2A.sÌêëḄeìB.ïðÌñḄìòC.s̺ᔲᙠÑî ÏÐD.sÌÏÐ"ᔲ◤⌕z{7. 2010•ÛÜ ᡠ!2ᵨõöᓱᱏᐜJúûK᠒ûᩈþḄÿ ᑮᓱᱏḄᓄᵨᩭA.ᔲ Ḅ⚣᳛ᨵᐵB.#ᔲᙠ%&'()C.#ᔲᙠ*+'()D.()ᔲ◤⌕./8. 2009•ᓭ2ᐵ3456ᑡ89:;<ḄA.%&:#(=>?ᳮḄA9BCḄB.DEFḄᗓH#IJK☢ḄMᯚ“PQ” 8ST#(⌴#VC.WᚪYᑮὁ[Ḅ\] 8S^_ᙠ&`'()D.ᙠ:abc'()defa9. 2008•឵hi2008j5ᨴ12B14.28ᑖ ᡃnopḕrpstu8.0vᱯᜧᙢ◫ T{|'n}~ ᜩdYᐵ3ᙢ◫Ḅᙢ◫Ḅ⚣᳛ᜧ1HZ 100HZᙠ()⌶' Ḅe⌲⊦ ⚣᳛⊦Cᔠᙠ6ᑡ89'⌱D┯¢Ḅ⚗A.5ᨴ12¤14.28ᑖ ឵hiᐰ§¨F©◫ªB.ᙢ◫. «¬DᜧḄ#VC.ᙠrp ®¯^_°ᙢ◫.DḄ ±E²³D.ᙠ´µrpE¶ḄᙢA ®¯^#ª·ᑮ ¸^#:ᑮ10. 2007•ᜩ¹ᐵ3Ḅ() 6ᑡ89;<ḄA.Ḅ()deº3Xl 8m/sB.Ḅ()^_»ᨵbc¼3⚓ᐳ114⚓
3C.Ḅ()de¿ÀbcḄ:a:aD.Ḅ()debcÁᐵÂÃeᨵᐵ11. 2011•Ä□¤ÆÇ'ᡃ¯ÈÉÆÊᑮËÌÍ.ÎÏᘂᑈD“Ò`” ÓÎÔÕ'ÖDḄ×Øᕜ§ᨵ“Ò`” ÛᡠÝ6☢Þßà“Ò`”Ḅá«;<ḄᨵA.ßàÒ`âãäᓄ45B.ßàÒ`âåᩭ&`'ḄÍæ`⍗èéᡂḄC.ÏᘂᑈDḄÒ`&`'ḄÍæ`⍗èéᡂḄD.×ØᕜḄÒ`×ØᓣìéᡂḄ12. 2013•iîᙠᡊn.ð ᡃnñò℉ôᦟö÷ஹùú÷ûüýᙠẆÿ ᡂḄᡠᵨ∑ᐝᙠᩈ ᐝ ᙠᜋ!"ᡂ᎔$Ḅ%ᑡ'()*Ḅ+,.A. ᡂ/'0ᐝ12 34B.ᩈḄ 5+ᙊ"ḄC.7ᢝ∑9ᜋḄ:;<=>ᩈᔣ☠AᜋḄBᔣCD∑ᙠᜋḄE=ᜧD.Gᙠᜋ"ᡂḄ+H13. 2013•JK.ᡠ+ᱥMABN᯿PQRᜮᡂTᳮVWAB1XᐝYZ[Rᜮ\ᑣᱥMA^ḄA'E1,.CD_4⚓,ᐳ114⚓.
414.,2012•h.0i“ᵨᡲlᜩnoᱥMpq”st\ᵨuv⁚xḄᜩnoqᱥMpq ᢣ┐☟|\ᢣᙠᑖ~lḄ~ ⌕ᜩnn⊝Ḽ,.A.ᔣB.ᔣC.ᜩnlḄṹD.ᔣCDṹ15.,2011•■¡¢.ᡠḄ+A,B¤¥ᱥpḄpqm§M¨VḄᐵ«ᵫ®A,B¤¥ᱥpḄ¯~PAPB9±Ḅ¯~P±²³Ḅᐵ«+,.A.pA>p*>pBB.pB>pA>p±C.pB>px>pAD.p*>pA>pB¸.¹⌱⚪,ᐳ3⚪.16.,2015•JK.ᵬ¿ÀÁÂÃÄÅÆÇÈ¿ÀÉ®ÊËÌÈ¿ÀÍÃÅÎᑮÌ¿ÄÐÑ ÓÔḄ:;§\³Ḅᐵ«ᡠÕ®,.A.¤¿Àᙠt=lOmin\P⍗_5⚓,ᐳ114⚓.
5B.P⍗ÝᵬḄÞ~+ÈḄ4ßC.P⍗ÌÈḄÞ~+TᩭḄ1.5ßD. ÓᵬḄnᙳÞ~+ÈḄ2ß17. 2013•âã.ᵬஹȤᱥMå¿ᙢ^¿\ᔣP¿Bᔣi2 çDᐸs-tᡠᵫ®,.A.¤ᱥMᙠ 10sᑁêiᒴÞçDìíᵬîíÈB.¤ᱥMᙠ15 20sᑁêiᒴÞçDìvᵬvÈC.¤ᱥMᙠ15sïP⍗ì0 15sᑁð ḄñÓPòD.¤ᱥMᙠ20sïP⍗ì0 20sᑁð ḄñÓPò18. 2013•☘ô.+“õö÷ᱥpᰚᓄ9úûüý”Ḅst%ᑡ'()*Ḅ+,.B.ᙠBCþᱥp<ᔾ C.ᱥᢝ5minD.ᱥḄ45࠷.⚪ᐳ9⚪19. 2013•ḝᱥᳮ ᱥ ᙠᓫ"#$ᑁ&Ḅ'()*+)*,-./01)*='/#$+ᓽ5=5ᱏ8 ᱥᳮ 9ᨵ;<=᪵?@ḄᱥᳮA+C*ஹEFஹG᳛ஹ IJ+=K?@ᱥᳮAḄLM(NOI?@MP ᱥᳮ Qᨵ;<=᪵?@ḄᱥᳮA+1 ᱥ ᙠᓫ"#$ᑁ)*ḄRᓄA(T)*U1)*ḄRᓄAᵨAv⊤X+YJZ[\)*]^_T)*ᵨ`aa⊤X+b▭ᓫ"m/s2ᵫT)*Ḅ?@ef1g6⚓ᐳ114⚓
61jklᱥ mnopḄ)*vo=2m/s,w5s\YḄ)*R0vt=6m/s,ᑣ=lᱥ ᙠ5sᑁḄ)*RᓄAAv=m/s»2j~⚪1 Ḅᱥ NᒴT)opᓫ"#$ᑁ)*ḄTAJ+ᱥ ḄT)*ᜧa=m/s2«3T)*Ḅ?@./a=4ᒴ)opḄv-tᵬᡠX+ ▢ᑖ☢⊤X)*vᒴ)opḄᱥ +op#$0t#&Ḅ's_ᒴT)opḄv-tᡠX,ᐸ ▢ᑖ☢⊤XNᒴT)opᱥ +)*ᵫvoᑮ”+op#$0t#&Ḅ'sᵨvoஹtஹaᑏsḄ⊤/+s=o20.2012•□kᑡᒴ)¡¢Ḅᑡ£+ᨵk⁚¥02.5mḄ£¦§ᚖZᑡ£opLᔣªᩭḄk⚩1000m/ḄP)®¯°±+ᙠ£¦²³ᶇµḄ¯¶·ᑡ£[¸LᔣḄ¹º0S10cm,ᑣᑡ£Ḅ)*021.2013•¼½ᵬ“¿À ᰚᓄ#Â*ḄRᓄÃÄ”ḄÅÆÇÈ1 ÉÊËÌᙠÍε+ÏÐÑÒÓᙠÔ T +0Õ Ö×Ø ⌱“ᙳᒴ”ᡈ“Üᙳᒴ”2ÐÂ*,ÝᐭÑÒ #+Â*,Ḅßᴻá⌕ᐰÝᐭ Ö× +Ü⌕äᑮÑÒåᡈojæ#çÂ*,ḄXᦪᡠX+ᑣé#Â*,Ḅêᦪ03µ⊤ÅÆ ëìḄᦪíg7⚓ᐳ114⚓
7#$012345678910/minÂ*4042444648484848485053/࠷᪷í⊤ ᦪíef+ᱥḄᰚ࠷ᱥ⌱“ᨔ ”ᡈ“÷;ᨔ ”4øùûü ᰚᓄ#Â*RᓄÃÄḄýab Ḅ22.2013•ÿᜮᵨḄᐸḄᐵaᡠ , ᐸᩩ"#$%1'(Ḅ)%2'(ᜧ,☢ᜧ./0)%32(Ḅ34,☢ᜧ./0ᑣ789:Ḅᐵᑖ<=>_______ஹஹ%⌱C23.%2013•GHὁJKL“N”P⁚RST4UV4ᬰ=XYZ[\ᔛḄ^_ḄN`ᐶbLXYcde^_fghijdḄN%1kᡲmᜩopᙠr☢sk᪗usḄvṹxᑮz{ᜐ}~ᢣ┐ᔣᑖmḄᵬᡠ >ko⊝ᔣ%⌱C“”ᡈ“”⁚,ᑮᢣ┐ᢣᔣᑖmḄ%24ᬰᵨᜩoj^_ḄmḄṹV᪗usḄvṹᡠ ᑣ^8⚓%ᐳ114⚓
8_Ḅg, 4ᬰk^_ᙠjḄ230cm3,ᑣ^_ḄNkg/m3(3)¦4ᬰ§¨©ᐜk^_ᙠjd^_Ḅᵨᜩojd^_ḄᑣP᪵jḄ^_N¬¨®_______(⌱C“ᜧ”ᡈ“4”)ᐸ¯°(4)¨©²ᡂT4U´4ᬰµjd^_Ḅ¶4ᬰk^_·¸¹º»d4¼½ஹ¾ஹ¿½VᱛÁÂ4ᬰᐜk¿½ÃÄÅḼ4ᬰḄ§iÇ(5)4UᙠÉὃ4ᬰḄ§iËÌᙠ#ÍÎᜐÏÐ#ÍÎᜐÇ24.(2013•ÑÒÓ)40ᵨjÔÕÂᘤᩞjᙽÙᮞÙḄNÛkÜ☢¨©ÝÞḄᦪà⊡ᐙ²(g=10N/kg)(1)ᵬᡠ ᵨjÔÕjdæÙᮞÙᙠç.ḄGÔG=2.5N)(2)kæÙᮞÙᙠ☟êᡠ jÔÕḄ ᦪF=N)(3)᪷àíîïð¯ᳮòódæÙᮞÙḄV=nA(4)᪷àN÷øódæÙᮞÙḄNp=kg/m\ᵬ25.(2013•GH)ᙠûᱥᳮᐶb4ýḄþÿ ᜓᵨஹஹஹᔾஹஹᩭᩈᙽ( ᔾ)Ḅ!"(1)ᙠ&'Ḅ)ᑁ+,ᑮ.Ḅ+/ᜧḄ,12/o5ᵨ67ᐜ9:ᢣ┐=ᔲᙠḄ?@A ᙠB?@7CDEGHI5ᵨ(2)L(ᵬ)ᡠOᵨPᩈᙽᙠQR ḄSTNo(3)WḄXY'ᙠᔾḄᢞ[\ᢴPᔾᑁ^ḄQRᔾᙠ______Ḅ`ᵨabccdᙠe^L(f)ᡠOᙠ ᎔ᐭ〉ḄWᩈᙽjᐭ GᵨWᩈᙽᐰ^+ᐭ L(l)ᡠOB.OᦪT0.4N(4)q ᥅stuSL(l)ᡠOḄᙽvᑮḄwTN,ᩈᙽḄ!"y9⚓(ᐳ114⚓)
9Tkg/n? 5qW Ḅᣚᡂ~&ᵨWᩈᙽᐰ^+ᐭ .OᦪT0.2N,Ḅ!"Tkg/m\6q ᐜᵨWᩈᙽᐰ^+ᐭ ᯠGPᩈᙽᩈᙽḄS,ᳮ\ᑖ᪆ᢥ᪵ḄḄᩈᙽ!"⌱“ᜧ”ஹ“”ᡈ“ ”26. 2011•LᡠOT¡¢\£¤¥ᵨEt¦Ḅ^ᑖ᪗¨᪷ª¦᪗¨\Ḅᦪª,¬P¦Ḅ®=kg¯°p¦=0.92XIfPkg/nP±qEt¦ᵨ²&³ᒕµ³Et¦Ḅ!"Tkg/m3±qᵨB¦¶·ᑣ¹®º¶·¦.»kg27. 2011•¼½ᙠᵨᡲᜩÀÁÂḄ®.ÃÁÂjᑮᜩÀÄᔣÆ ÇÈÉṹËÈ\ᨬÉṹGÍÎᢣ┐ᨬÏ☟ÑᙠLᡠOḄ?@ᑣa²ḄÒ`7=ᨬGᜩÀÀ⊝.Æ ᡠÈḄÉṹtÔṹḄ?@LᡠOᑣÁÂḄ®=____goy10⚓ᐳ114⚓
10Õ.`L⚪ᐳ6⚪28. 2016•ØLᡠO᪥ÚÛÜÝḄᜋ\¶ᨵÀ☢áâãäåᳮæçè\é¬ᑭᵨᐝḄìíîÚ⍝CD᯿ñòᙠL óôPõSÍPḄᐝöÀ☢áìíGᑮ÷AøḄᐝùL29. 2014•ᜩAஹBT&ÍᐝøSÍPḄᐝöÀ☢áMNìíGḄúᩩìíᐝ,LᡠOüýPúᩩìíᐝḄᐭíᐝþó'ÍᐝøḄ?@30. 2013•ØLᡠO&ÿᐝᑮ☢ᐝᢚᐝḄᜧ 31. 2013•ᡠᩩᐭᐝ ᡈ!ᑖ#$%&'Ḅᐝ(Oᯖ*F,ᑖ#+$%&'ᢚ,Ḅᐝ.11⚓ ᐳ114⚓
1132. 2013•₹3ᡠ45ᐝᔣ7&'+ᢚ,ᢚᐝᑮ489☢':ᙠᔣ7&'<5ᐭᐝ+9☢'Ḅᐝ=>᪗@ḄAᦪ33. 2012•⃩DᡠMNE7&'ḄFᐝGABE∑IA'B'E∑IᡠᡂḄK,ᵨNOPQ7&'R48ᯖ*FḄST>UVW4sX.Z[\]⚪ ᐳ1_⚪34. 2013•`a_bᵨↈdᐙ,ᑴᡂ&'ghiᳫḄᨔlmᩭopqriஹtuivuiḄᯖwᜧ_Z[xyᵬᯖwE10cm,{Uᵬᑖ#ᢴ}ᡂ~ஹḄl>ᑖ#xᯖwᡠ 1xyᯖw_10cmḄ,ghtuiḄ 2ᙠ4STᵨᵬஹ~ஹ&'ᑖ#ḼvᜐḄ4ᱥmᐝyᑮᨎḄK,ᐸKwpᜧḄ 3tuὅᡚ◚i'ᩭqu◚i'4ᙠ@d⊤☢Ḅↈ'ᱏ¡¢Ḽiᳫ£ᐸ(¤A¥ᨵ0.05mm,ᑣ¨'ᱏḄ©ª¤A0.05mm ⌱¬“_”ஹ“¯”ᡈ“ᜧ”¨'ᱏᐝᨵNᵨ ⌱¬“°±”ᡈ“²ᦣ”´.µ¶⚪ ᐳ16_⚪35. 2013•·¸¹ºᔿ$¼½¾º¿²ÀὡḄÂÃ_bÄ\]¾Å²ÂÃḄ⚣᳛È!AஹÉḄᐵËÌ⌱ÍÎᩞᧇȾѤAÒÓ!AÉÒÔḄÕ᪷¾,UVWᵨ×ØᢞÛ,xᔜݲÂÃḄ⚣᳛ᦪÞß⊤àáâ!A/cmÉ/cm⚣᳛/Hz.12⚓ ᐳ114⚓
121—1.502131231.002.001284348.502.50656 1ᵨãAäx1â¾!Aᡠåᦪ<2Õ᪷¾ÃçᨬéḄâ 3᪷Þ⊤ᦪÞêᔲy“¾Å²ḄÂÃḄ⚣᳛¢!AஹÉḄìᜧÒ°í_”ḄîïðñbòḄᳮᵫ¶à ê/Ôêöᳮᵫà4_b²÷ØᢞḄ¼½¾²ÂÃøᙠùᨵúûḄýE¼½¾²ḄÂÃᵫᡠþÿḄ--ᓫḄᩭḄ⌕ᑏᫀᑨᫀᑨO36. 2010• ▅!☢Ḅ#ᦻ%‷Ḅ“ὡ)”-------+ᕊ%‷ᨬᜧḄᱯ012Ḅ◚4ឋ6ᡊ8◤⌕:8;ᙠ=!%>?@AB2CDE=☢FᵨHIJKLMDN☠+ᕊPQRSᡠU+ᕊᙠ%‷VḄW⌕ឋXYZ[\Y%‷Ḅ“ὡ)”+ᕊ1ᑭᵨ=^+_`=!)᪗PQRSஹBcdeḄᵯgᜓ1=+i^jᵨklḄmnW⌕op+ᕊDqᔣ=^st+_+_Ḅ⚣᳛ᜧwᙠ10kHz 30kHzx;ᵫz?n+_Ḅ⚣᳛{|}U~ᡂ{ᢣᔣឋ+_ᙠ=^8.⍗ᑮ%‷ஹ=Hஹ)᪗@[tᩭtᩭḄ+_[+ᕊᦈ᪷+e8;}UB)᪗Ḅ+ᕊs+_ᑮḄ)᪗1ḄtᩭḄ+_!\“+” Ḅ@ᨵᡠᓄ2Ḅᓄ¡¢1+Ḅ|£)᪗¤ᔣ+ᕊ☠¥+Ḅ¦13⚓ᐳ114⚓
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19A.28.33¥/§B.13.60¥/§C.14.78¥/§D.14.17¥/§ூὃ!69®¯°ᐸdᵨ.ூᑖ᪆᪷®¯²=¨e$´µ[¶«4}(·⍗Ḅᙢ!A«º}(t·⍗Ḅᙢ!B6ḄSABµ»ᑮ` ᡠᵨḄ563¼µ»ᑮ½¾Ḅூ;<;$ᵫe$«4}¿vÀw~ᑮ(·⍗Ḅᙢ!A,Á Ḅ56£ti=2•Âᐲ=016s,2Vv=-§-,tº Ḅ£sI—V*ti=340m/sX0.16s=54.4msiS«º}¿vÀw~ᑮ(·⍗Ḅᙢ!B,Á Ḅ56£t2=2%_=0.12s,2 Ḅ£sÄ2=v^*12=340111/8X0.12s=40.8m,ᡠOAB6Ḅ£SAB=Sτ-s2=54.4m-40.8m=13.6masvÀw~Ḅ|}6◞56£1s,¨vÀw«4}~Æ£05Ç3ᑣ«4}¿vÀw~ᑮ(·⍗Ḅᙢ!A,Á Ḅ56£0.16s«º}~Ḅ56£1sÈ3«º}(·⍗ᙠB!Ḅ5Çd/ls+0.12s=lÉ2s,¿A!ᑮB!½¾Ḅ56/t=1.12s-0.16s=0.96s,ᡠO½¾Ḅ£²=¨=1Ê61n=i4.17m/st0.96sᦑ⌱$Dூ!_`⚪ὃËḄ/Ḅdᵨ3ÌÍÎⅾÐḄÑ3Z[ÒÓᨵᵨÑ3/;Õ`Ö×⚪ḄᐵÙ3. 2013•PÚqᵬஹ|ᑖÛ¿PஹQ|!Ü5Üᔣ&'3ÞßḄs-tÎaஹ bᡠ3Á 6§ᵬஹ·⍗ᵬஹḄᑖÛ£vᵬஹzuPஹQ6Ḅ£s,«20⚓kᐳ114⚓q
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21B.ὅᵨ8s 23480m C.ὅḄ568m/sD.ὅḄ568m/sூὃ96A;56Ḅ<=.ூᑖ᪆⚪Ḅᐵᳮs-t $"#ABCDḄBE FG Hὅ8sI480mḄJK ὅᵨ46sLMN480mḄJK Oᔠ56PQR56ூS;AஹHὅUὅVBE42s,FWᔠ⚪X;Bஹὅᵨ6s 23480m FWᔠ⚪XYCஹὅḄ56v=_§_&=8m/s,Wᔠ⚪XYt10DஹὅḄ56v=Z=i2_=13.3m/s,FWᔠ⚪XYt6ᦑ⌱;Coூ9^ᑭᵨs-tᑖ᪆ᜐᳮ56a⚪ #ὃḄb9 ⌕Oᔠ56PQNHᑖ᪆5. 2012•defᑡᐵhijḄkl#mnḄ,A.ᑗEiḄᱥqrᙠtuB.ivᙠFGwx#Ḅyz56{GC.ivᙠ|}#Ḅyz56~340m/sD.Pd◞v~4ᙠiᜐiூὃ991;ivḄY92;ivḄyzᩩY94;ivᙠFGwx#Ḅyz56Y9L;■iḄ⌶.ூᑖ᪆⚪◤⌕;⚪Ḅᐵ⌕⍝ivᵫᱥqḄtuḄ ivḄyz◤⌕wxḄ .22⚓,ᐳ114⚓
22ᙠq#yz ᙠqq#yz F$ᙠ|}#yzY■i"iḄஹiḄyziḄᦈ¢£¤⁚NH■ூS;AஹEiḄᱥqrᵫᱥqḄtuḄ klmn Wᔠ⚪XYBஹivᙠq#Ḅyz56ᨬ© ᙠq#Ḅyz56ᨬ᠒ kl┯¬ FWᔠ⚪XYCஹivF$ᙠ|}#yz kl┯¬ FWᔠ⚪XYDஹP¯d◞vᙠivḄyz⌶#i FWᔠ⚪X;ᦑ⌱;Aoூ9^±a⚪⌕OᔠivḄyz¯²☢ᑖ᪆S6.,2011•¸¹ᡠ» ¼½¾¿mᙠEiḄvÀÁ☢Âᨵ◫Å¢ÆÇᵨᩭÉÊ,A.ivḄËÌB.ÍvÎḄÌÏC.iv$ᔲᙠ}#yzD.ivyzᔲ◤⌕ ூὃ991;ivḄ.ூᑖ᪆ivᵫhEiqḄtuḄ Ḅyz◤⌕☠wx qஹqqryzivூS;ÓᵨmᙠEiḄvÀÁ☢ ÅÔᑮᨵtu ᡠÆÇÖÉÊivḄËÌ ᡠ⌱⚗AmnYᦑ⌱;A«ூ9^⍝ivḄËÌS⚪Ḅᐵ ÙhÚẠ⚪7.,2010•¸¹ᡠ» ᵨÝÞᓱᱏᐜâ©ã᠒ãᩈåḄæ çᑮᓱᱏḄivE ᓄ¢ÆÇᵨᩭÉÊ,A.vÎᔲituḄ⚣᳛ᨵᐵB.iv$ᔲᙠ|}#yzC.iv$ᔲᙠq#yz.23⚓,ᐳ114⚓
23D.ivyzᔲ◤⌕ ூὃ99D⚣᳛vÎḄᐵê.ூᑖ᪆±a⚪⌕OᔠvÎḄÍëNHᑖ᪆S⍝vÎEiqḄtu⚣᳛ᨵᐵᱥᳮì#íivḄîïð~vÎ vÎḄîïEiqḄtu©᠒ᨵᐵ ᱥqtuñ© vÎLñîூS;vÎḄîïEiqḄtu©᠒ᨵᐵ ᱥqtuñ© vÎLñî ᡠÓᵨÝÞòᱏ óᙠᩈåæôᑜ3 ö©÷ ö᠒÷ ̯öᓱᱏḄtu©᠒FG ᡠ¯öᡠçᑮḄivḄvÎFGYᦑ⌱;Aூ9^⚪ø⌕ὃù4ivḄ¯⌕Ïú6v⁐Ḅüý¢¯ÌÏþÿ᧕⌕8. 2009•ᓭᐵᑡḄ A. !"#$%&'ᳮḄ)*+ḄB.,-./0Ḅᗓ2345☢Ḅ7ᯚ“:;”=>!⌴@C.AᚪCDᑮὁGḄHI=0JKᙠ MN!OD.0ᙠPQRN!OSTUPூὃX920Ḅ!Oᩩ[\940ᙠPQRNḄ!OST\9N&@.ூᑖ᪆1 !"#'ᳮ`⍝Ḅ\20ᐹᨵ@\30dᙠ MN!OᙠPQRNḄ!OSTPூefegAஹ$%ijkl⌼ npq !Ḅrstu"#$%&'ᳮḄ)*+Ḅ\Bஹpv0ᐹᨵ@ᗓ2,-Ḅ./0Ḅ@JK345☢Ḅ7ᯚ“:;”;CஹAᚪCὁGḄHI"# M!ᑮxyὡᩏḄ\Dஹ┯}0ᙠPQRN!OSTP\ᦑ⌱gDூXq⚪⌕ὃ0!OḄᩩ[STK0ᐹᨵ@Ạ`9. 2008•឵20085ᨴ12B1428ᑖᡃḕ,y8.0ᱯᜧᙢ◫>¡¢N£¤¥,y¦ᜩ¨©SCª«¬tᐵᙢ◫Ḅ`gᙢ◫Ḅ⚣᳛±ᜧ²1HZ 100HZᙠ!O⌶NḄ´T⌲¶⊦¸¹º⚣᳛»¼⊦¸½24⚓ ᐳ114⚓
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26B.ᩈÅÆḄº»¡ᙊḄC.Úᢝ∑À8ᜋḄÜÝÞ_ßᩈÅᔣ☠âᜋḄãᔣäå_∑ÀᙠᜋÆḄ¼PᜧD.∑ÀᙠᜋÆᡂḄ¼ç¼ூὃ(A2$ᐝᙠᙳᒴÖÊ45.ூᑖ᪆º»ᡂ¼êë_ᵫᐝḄÖÊ45ᡂḄ_ᡂ¼Ḅìc,íᱥîḄì8º»Ḅìïᨵᐵð_ñòᡠᡂḄ¼᎔ÏḄê¼_ᡂ¼Ḅᜧºó¼ᑮº»Ḅôõஹᱥᑮº»Ḅôõᨵᐵூ+A+$Aஹº»ᡂ¼ᵫᐝḄÕÖÊ45ᡂḄ_ö⌱⚗ÑÒtuBஹº»ᡂ¼ᡂḄᱥîḄ¼_óº»Ḅì÷ᐵ_ö⌱⚗ÑÒÞtuCஹÚᢝ∑À8ᜋḄÜÝÞ_ßᩈÅᔣ☠âᜋḄãᔣäå_;ᡂ¼Ḅᜧºc,í¼ᑮº»Ḅôõ_ᑣᩈÅóº»ôõùº_¼hùº_ö⌱⚗ÑÒÞtuDஹ∑ÀᙠᜋÆᡂḄ¼᎔ÏḄê¼_ö⌱⚗ÑÒÞtuᦑ⌱$Aூ()1ᱥîÉ[ᡈûüḄᐝýº»þ_ᙠº»þ☢Ḅᐝÿ ᡂ᎔Ḅᡂ 2ᙠᡂᱥᡂḄḄᵫᱥḄᱥḄ Ḅ ᐵ13. 2013•!"#%ᡠ'ᱥAB᯿)*ᜮᡂ,ᳮ'.%/AB01ᐝ345*ᜮ6ᑣᱥ A8ḄA'90:#<=C.>?ᔣAD.>?ᔣKூὃ8B8EFG*ᡂḄHᵨ.ூᑖ᪆NOFG*ᡂḄPQ᪷SFG*ᡂ6⍳UᱥV4WᜧḄYZᐝ[Ḅᐝ\]^_ᔣ`WḄᱯ8bcᑖ᪆ூdedE/AB01ᐝ345*ᜮ6ᱥfWᜧg6fHhiᡂḄjik27⚓:ᐳ114⚓#
27ᵫ%n?co1ᐝ3Ḅᐝ\ZFG*pqrsZᯖ8u9vᑮ8ᡠx90AFḄ_ᔣ<=ᦑ⌱EB,ூ8g⚪ᨵᐵFG*ᡂPQḄ⌕NOFG*ᡂḄᱯ8ᱥffḄᐵdg⚪ḄᐵᳮdFG*ᡂḄ,14.:2012•#“ᵨᡲᜩ?ᱥ”6ᵨ⁚Ḅᜩ?ᱥᢣ┐☟¡6ᢣᙠᑖ¢Ḅ£¤¢\K¥⌕¦ᜩ??⊝¨©ḼHh:#A.«¬A®¯°ᔣA±²³´B.«¬A®¯°ᔣK±b³´C.«ᜩ?AḄ¶ṹi¸³´D.ᔣA<=ºṹூὃ826Eᜩ?Ḅ¦ᵨ.ூᑖ᪆ᜩ?ᙠ¦ᵨZ¼ᨵ½¾⁚ᜩ??⊝E³6¿⁚ᜩ??⊝ÀÁZ¼⁚ᜩ??⊝¿⁚ᜩ??⊝◤⁚?⊝¯°ÃÁZ¼⁚ᜩ??⊝◤Äi¶ṹᡈ<=ºṹூdedEᵨÆ⁚Ḅᜩ?ᱥᢣ┐ᢣᙠᑖ¢£¤¢\ḄKdz8ÈKÇᱥÉᑣHᔣAÊĶṹᡈᔣA<=ºṹᔣA<=ºṹ/oAËÄÌ•³¾ÍḄ¶ṹÎ.ᵨ⁚Ḅᜩ?ᱥ6`Ï⁚?⊝¯°ᦑAஹBஹC┯ÒDÓÔᦑ⌱EDூ8⌕dÕÖ×Ḅ⚪Ø✌ᐜ⌕Ûᜩ?Ḅ¦ᵨᨵ³¾ḄÝÞE¦ᵨPᑣஹÎ.ß⚗áâ⌕ὃ⇋ᑮ15.:2011•■æç#%ᡠ'ḄA,B½ÕᱥḄméVḄᐵ%ᵫ%ënA,B½ÕᱥḄì¢PAPBî>Ḅì¢P>ïðḄᐵ:#k28⚓:ᐳ114⚓#
28A.PA>P4;>PBB.PB>PA>P>C.PB>PK>PAD.p^>pA>pB?ூὃ829Eì¢Ḅᜧõö.÷ᑖ᪆ᑖ᪆%ᡠ'ḄA,B½ÕᱥḄméVḄᐵ%/év=20cm36AḄ30gBḄ5goᑭᵨì¢ÿ ᓽூᑖ᪆ᡠḄA,BᱥḄm VḄᐵ!"#$ v=20cn?,AḄ30g/BḄ5g,ᵫpF4pᵬ=6=7^=1.58/=3>?@/vAv20cm3@PC=-=—^y=0.25g/cm329ூAஹᵫ"4#¬Å⊤,#Å⊤ºL#ᙠlOmine|d⍗,ᦑAǪBஹᵫ"4#ᵬe|lOminÈKḄºLÉ3km,d⍗ᵬḄhÊᵬ=*_=⌾_tlOmin=O.3km/minCe|lOminÈKḄºLÉ1km,d⍗CḄhvC=r=Ò?=0.1km/min,tlOminvᵬ=3vC#ᦑB┯Ô//Cஹᵫ"4#d⍗C15min-10min=5minÈKḄºLÉ1km,hvC'=——tC=1km_o.2km/min,5minvC'=2vC#ᦑC┯Ô/Dஹᵫ"4#iKL#ᵬÈKḄÖºLÉ4km,Ö,É15min,ᵬḄᙳhÉV*4km15minCÈKḄÖºLÉ2km,Ö,É15min,CḄᙳhÉvC=2kmÊᵬ=2vC,15ininᦑDǪᦑ⌱ADoூWXY⚪ὃØh¡ ¢ᐸ¤ᵨ#e,ὃØ|¨¤ᵨ"ᩭᑖ᪆ÙᱥᳮÚ⚪ḄÛÜÝÞ⚪pḄᐵßàá"#Û¶"«âãdᐵä17. 2013•åæwᵬஹCᱥ ¶eçᙢWe,ᔣde`ᔣêëìíî#ᐸs-t"ᡠ#ᵫ"4twA.ᱥ ᙠ0 10sᑁðêᒴíî#òvᵬóÊCB.ᱥ ᙠ15 20sᑁðêᒴíî#òvᵬvKC.ᱥ ᙠ15sôd⍗#ò0 15sᑁõKḄºLdöD.ᱥ ᙠ20sôd⍗#ò0 20sᑁõKḄºLdöூὃW68h ᱥ íî.ூᑖ᪆1ᙠs-t"«#çᩩøì⊤ᱥ êḄᒴëìíî#᪷"àúᵬÃ30⚓tᐳ114⚓w
30Cᱥ ᙠde,ᑁõKḄºL#ᓽûüúᱥ Ḅíîh/ 2ᙠs-t"«#ý,ÅḄìþ⊤ᱥ ᜐ ☟ 3ᵫᱥᙠ0 15sᑁḄᙠ ⍗ 4᪷!0 20sᑁḄ"ᔲூ%&%(Aஹᵫᱥᙠ0 10sᑁḄ"*ᩩ,-⊤/ᱥ0Ḅ"ᒴ23-45ᙠ6 7ᑁᵬᱥḄᜧ :ᱥḄᡠvᵬுV”ᦑA>?Bஹᵬᱥᙠ15 20sᑁḄ"*ᩩ@ 7ABCḄ3-ᡠᵬᱥᜐ ☟ᦑB┯FCஹᵫᱥᙠ15sG⍗0 15sᑁḄH"100m,ᦑC>?Dஹᵫᱥᙠ15sG⍗I"ᙠ20sG⍗0 20sᑁ:Ḅᜧ ᵬᦑD┯Fᦑ⌱(ACூKLM⚪ὃPQᵫs-tRSᱥḄ2TᜧUஹᑨWᱥḄXYᐵ[ᑁ\ᵫᑨWᱥḄ45ឋ^ஹ_ᱥḄ`ᡠabḄ 7"%⚪Ḅᐵc18. 2013•☘fg"“jklᱥ^ᰚᓄ@opqr”Ḅtuvᑡxy>?Ḅ"zgA.ᙠt,i=5min |ᱥ^ᜐ p}ᐳnB.ᙠBC|ᱥ^IᔾC.|ᱥ^opᢝQ5minD.|ᱥ^ḄopK"45࠷ூὃK1Cᰚᓄ@opḄT* 7.ூᑖ᪆1ᰚᓄḄᙶ᪗⊤/ 7ᙶ᪗⊤/TBCTIḄ▤"ᰚᓄ31⚓zᐳ114⚓g
31 2ᨔᙠᰚᓄᡈop ḄT"ᰚKᡈopKᨔᙠᰚᓄᡈopᜐ p}ᐳᰚᓄᑮᐰᰚᓄᡠᵨ 7"ᱥᓄᔊḄ 7ூ%&%(Aஹᨵ* 7ᔾTIᡠ|ᱥ^"ᨔ3minᰚᓄᑮ6min¡ᦑᙠt =5min |ᱥ^ᜐ p}ᐳᦑA>?BஹᙠBC|ᱥ^IWᔾ£TIᦑB┯FCஹ|ᱥ^12minopᑮ15minop¡|ᱥ^opᢝQ3minᦑC┯FDஹ|ᱥ^ḄopabḄT"45࠷,opK¥45࠷,ᦑD>?ᦑ⌱(ADூKLM⚪ὃPḄ"aᰚᓄ@opḄᳮ%᪷ᑖ§ᨔ@¨ᨔ©ªᑖ᪆ᔜ¬ᙠᰚᓄḄᱯK"%®|⚪Ḅᐵcὃa¯°±²KḄ⌕´"RSµḄ¶.·¸⚪zᐳ9U⚪g19. 2013•ḝºgᱥᳮ»¼ᱥᙠᓫX 7ᑁḄ¾2T2T¿ÀÁÂ¥(2T=/ 7ᓽÅ=$/£ÈᱥᳮÉᨵÊ˯᪵ÍÎḄᱥᳮÏÐTஹÑÒஹÓ᳛ஹÕ¯ÖÍÎᱥᳮÏḄ×y¾0RÕÍÎyµᱥᳮØᨵÊ˯᪵ÍÎḄᱥᳮÏ(¼ᱥᙠᓫX 7ᑁ2TḄᓄϾÙ2TzÚ(2TḄᓄÏᵨ⊤/Û ÜÝ2TÞßÙ2Tᵨàáa⊤/â▭ᓫX"m/s2ᵫÙ2TḄÍα(z1gä*°ᱥ45Ḅ2Tvo=2m/s,5sÝÛḄ2T¥vt=6m/s,ᑣ¯°ᱥᙠ5sᑁḄ2TᓄÏæv=çm/s 2äè⚪z1Ḅᱥ0ᒴÙ23-45zᓫX 7ᑁ2TḄéÙÏg´ᱥḄÙ2TᜧUa=0,8m/s2, 3Ù2TḄÍÎÁÂa="At 4ᒴ23-45Ḅv-tzᵬgᡠ/▢ëìᑖ☢î⊤/2Tvᒴ23-45Ḅᱥ45 7¥t ḄsᒴÙ23-45Ḅv-tz:gᡠ/,32⚓zᐳ114⚓g
32ᐸ▢ëìᑖ☢î⊤/0ᒴÙ23-45ᱥ2TᵫV0ᑮV”45 7¥t ḄsᵨvoஹtஹaᑏsḄ⊤ùÂs=ypt+Aat2»2ூὃ69ᐸᵨ.ூᑖ᪆1Ḅ ᓄ 2ᙠᓫ$%&ᑁḄ ᓄ ()*᪷,)Ḅ-./0ᓽ23᪷,)Ḅ-.ᑏ0⊤64᪷,89:▢<=ᑖḄ☢?*ᑖ@ᵨvoஹtஹa⊤F0ᓽ2ூHIH1ᱥKᙠ5sᑁḄ ᓄ 4N=N1-vo=6m/s-2m/s=4m/s2ᱥKḄ)ᜧUa=AE=^”=0.8m/s2t5s3᪷,)Ḅ-.2\*)Ḅ-.a=A_At498:▢<=ᑖḄ☢?^_`abḄ☢?cdebḄ☢?c*ᓽ$=N01+^^22ᦑIᫀj1420.83A_4vt+lat2o0At2ூlm⚪o⍝qr:\sḄᱥᳮ⚪*uv⍝⚪ᡃx2y᪷,⚪:ᡠ{Ḅ|}~ᔠᡃxᨵḄacᱥᳮ\sᡂHIḄv⍝⚪⌕ὃ\sḄஹᑖ᪆*o⍝⚪20.2012•□oᑡᒴḄᑡ*ᨵo⁚j2.5mḄᚖ_ᑡaᔣ¢ᩭḄo⚩1000m/sḄr¥¦§¨*ᙠ©ªᶇ¬Ḅ¦®ᑡ¯°aᔣḄ±²j10cm,ᑣᑡḄj40m/sூὃ6AḄ¶·.ூᑖ᪆᪷,⚪¸¹0F¸9*A⊤Fº§¨%Ḅ»oª$¼*B¾⊤¥¦Ḅ¿$¼*C¾⊤¥¦§¨»oªḄ$¼᪷,1=Á*ᐜ/0¥¦ᙠ©ªvÃᶇ¬Ḅ©Ä¦%Ḅ%&¥¦§:»oªÅᨵtAC=tBCÆ᪷,/0ᑡḄூHIH᪷,⚪¸¹0F¸9*Ç33⚓ᐳ114⚓
33N=?10cm——►rI-----------------X~c----III!2.5mOfv=1000in/sBA⊤F¥¦§¨%Ḅ»oªᡠᙠ$¼*B¾⊤¥¦Ḅ¿$¼*C¾⊤¥¦§¨»oªᡠᙠḄ$¼¥¦§:»oªÅᨵtBC=tACo¥¦ᙠ©ªÃᶇ¬Ḅ©Ä¦%Ḅ%&tBc=~^~=2.5m=2.5X]"3svlOOOm/sBᑡḄVÐ=JAC.=.SA£=----11n-------=40m/sÒtACtBC2.5X10-3sᦑIᫀj40m/s»ூlÔ⚪⌕ὃᐸᵨḄᳮHcÕÖHIÔ⚪Ḅᐵا:%*10cmḄ%&c¥¦2.5mḄ%&Ù^ÔÚÛjÜᩖḄÞ⚪*2yßà¹9áÞ⚪âᓄ*ãᓫᓄ21.2013•äå9ᵬ“éêëKᰚᓄ%íḄ ᓄîï”Ḅðñò¼1áóôõöᙠ÷ø¬*~ùúûüᙠý:)þ*jÿ ⌱“ᙳᒴ”ᡈ“ᙳᒴ2ᐭ Ḅ ᴻ⌕ᐰ#ᐭ ⌕$ᑮ&ᡈ')*+Ḅ,ᦪ/0ᡠ, ᑣ3Ḅ4ᦪ546°C;34⚓ᐳ114⚓
343>⊤@ABCDḄᦪEF012345678910/min4042444648484848485053/࠷᪷E⊤ᦪEJK LᱥNḄᰚP@48'CQLᱥN@ᨔ⌱“ᨔ”ᡈ“Sᨔ”4TUWXᰚᓄZᓄ[\Ḅ@/]abḄaூὃP1FQᰚᓄabḄcdAB.ூᑖ᪆1cdᰚᓄḄZᓄ[\AB hijkᵨmno ᱥḄZᓄpqᙳᒴ rsZᓄpq᠒ uvCDAB2ᙠ ᵨ ᴻ⌕xyzᱥᐙᑖ|}ᙠ~4ᦪ ⌕ᐸᑖ 3ᨔaSᨔᙠᰚᓄḄQᨔᙠᰚᓄ ZSᨔᙠᰚᓄWᓣᑖ᪆ᨔḄᰚᓄ/K⍝ᨔᰚᓄḄ5ᰚP4/ᑨᨔxSᨔ P@ᔲᨵhFᱥNᔾ ᓣ 3ᱥNᑮ¡ᰚP ¢ᙠᰚᓄூ£¤£Q1¥ᨵḄ¦ᐭm§ @mno kᵨmno ᱥḄZᓄpqᙳᒴ rsZᓄpq᠒ uvCDAB2ᵨz¨Ḅ Ḅ ᴻ⌕ᐰ#©ᐭ ⌕$ᑮ&ᡈ'ᵫ/K Ḅᑖ5ᡠ«ᐸ,ᦪ546࠷ 3ᵫ/K LᱥNᙠᰚᓄ ¬ᢝ48cZ ᡠ«LᱥN5ᨔrsᰚP5484pq/]ḄaabJK aᱥNᨵhFᔾᓣ ®bᱥN¯ᔾஹ¯ᓣ a@ᨔ ᦑTUWXᰚᓄZᓄ[\Ḅ@/]Ḅaᦑ¤ᫀ5Q1ᙳᒴ2'46 348ᨔ4aூP³3⚪cdµᱥNᙠᰚᓄḄZᓄᱯP ·⌕ὃ¸¡¹º»Ḅ;35⚓ᐳ114⚓
35 ᵨa4ᦪµὃ¸¡ᨵᐵᨔaSᨔᙠᰚᓄḄ3AB½ὃ¸¡¾᪵ ᱥNᙳᒴ ÀABḄhÁÂ⁚Ä@µ¹ÅÆLḄÇ⚪22. 2013•ÉᜮᵨµhËÌhÍN¨Ḅm§ ᐸxFḄᐵÎ//Ïaᡠ,,)ᐸÑᩩÓZ 1ÔÕ§mḄN¨ 2ÔÕᜧ×☢ᜧÙÚÛQ3ÜÕ§mḄN¨ µÝÞ×☢ᜧÙÚÛᑣßàá xFḄᐵÎ/Ïᑖ»Æcஹbஹd⌱/“a”ஹ“b”ஹ"c”ᡈ"d”|7?rb0//sூὃPIIQâãäâãᩩÓ1JQâPäâPxÙÚḄᐵÎ.ூᑖ᪆1)ÔÕ§mḄN¨ ᑣmḄâPZ §F§å 2)ÔÕᜧ×☢ᜧÙÚÛ ᑣ×ḄâPᓣ mḄN¨Z pæZ ᡠ«mᓣḄç᠒@èµḄ3)ÜÕ§mḄN¨ µÝÞ×☢ᜧÙÚÛ ᑣ×ᓣéêÝ᠒ âPëìூ£¤£QÔmḄN¨Õ§ mᓣḄêÝ᠒ âPZ ᡠ«Æ5cÔÕᜧ×☢ᜧÙÚÛ mḄN¨Z ᑣmᓣêèµ âPᓣ ᡠ«Æ5bÕ§mḄN¨ µÝÞ×☢ᜧÙÚÛ mᓣêÝ᠒ âPëì ᡠ«Æ5dᦑ¤ᫀ5QcbdoூP³3⚪ὃ¸¡mḄâPxᜧÙÚíFḄᐵÎ âPîÙÚḄᓣ®Õᜧµὃ¸¡mᓣç᠒xmḄN¨ḄᐵÎ ᙠµ᪵Ḅàá> mḄN¨ïᜧ ᓣḄï᠒£ð3⚪Ḅᐵñ@Tò/óôèÆḄõö23. 2013•÷ὁùú¡“û”⁚Küý ÞaÞᬰ»ÿ ᔛḄḄᐶ Ḅ 36⚓ ᐳ114⚓
36100g100g20gaa|P“TiT|0I2345g 1&ᡲ(ᜩ*+ᙠ-☢/&᪗1/Ḅ2ṹ4ᑮ67ᜐ9:ᢣ┐=ᔣᑖ(Ḅ@ACᵬᡠFGHI&*⊝KLᔣ ⌱N“P”ᡈ“@”ST⁚,Wᑮᢣ┐ᢣᔣᑖ(ḄXY 2Zᬰᵨᜩ*]Ḅ^]@(XḄ_ṹ`᪗1/Ḅ2ṹabCcᡠFᑣḄ^]e220.8g,hZᬰi&jkᙠlXmḄnop230cm3,ᑣḄtp0.96wkg/n? 3|Zᬰ}~Heᐜ&jkᙠlXḄnoiᵨᜩ*Ḅ^]ᑣ᪵mḄ~=ᜧ ⌱N“=ᜧ”ᡈ“=Z”ᐸe⊤☢ᨵl 4~ᡂZZᬰenoḄeZᬰ&Zஹ]ஹl`ᱛ¡Zᬰᐜ&l¢£l¤ḼZᬰḄ}e¦&Z+ᙠl§ᜐZᬰ¨©ᱛªjkᙠlX«l¬lᵨ]ZXlḄnoᓽ°mḄno 5Zᙠ²ὃZᬰḄ}´µᙠ¶·¸ᜐ¹ºp¶·¸ᜐe¦]ᡠlḄno=Z᪵mḄ~=ᜧூὃ¼2M¦¿nḄ]~.ூᑖ᪆ 1ªᵨᜩ*]ᱥn^]¸ÂÃᜩ*+ᙠl*-☢/Äᢣ┐ᔣP=Åᔣ@4Æ*⊝KLᢣ┐ᔣ@=ÅᔣP4Æ*⊝KLWᑮªmᢣ┐ᢣᑮᑖ(ḄXÇᜐᡈᢣ┐P@ÆḄÉÊËpÌ 2Ḅ^]¡ṹḄ^]Î2ṹÏIḄ7Ð⍝Ḅ^]`no᪷ÄÓÔÕḄ 3ᐜḄnoi^]Ö×Ḅ^]Øᜧ pjkᙠlX/Ùᨵl 4᪷ÄÓÔÕÚlḄnoᓽpḄnoi᪷ÄÓÔÕḄÌ 37⚓ ᐳ114⚓
37 5ÛÜ~Ý|HÞ¼ᑖ᪆no`^]ᙠ]ßàXáâã⁚ä᧕æçèéÏ~Ý|ḄêëÙì᪵ூíîí¦ 1ªᵨᡲ(ᜩ*HIÃᜩ*+ᙠl*-☢/ᙠT*Hᢣ┐=@ᓽ◤ᔣPT⁚*⊝KLWᑮªmᢣ┐ᢣᑮᑖ(ḄXÇᜐᡈᢣ┐P@ÆḄÉÊËp 2Ḅ^]m=220g+0.8g=220.8gÌḄ¦p=%=220.8g=0.96g/cm3=0.96X103kg/m3v230cm3 3|Zᬰ}~H.eᐜ&jkᙠlXḄnoiᵨᜩ*Ḅ^]᪵/ÙᨵlÖ×Ḅ^]Øᜧ᪷Äp=ᐺnoö÷H^]=ᜧVḄ=ᜧ 4&Z+ᙠl§ᜐZᬰ¨©ᱛªjkᙠlX«l¬lᵨ]lXlḄnoᓽ°mḄnoÌ 5ᵨ]ZXlḄnoHZXl¶°øᐰ᎔ᐭ]Xüᨵý]þᶇ ᡠḄ ᪵Ḅᜧᦑᫀ1 2 220.8 0.96X103 3 ᜧ *+,-.ᨵ 4 1234ᙠ67ᜐ ᬰ:;ᱛ=>?*+@Aᙠ63B C63DEG ᵨI23BḄᓽK*+Ḅ 5 ᡠḄ ᪵ḄᜧூNOQ⚪ὃTUVWḄXᵨYZ[\Ḅᑖ᪆ ᐵ`ab⍝Cᱥeᐰ@AghḄYQiḄjk ᵨᜩ m ᙠn⁚ᜩ ḄpqB ◤⌕n⁚ ⊝uv ᙠwᱥmpqB ◤⌕xyzṹᡈ}~ṹwn⁚ᜩ Ḅ ⊝K᪷7“} }”ᩭeᡂᵨY ᪷VWIḄᵨᢞᡈ┐38⚓ᐳ114⚓
3824.(2013•)ᵨ¡kᘤᩞ¤ᙽ¦ᮞ¦Ḅ ¨1©☢Z«¬BḄᦪ⊡ᐙe(g=10N/kg)(1)·ᵬᡠ¹ ᵨ¡Iº¦ᮞ¦ᙠ»¼BḄ½G=2.5N (2)1º¦ᮞ¦@AᙠB☟Eg ·Àᡠ¹ ¡Ḅ¹ᦪF=1.5N (3)᪷ÂÃÄÅÆᳮKÈIº¦ᮞ¦ḄV=1X10"m3 (4)᪷VWÈIº¦ᮞ¦Ḅ=2.5X103kg/n?--三1-二-----一，二--|—-1:.二---二=-二・二一-ூὃN2EḄ.ூᑖ᪆(1)ÏÐÑÒÓ¡Ḅᑖ ᪷ᢣ┐ᢣ¹ᩭÕᦪ;(2)᪷F×=G-FÙI× Ú᪷F×=p^gVI¦ᮞ¦Ḅ (3)᪷G=mgIm Ú᪷I¦ᮞ¦ḄூÝÝ(2)·ÀBÒÓ¡Ḅᑖ0.1N,ÒÓ¡ḄÙFÙ=1.5N (3)¦ᮞ¦ßḄ×F=G-F=2.5N-1.5N=1N,i?W, F×=P439ூNOè⚪é⌕ὃTḄaêëÒÓ¡ḄÕᦪஹ×ஹ½ஹḄ¡ÈVWḄᳮÝYíî ÃẠឋ⚪ñ25.2013•½ò ᙠ¤óᱥᳮᐶõöḄ÷~B øöùêúᜓᵨÒÓ¡ஹ23ஹஹᔾýஹþÿஹᩭᩈᙽᔾḄ1ᙠḄᑁᑮ Ḅ ᜧ Ḅ"#ᜧ.&ᵨ ( )ᐜ+,ᢣ┐/ᔲᙠ12Ḅ34,6ᙠ734 )89:<=>&ᵨ2AᵬᡠD ᵨ EFᩈᙽᙠGHIḄJ K0.6N3PQRḄSTᙠᔾUḄᢞWX ᢴFᔾUᑁZḄGH ᔾUᙠᜧH[Ḅ\ᵨ]^__[ᙠ`abZ AcᡠDᙠ`aI᎔ᐭ〉Ḅ PᩈᙽgᐭI<,ᵨ EPᩈᙽᐰZᐭI AiᡠD 7 EDᦪK0.4N4lE᥅nopJ AiᡠDḄᙽqᑮḄr K1N,ᩈᙽḄK0.6X1Q3kg/m3,5lP`aIḄᣚᡂ|}~ ᵨ EPᩈᙽᐰZᐭ~I EDᦪK0.2N,~ḄK0.8X103kg/nA6lIᐜᵨ EPᩈᙽᐰZᐭI ᯠ40+,ᢣ┐/ᔲᢣᙠ12Xª 2°± EḄᑖ =᪷³ᢣ┐ᢣDᩭ´ᦪ¤3PQRḄSTᙠᔾUḄᢞWX ᢴFᔾUᑁZḄGH ᔾUᑁḄH[µ·ᜧH[ ᙠ·ᜧH[Ḅ\ᵨ] ᔾU^[ᙠ`abZª4AiI&ᵨḄ/QR ¸ḕ ᡠº EḄDᦪᓽK¼ᩈᙽḄ ᪷³½ ¾⊝ÀÁÂÀFr=G+FÄFr ª᪷³Fr=pᩈgVÅÄFᩈᙽḄƪ᪷³G=018=Çᩈ8ÈÄFᩈᙽḄª5᪷³Fr=G+FᢈÄFᩈᙽᙠ~IqḄr ª᪷³Fr=p^gVÊÄF~Ḅª6lIᐜᵨ EPᩈᙽᐰZᐭI ᯠ41FஹØ,rrFஹv/p=——=-----------—Xp=^IJ1LX1X103kg/m3=0.8X103kg/m3ªffi‘ஹ8ÈwXX“FrINPg(6)ᵨ EPᩈᙽᐰZᐭI ᯠ?0.4kgoூὃD2BG34HIḄJᵨ.ூᑖ᪆জMᵨḄ34,NOᑭᵨHIm=pVRᑮᐸ(ঝ34ᱥWXḄ/Yᱯឋ\ᱥḄஹNOᜧ_`ᐵ\b4cᨵᐵ(ঞgO/hMᵨḄNOijḄgOklij:ḄNO(:Ḅ34,NOmnRᑮMᵨᡠp:Ḅ(MᵨḄ,:ḄmnRᑮ?8:ḄூrsrGজt:,MᵨḄ5mw=pxV=0.92X103kg/m3X5X10-3m3=4.6kg(ঝ*+,ᵨ./0ᱥY}~ᨵᓄஹNO_34ᯠ50.92X103kg/m3(ঞ789:Ḅ5m:=pkV=1.0X103kg/m3X5X10-3m3-5.0kg?8:Ḅ5m=m:-mMi=5.0kg-4.6kg=0.4kg(.ᦑsᫀ5G4.6(0.92X103(0.442⚓(ᐳ114⚓)
42ூD7⚪ὃḄ34ḄᱯDஹHIḄJᵨngO/h>NḄj34ᑖḄẠ⚪4ᜧ27. 2011•ᙠᵨᡲᜩ¡¢£¤Ḅ>¥£¤¦ᑮᜩ¡§ᔣ©ª«¬ṹ¯¬ᨬ_ṹ±²³ᢣ┐ᨬ¶☟¸ᙠ¹ᡠºḄ»¼ᑣ½¾.Ḅ¿ÀJ/ᳮ¾ᨬ_ḄÂṹÃÄÅÆṹᨬ±ᜩ¡¡⊝>©ªᡠ¬Ḅṹ,ÆṹḄ»¼¹ᡠºᑣ£¤Ḅ78.4gூὃD26Gᜩ¡ḄÈᵨ.ூᑖ᪆ᢣ┐Éᔣᑖ4Ḅ©ÊËÌ©ÊᜧJ.;ᨬ_ḄṹÄÅÆṹᓽmᵨᜩ¡ᩭ¢ᱥNḄ>ᱥNḄijṹḄ¬ÆṹḄºᦪ(ூrsrGᢣ┐Éᔣᑖ4Ḅ©ÊËÌ©ÊᜧJ.;ᨬ_ḄṹÄÅÆṹ᪗ÐḄᑖ4Ñ0.2g,ᡠnÆṹḄºᦪ3.4gᱥNḄ=ṹḄ+ÆṹḄºᦪ=50g+20g+5g+3.4g=78.4gᦑsᫀ5GÓ¾ᨬ_ḄṹÃÄÅÆṹ78.4gூDÔÕÖᦪḄ>⌕ÙÚ᪗ÐḄᑖ4ÑÛÜ┯ÞḄ³ß.À¹⚪àᐳ6_⚪28. 2016•â¹ᡠºã᪥åæçèḄᜋ8ᨵ¡☢ëìíîãïᳮñgòóᑭᵨᐝḄõö÷å⍝ùú᯿Ìüᙠ¹ªýþÿ S Ḅᐝ☢ᑮAḄᐝூὃA8ᐝḄᐝAH☢ᡂḄᐵ.ூᑖ᪆ ᐝ!ᐝ"#Ḅ$%&'ᐜ᪷*☢ᡂḄᱯ ,-43⚓/ᐳ114⚓1
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48ூ213ABḄlᜧᯖᡠᵬ ᯖ 10cm,#$ᵬᑖ&ᢴ(ᡂ* ஹ+ Ḅ,-ᑖ&.ᯖᵫ g* Ḅl+ ᜧᑣᯖ410cmḄ5 * *Ḅᯖ+Ḅᯖᡠ[,r*78Ḅ5223ᵫ g¡ᵬஹ*ஹ+ABᯖᨬᜧḄ5+ᵨᵬஹ*ஹ+ABᑖ&CḼᜐḄF=ᱥ£C¤¥+ABḄᱥᨬ᪷ABᡂOᱥOᜧ,Oᜧg¡ᐸOᜧḄ5+ 233VὅᡚḄ5ABABḄᕜḄkl⌕Ḅklkᦑ¨\dↈBᱏḄstklᜧ40.05mmrBᱏCᐝᨵ|ᦣ~ᵨᦑᫀ 213**223+233ᜧ4|ᦣூª«¬r⚪R⌕¯ᔠḄᡂ±²ᑖ᪆⌕¯ᔠᱥᳮ¡´¬▭¶⚪ᨵ=Ḅ·l¸.⚪2ᐳ16⚪335.22013•º»3¼½ᔿ¿ÀÁ½Ã|ÄὡḄÆÇÈÉÊËÂÌ|ÆÇḄ⚣᳛ÏÐlஹ]ÑḄᐵÓÔ⌱ÕÖᩞᧇÏÂÙklÚ£<Ðl]ÑÚÛ<ḄÜ᪷]Â,$ÝÞᵨßàᢞãäᔜæ|ÆÇḄ⚣᳛ᦪè⊤éêÐl/cm]Ñ/cm⚣᳛/Hz120.501.502131231.002.001284348.502.50656213ᵨñlò.1êÂÐl ᡠ1óᦪ520.50cm223Ü᪷ÂÇôᨬõḄ5öê233᪷⊤ᦪᔲ“ÂÌ|ḄÆÇḄ⚣᳛hÐlஹ]ÑḄᜧÚ”Ḅ¯øùúûÈüḄᳮᵫÛ2/Û3ᳮᵫýᨵþᵨÿᑴ49⚓ᐳ114⚓
494 ᢞḄᙠᨵ Ḅ !Ḅ"ᵫ$ ᡠ&'Ḅ)*+,-ᓫḄ/0ᩭ20Ḅ3 -⌕ᑏ/06ᫀ8ᑨ:6/06ᫀ;<ᢞ =>?@ᐸ B?"ᔲ;ᑨ:6;DEBᑮᐸ ᑣH"ᵫ &'Ḅ IJᑣK"ᵫ &'ḄூὃN9D⚣᳛RSḄᐵU.ூᑖ᪆1᪷Z[\]^_`a]^_Ḅᑖ^b ?,cR]^_Ḅd]^efg h,cᡠfi]^_Ḅ\ᦪ"?Ḅk^2 SᵫḄ⚣᳛la ⚣᳛mᜧ Smo ⚣᳛m Smp3 qr⚣᳛R?k^ஹtuḄᐵUiiᵨwᑴ4 x?Ḅ,cya {? |?} ~?"ᔲ ᯠூ;1 ᵫ[\]^_ ]^_Ḅᑖ^b"1mm,?Ḅk^"20.50cm2 ᵫ⊤/0ᦪZ 3?Ḅ⚣᳛ᨬ 3?ḄSᨬp3 qr?ḄḄ⚣᳛R?k^ஹtuḄᐵUiᵨwᑴ ᵫ⊤/0ᦪZ /0ᨵwᑴ?Ḅk^tuKஹ?Ḅk^Ktu ᓽᨵᵨwᑴ KE᪷Z⊤/0ᦪZ/04 /06ᫀ;<ᢞ =>?@ᐸ B?"ᔲᑨ:6;DEBᑮᐸ ᑣH"ᵫ &'Ḅ IJᑣK"ᵫ &'Ḅᦑᫀ!;1 20.502 33 KEᨵᵨwᑴ4 <ᢞ =>?@ᐸ B?"ᔲDEBᑮᐸ ᑣH"ᵫ &'Ḅ IJᑣK"ᵫ &'ḄூNf]^_ᦪ⌕ᐜ`a]^_Ḅᑖ^b ᯠᦪ ᦪe⌕R]^_Ḅ]^eᚖtqr⚣᳛Ḅ⌕ᵨwᑴ36.2010•¡¢▅¤☢Ḅ¦ᦻ¨‷Ḅ"ὡ¬”-------ᕊ¨‷ᨬᜧḄᱯN"±Ḅ◚³ឋ µᡊ◤⌕k¸ᙠ¹¤¨º »¼la±KE½¹☢@ᵨ¾¿ÀÁ ÂEÃ☠ᕊqÅ ᡠÆᕊᙠ¨‷ÇḄÈ⌕ឋÉ!Ê ËÌ!¨‷Ḅ“ὡ¬”ᕊ"ᑭᵨ¹Ïf¹¤¬᪗qÅஹaÑ8ÒÓḄᵯ?*ᜓ "¹Öiᵨ×50⚓ᐳ114⚓
50ØḄ,ÙÈ⌕ÚÛᕊEÜᔣ¹ÞÏ ÏḄ⚣᳛ᜧßᙠ10kHz 30kHzJ¸ ᵫ$»ÙÏḄ⚣᳛ào ÆáᡂàᢣᔣឋÏᙠ¹äå ç⍗ᑮ¨‷ஹ¹¾ஹéêë¬᪗ ¼ìËIÞíᩭ IÞíᩭḄÏËᕊîᦈ ᪷ZÓðñ¸Æ`a¬᪗ḄòóᕊÏôᑮḄ¬᪗ç"õ Ḅ IÞíᩭḄϤ̓í”ḄS¼ìᨵᡠᓄ ±Ḅᓄ ";çíḄSo H¬᪗÷ᔣᕊ☠øçíḄSp H¬᪗ùóᕊ)íƤú⚪; 1üὡEÜBᑮᕊḄÏḄ⚣᳛þ"10kHzᑮ20kHz2জᙠḄ‷AḄᙠ10sᑁᦈᑮB‷ᩭḄ⚣᳛ ‷B ‷AḄ!si"7500m$%ᙠ&'()*1500m/sঝᙠḄ‷A,-./‷B,0ᯠᑮ‷BᩭḄ⚣᳛" 2Ḅ,4‷BḄ()"20m/s,5ᔣ78ᙠ‷AஹBḄ:;<=ᑖ?@‷B ‷AḄ!S2*8700m 3ᙠᨴᳫ513 C&ᡠijᵨᕊ᪷m<ᑁ⚪tuூW1ZὡCaᑮ20Hzᑮ20000HzzLḄTᕊḄ⚣᳛ᜧᙠ10kHz 30kHzzLYZὡaᑮḄᕊḄ⚣᳛*W10kHz 20kHz 2ᙠ&'Ḅ!*Ws=vt=1500m/sX10s=15000mᵫg"ᩭḄᡠ⁂‷zLḄ!=s.=1500Qm=7500mS|221ᑖ?=60s1ᑖ?@‷BuḄ_SB=VBt=20m/sX60s=1200mᙠ⁂‷zLḄ!S2=si+sB=7500m+l200m=8700m 3ᙢᳫkᨴᳫzL"* C&ᡠᵨᕊᢈHij4IᙢᳫkᨴᳫzLḄ!ᦑᫀ*W 110,20 27500m,8700m3 C*ᙢᳫkᨴᳫzL" C&'TூR⚪¡ᔠឋ£¤ὃ¥¦}T]§Ḅ¡ᔠ¨ᵨC©ᙠvw!ªxy4◤⌕vwᓫ_Ḅ®)¯=R᧕ᜫ²37. 2019•឵µ¶·ᡠ¸¹ºᑁ»¼@½¹º¾¿ᯚ<ÁÂÃÄ»¼Å(Æ<ºÆ½¹º᎔|ÈᔣºÉÊËÃÌᑮNOÍM*NOMூὃR1J»R`»R ÎÏḄᐵÑ.ூᑖ᪆¾ÒK»R ÎÏᐵÑÓ)ᩭᑖ᪆ÎÏÔÕ»RÖ2ூWÃÌᑮ¹ºḄ×Ø»¼*ÙᔣºÉÊ˪ºᑁÎKÚ)0ᯠÖ2ÎÏÔÕºᑁÒ☢<5ÎÏÔÕÜÝ»RÖ2ᡠ×Ø»¼ÞᩭḄூR⚪ὃ¥¦}ÒKϤ »RḄᐵÑḄßàáâ38. 2013•ᓭä½¾┡ᑁæçèéêḄëìíÞᩭîᵨïÁëìªÃ\ðñò,52⚓$ᐳ114⚓
52óìô<Ḅõ~z@\ᑮöÃ÷òø¨ᵨᡠ¦Ḅᱥᳮ]§ᑖ᪆⌼ᡂû@\ð üḄnூὃR1HWÿᓄᓄᔾḄᱯ.ூᑖ᪆ᱥᵫḄᓄᓄᔾூ !ᩭḄ#$!▬Ḽ'()*+,-)*./ᔾ0#$Ḅ1234ᡠ6789:;< ='>-?)*./@AᵫB#ᑁDE⌴GḄH0#$Ḅ12IJᓣLᡠ6MᑮO53ூὃ1H ᓄᓄᔾḄᱯµ1M ᓄᓄýþ.ூᑖ᪆⌕e°⚪◤⌕⍝ᙠᓄ⌕ᔾᓄூ !"#$Ḅᯚᔣ()#*Ḅ+ᓄ,-ᜧ/Ḅ0ᓣᑮ$34⍗6"-ᓄ789ᡂ;<ᓽ>⁐“A”CD>”,-ḄEFG *ᑁḄᓄ9ᡂ$Ḅ⍗6ᓄ9ᡂூIJK⚪M⌕N!Ḅ"#ὃP;ᓄQᓄᔾḄᱯISTὃP;ᓄ7841.Y2019•0^_ᙠ`᪷bcdḄᐭ#ᐝgAOjdk#ᐝgOB,n᪗dk#pḄ>ltlᦪrூὃIA8 sᐝḄk#ᐝt`.ூᑖ᪆᪷bk#wx k#ᐝgஹᐭ#ᐝgz{gᙠS|}☢ᑁk#ᐝgஹᐭ#ᐝgᑖ{gk#pᐭ#psdk#ᐝgn᪗dk#pQᐸᦪூ ᵫᐭ#p60°,k#p60°,ᙠ{gjdk#ᐝgk#pᐭ#p60°,`ᡠ ூIJᵫ⚪sd{g᪷bk#pᐭ#pᙠS|}☢ᑁ{gḄ|jdᐭ#ᐝgᓽᡂ⚪Ḅ⌕⌕ᐭ#pGᐭ#ᐝg{gḄᜳp42.Y2018•⍳_`ᡠḄGᐝᴻ#ᐭ3ᐭ#ᐝḄᐝt¡¢£ᙠ`jd¤ᐭ#ᐝgḄᢚ#ᐝgḄᜧ¦§¨©54⚓Yᐳ114⚓_
54\o3ூὃIAN sᐝḄᢚ#ᐝt`.ூᑖ᪆ᐝᴻ#ᐭ3ᢚ#pᜧᐭ#pூIJ⚪ᑭᵨ;ᐝḄᢚ#°xs`43.Y2016•᪺_`ᡠ|´ᐝg3#ᑮ☢0£ᜧ¦jdᢚ#ᐝgூὃIAN sᐝḄᢚ#ᐝt`.ூᑖ᪆᪷bᐝḄᢚ#wxs` µᐝ3#ᐭᡈᴻ·¸¹ºᢚ#pᐭ#p»µᐝᡈᴻ·¸¹º#ᐭ3ᢚ#pᜧᐭ#pூ ✌ᐜsd{g»4ᵫᐝ3#ᐭᡈᴻ·¸¹ºᢚ#pᐭ#pḄ°xsdᢚ#ᐝgᢚ#ᐝgᔣ{g☠¿ᦑ ᫀ ூIJὃPᐝḄᢚ#wxÂÃwxḄᑁÄGᐵÆs`Ç✌ᐜjd{g44.Y2013•ᜧÈ_|´ᐝ#ᔣᴻ⊤☢`ᡠ£jdk#ᐝgzᢚ#ᐝg©55⚓Yᐳ114⚓_
55ூὃIA8 sᐝḄk#ᐝt`»AN sᐝḄᢚ#ᐝt`.ூᑖ᪆ÊËᐝḄk#wxzᐝḄᢚ#°xᱯÌGk#pᐭ#pᐝ3#ᐭᴻᢚ#pᐭ#pbKj`ூ jd{gᐭ#p60°,᪷bk#pᐭ#pjdk#ᐝg»ᐝ#ᔣᴻ⊤☢ᢚ#pᐭ#pjdᢚ#ᐝg`ᡠ ூIJK⚪ὃP;ᐝḄk#ஹᐝḄᢚ#ᐝtḄj{{gḄj{ஹk#pᐭ#pḄᐵÍஹᢚ#pᐭ#pḄᐵÍ45.Y2013•ÏÐ_`ᡠaஹbᑖÌ|´ᐭ#ᐝgz|´d#ᐝg£jdaÓ·ÔÕḄᢚ#ᐝgzbÖÇḄᐭ#ᐝgூὃIB6 ·ÔḄᐝt`.ூᑖ᪆ᐜ×wᡠcḄᐭ#ᐝgzᢚ#ᐝgḄᱯIᯠÕ᪷bÓ·ÔḄᐝÙᱯIs`ூ ÚÛg|ᯖIḄᐝgÓ·Ôᢚ#ÕÝ}ÞMᐝßᐝàḄᐝgÓ·Ôᢚ#Õáâãᔣäᦋæ`ᡠ ©56⚓Yᐳ114⚓_
56aFூIJÓ·ÔçᩩᱯéᐝgḄs` জÚÛg|ᯖIḄᐝgÓ·Ôᢚ#ÕÝ}ÞMᐝßঝ}ÞMᐝßḄᐝgÓ·Ôᢚ#Õᐸᢚ#ᐝgḄkᔣÚÛgᯖIঞᐝàḄᐝgÓ·Ôᢚ#Õáâãᔣäᦋæ46. 2012•ᓅ^_ᙠîï“ð·Ôᡂñ°x”ḄòóÝ∑õஹð·Ôஹᐝö÷ᙠᐝᐹù0ð·Ôúwᙠ50cmᜐnü⁚∑õஹð·ÔஹᐝöçὅḄàᙠS|$`ᡠ 1µ∑õ÷ᙠᐝᐹù30cmᜐÿ ᐝᐝᑮ᎔ஹᜧḄᑣḄᯖf=10cm2∑ᙠᐝᐹ 20cmᜐ ᐝᑮḄᱯ"#$᎔ஹ&'⌱)“ᜧ”ᡈ“&'”-Ḅ᯿/01#ᑭᵨ456ᳮᑴᡂḄ)5ᐝ:;ᘤ=>- 3∑ᙠᐝᐹ Ḅ45cmᜐ?@AஹᜧḄB⌱)“”ᡈ“Bூὃ"B7$ᡂFGHᐸJKL.ூᑖ᪆ᡂḄFGPQᵨᭆST$জu>2f,ᡂ᎔&'ḄQᵨ#᯿/0Vঝu=2f,ᡂ᎔ᜧḄQᵨ#XᯖVঞfVu<2f,ᡂ᎔ᜧḄQᵨ#ᢗ[;Vটu=f,]ᡂV@u2f,ᡂ᎔j57⚓ᐳ114⚓-
57&'ḄQᵨ#᯿/0V3-∑ᙠᐝᐹ Ḅ45cmᜐ∑ᑮḄcT50cm-45cm=5cm58ூᑖ᪆ᡂḄ6ᳮ#ᐝḄᢚ²ᐝᨵàáᵨᩭâᱥäḄᐝ¼ᢚ²½åæçèᢚᡠé¼½ᩭâê☢Ḅᐝ³ᢚ²ᔣ$ᩭâ☢Ḅᐝ³ᢚ²ᔣêVᩭâë☢Ḅᐝᢚ²ᔣìVᩭâì☢Ḅᐝᢚ²ᔣëᱥᜧÀ2eᯖÚᡂ᎔&'Ḅூ^_^$ᵨᜧ?@ÐᜐḄ5☢ÑÒÚÑÒḄcᜧÀ2eᯖᡠéᡂḄ#᎔ஹ&'Ḅ$ᡂḄ/ᱥäᩭaêஹëìåí᎔ᡠé᪷¨°ÑÒḄḄ¢£®¯ூ"|^î⚪⌕Å⍝ᡂḄᱯ"HᡂḄᱥä/ïᩭaêëìåí᎔49.2015•┶ò-Lóᨵêᘤᩞ$ᜩ¾ö÷ṹ-ஹùúஹûü2ý-ஹþÿ ஹᙽஹஹḄஹḄ1ᵬ ⌱ᵨ!"#$ᘤᩞ ᙽḄ'()*+জᙠ./᎔ᐭ20mL+ঝ7ᙽ89ᙠ.Ḅ/';ᵬᡠ='>?☢AB=ᦪD3mLGঞ7ᜩJKᙠJL☢!';Mᡠ='NOᩭḄQR*+a.UVṹXᑮZ[ᜐ+b.ᔣ_`“b”ᡈ“_”e⁚J⊝hi'jᜩJJ⊝Gc.ᙠblKᙽ'ᔣ_lmnoṹpXqVṹjᜩJrsJ⊝';tᡠ='ᙽu59⚓ᐳ114⚓
59Ḅm=157.8gGট~ᙽḄ*7.89X103kg/n?.ᡠ ᙽ▭Ḅᜧ`“ᜧ”ᡈ“”2M ⌱ᵨ!"#$ᘤᩞ9ᨵᜩJ'# Ḅᫀ'ᑏḄ⌱ᵨᘤᩞ+ ஹᙽஹஹஹ2¡¢⌕()+জᵨ ᙽḄrGGঝᵨ ᙽ89ᙠ/N¥¦Ḅ=ᦪFi+বᵨ ᙽ89ᙠ/N¥¦Ḅ=ᦪF2GটḄ⊤«¬+0=^ᵨ¯i⊤='°ḄDpூὃ´2L+Ḅ G2M+·Ḅ .ூᑖ᪆1ঝ.Ḅºᦪ+»¼½#¡ᜧ¾½#¡¾¿⊤Ḅ=ᦪ'º☢ABḄ[Àঞ᪷ÂᜩJḄûjᵨÄÅᑨÇ+7ᜩJKᙠJÈ!'VṹXᑮ᪗ÊbËḄZ[Ge⁚ᜩJḄJ⊝hijᜩJḄÌJ⊝+ᱥKᙠᜩJḄbl'oṹKᙠᜩJḄ_l'jᜩJḄÌrsJ⊝GᱥḄÏoṹḄmVṹABḄ[Àট⍝ᱥḄ'᪷ÂѬÒᱥḄ2ᑭᵨÔ ᜧḄᙽ' ᙽᙠÕÖ/Ḅr'7ᙽᑖ×89ᙠÔ /'ᑖ׺ Ḅ=ᦪ'ᑖ×ÒᙽᙠÔ /ØᑮḄÙ'᪷ÂÚÛÜÝÞᳮ'ᑖ×ÒᙽáÔ Ḅ'᪷ÂᱥáÔ áḄÏᑡϬ'ÒÔ Ḅூãäã+1ঝ.½#¡ᜧ¾¿⊤10ml,½#¡¾¿⊤1ml,ᙽḄç*40mLḄ*20ml,ᡠéᙽḄ+V=40ml-20ml=20ml=20cm3ঞa.7ᜩJKᙠJL☢!'XqVṹᑮZ[!b.;Ì_Ë!ì'J⊝hiᔣ!ìḄ_ËXq'jᜩJJ⊝u60⚓ᐳ114⚓
60c.ᙽḄ+m=100g+50g+5g+2.8g=157.8g»ট~ᙽḄ*+p=JE=157.8g=7.89g/cn?=7.89X103kg/m3»V20cm3ᵫᐜ ᙽḄ'ᯠô ᙽḄ'ᙽ!õöᨵ#$'÷ø Àᜧ'ᡠéᙽ Àᜧ2¢⌕()+জᵨ7ᙽùú'ᵨ ᙽḄrGGঝ/᎔ᐭ〉Ô 'ᵨ ᙽ89ᙠ/N¥¦Ḅ=ᦪFiGঞ/᎔ᐭ〉'ᵨ ᙽ89ᙠ/N¥¦Ḅ=ᦪF2ট~+ᙽᙠÔ /ØᑮḄÙ+FÙ=G-F|,᪷ÂÚÛÜÝÞᳮý+G-F,G-Fi=pVg,ᡠéV=----L,pgᙽᙠ/ØᑮḄÙ+F%=G-F2,᪷ÂÚÛÜÝÞᳮý+G-F=P4?@ᜐ;bஹD5cஹ157.8g5©7.89X1035Nᜧ;022Q⌕STUV)ঞᵨXYZ[ᙽᙠ0"\]^_`2ḄaᦪF2ூefh⚪ὃklmḄ$% nopSTqrsᨬu⌕ḄST vᐸxyᜩ{ᡈxy}~ STᩭᜧḄ%50.02012•☘2⚪--}Ḅ$%)61⚓0ᐳ114⚓2
61#⍝Ḅ$% ᨵᙽ$%po(po62¯1ঝᵨÙ9XYÖ×mÚÛ`Ü Ê×mÚᩈᙽ ÝᐸÛ ᵨ?%¥ªÞÍXYḄ¾¿AL2,¯25ঞ9ÊòᦪÕóᐭâ(Põ=.0°LL2 ,,[öªp÷ZAL.]ூefÞ⚪Q⌕ὃkḄr«ùúᑭᵨÑZᨵᐵ#ý}$%Ḅ±è þᔠ ḄᨵᐵᐵὃḄᳮ63⚓ᐳ114⚓
63ὃ ᓱᱏ1."#Ḅ$ᵨ&ᐸ(ᦪூ+, Ḅ-,"#$ᵨ/(1)ᙠ$ᵨ"#12345/জ789Ḅ:;--=:Ḅ"#?3ABCḄ"#DE9=ḄᨬG"#3ᡈIJ9=ḄᨬI"#3K⌕ᣚᵨNO:;ᔠ〉Ḅ"#3ᔲᑣ"#TḄUVW=X"#Yẚ3ᡈὅ\E"#].ঝ-`9Ḅᨬab#]31cᵨ9:W1de(E"#].(2)"#$ᵨ;45/জ"#ḄgᴻiᐰklᐭnḄUVo3\⌕pᑮrᘤtᡈrᘤu.ঝ"#gᴻilᐭnUVv⌕wNyz3C"#Ḅ{ᦪ|}v~(ᦪ.ঞ(ᦪgᴻi⌕ᶇᙠnUVo3"#oUḄ⊤☢.ூ⚪ᔣ(1)"#Ḅ(ᦪ⚪ 3bஹ:;ஹᑖ#]3(ᦪḄ2.(2)᪷ᱏᑨ:;oḄ┯¢£⚪ 3A¤¥⚪3¦§⊤¨Ḅ©ªឋ.¬1ᵨ"#:®oUVḄ"#3ᡠ{Ḅ°±²³oḄ()ᑖ᪆/·"#/1."#ḄgᴻiᐰklᐭnUVo3\⌕pᑮrᘤtᡈrᘤu;2."#gᴻiᐭnUVv⌕wNy3C"#Ḅ{ᦪ|}v~(ᦪ/3.(ᦪ"#Ḅgᴻi⌕ᶇᙠnUVo3⌕"#oUḄ⊤☢¸4.:24ᐜBnUVḄ"#3º"#Ḅ:;ᑖ#]3»ᔠ〉cW:.º/ApᑮrᘤḄtk3ᡠ1┯¢Ḅ.BpᑮrᘤḄ¼u.ᡠ1┯¢Ḅ.64⚓(ᐳ114⚓)
64C"#Ḅgᴻi½ᨵᐰklᐭnUVo3ᡠ1┯¢Ḅ.ᦑ⌱D À/"#Ḅ$ᵨÁoᱥᳮÃÄÅ⌕Ḅᢈ=ὃ᪶ᑁr3ᓽ$ᔁ☢ὃËEÌḄ⚣᳛£ÏGḄ3ᡠ1N}⌕ÐÑ"#Ḅ$ᵨ³.¬2$ᵨ"#3✌ᐜ⌕789Ḅ:;-`9Ḅᑖ#].aÓᵨ"#:®oUVḄ"#3ᑖÔÕÖ×Ø3ᵬ ᡠ{3ᐸoḄ×ØÚ oᡠ{Ḅᵨ"#ᑖÔÛḄÜÝḄ"#3ÞßÜḄ"#-2°C3ÝḄ"#88࠷.ᑖ᪆/1$ᵨ"#2/✌ᐜá`9Ḅ:;3ᡈὅâ⌕á`9ᡠ=:ḄᨬG"#ᨬI"#Ḅ"#?¸ᯠvá`9Ḅᑖ#]3£KNäaåæ⊤Ḅ].2$ᵨ"#/জ"#ḄgᴻiᐰklᐭnḄUVo3\⌕pᑮrᘤtrᘤu¸ঝ"#gᴻilᐭnᱥVv⌕wvNyz3C"#Ḅ{ᦪ|}v~(ᦪ¸ঞ(ᦪ"#Ḅgᴻi⌕ᶇᙠUVo3⌕"#oUḄ⊤☢.3$ᵨ"#:UVḄ"#3(ᦪᐜá`çèḄ3ᯠv-`:;ᑖ#]3ᨬv(E{ᦪ.º/$ᵨ"#:UVḄ"#3⌕ᐜ789Ḅ:;-`9Ḅᑖ#]¸$ᵨ"#:UVḄ"#3"#Ḅgᴻé⌕ᐰklᐭnUVo3\=êëUV(ᦪ3Cìᔠí±îï/5"#Ḅᑖ#]1࠷,:ÜḄ"#3"#oUḄU☢ᙠ0࠷1èðåᜐ3{ᦪò-2C:ÝḄ"#3"#oUḄU☢ᙠ80࠷18åᜐ3{ᦪò88࠷.ᦑóᫀò/:;¸C-288. À/õ⚪ὃḄ"#Ḅ$ᵨ(ᦪ³¸"#Áoᱥᳮᨬö÷Ḅ:øᐹ3◤⌕ÐÑ.ூº⚪³ û·"#Ḅ$ᵨoN}⌕ü²ý=þgᴻiᐰklᙠnUVo3ÿ ᑮ65⚓ᐳ114⚓
65ᘤᘤ.ḄᦪᙠᦪḄ !"#$%&ᑁḄ()*⊤☢-..ᵬ02.ᰚᓄ45Ḅ678!ூ:;<Ḅ=;⌕@A:⍝ᰚᓄᔾDஹ45FDGᑖIᨔKᨵ6MḄᰚ<45<ᰚᓄ N"ᨔK45 NGOᨔKPᨵ6MḄᰚ<45<.QὃᑨTUV8!WᰚᓄUVW458!"XᑨTUVWᨔKḄᰚᓄ8!UVWOᨔKḄᰚᓄ8!"ᡈᑨTUVWᨔKḄ45OᨔKḄ458!6VZ66"++ᑖ᪆✌ᐜ@AᰚᓄlmW6VᔾDḄlm.ᐸo⌕ᑖIᨔKpOᨔKᙠᰚᓄ45Ḅᨬᜧst"UuW6Vᨵᰚ<45<"6VPᨵᰚ<45<.vAஹhḼ7Ḅxy"ᱥKḄᙠ*ᓣ"{@ᱥKᙠᔾD"|ᨵ6]7ᔾD N"{@}WᨔKᰚᓄḄ8!GBஹhḼ7Ḅxy"ᱥKḄ6~ᙠᓣ"{@}WOᨔKᰚᓄḄ8!GCஹhḼ7Ḅxy"ᱥKḄᙠ"{@ᱥKᙠFD"Xᨵ6]7FD N"{@}WᨔK45Ḅ8!GDஹhḼ7Ḅxy"ᱥKḄ6~ᙠ"{@}WOᨔK45Ḅ8!Gᦑ⌱B.<v⚪Ḅᐵᨵ<"6W@AᰚᓄᔾDஹ45FDGWᑖIᨔKᨵ6MḄᰚ<45<"OᨔKPᨵ6MḄᰚ<45<.e28Wᱥ_ᱥNᓄlmQh7NᓄḄ8!"&8!ḄWA.∑ḄᰚᓄlmB.∑Ḅ45lmC.ḄᰚᓄlmD.Ḅ45lmᑖ᪆᪷8Ḅ$ᔣ"✌ᐜᑨT8WᱥKḄ45lm"ᨵᨔKᨵ45<"᪷*ᑖ᪆ᑨTAḄ⌱⚗.vᵫ8:h7Ḅ£¤¥"ᡠW45lmGᙠNᓄlmQ"ᨵ6ᩩ.§¨©ª7Ḅ$]"{@ᙠ]7ᑁPᨵ«¬Nᓄ"ᡠ7Ḅᓽ¯&ᱥKḄ45<"ᨵᨔKᨵ45<"◀AஹBஹCᦑ⌱D.<⚪ ²⌕᪷8!ᑨTWᰚᓄ³W45´!"³⌕µvWᨔKᨵ45<∑67⚓ᐳ114⚓
67WOᨔKPᨵ45<.ᙠ45lmQ"⌕¶·"¸ᱥKḄ¹ᑮ45<"ºᯠlm¼ᯠWFDlm"²W ½«¬Nᓄ.ூv⚪<¾⌕ᢕÀᨔKOᨔKᰚᓄ45ᱯ<ᨔKᨵ6MḄᰚ<45<"ᰚᓄ45 N"ÂÃᔾDFD"ÄÅ⌕ᵨÇÈᩭÊÀËÌḄᱯ<.3.ᰚᓄ45ḄÎÏÐÑூ:;<Ḅ=;ᰚᓄ45ḄÎÏÐÑὁÓᐜÔg"ᯠÕÖĬᑖ×ᑮÐÑØÙÚÐÑ.ᡃÌ6ÜÝ∑¯e"ᩭẆÏᨔKOᨔKᙠᰚᓄ"ËÌᙠßஹàឋ☢Ḅ â.eḄᰚᓄ1äåᨵḄæçè3cmFᙠëᨵDìí¥¨ᰚ<"Ḅᰚ68f214ghijkᙠlmE$nopqrᙠs $ tuv]wxyᙳᒴ2⌱}“ᙳᒴ”ᡈ“9ᙳᒴ”4.224o:;ᐭpq 1$:;Ḅᴻ⌕ᐰSᐭ]wx $9⌕ᑮpqᡈpq.1:;Ḅ<ᦪZfᡠ<$ᑣ1:;Ḅᦪt460c.234E⊤ Ḅᦪ.1012345678910/min:4042444648484848485053/࠷᪷⊤ ᦪ£¤$¥ᱥ¦Ḅᰚ! 48¥ᱥ¦ ᨔ]2⌱}“ᨔ]”ᡈ“¨ᨔ]”4.244©ª¬]ᰚᓄ1:ᓄ^_Ḅ Z®ab Ḅa.ᑖ᪆.214]ᰚᓄ1:Ḅᓄ^_ 1$C³´µᵨs·¸$ᱥ]Ḅ:ᓄ¹ºᙳᒴ$n»ᓄ¹º᠒$¼L :.224ᙠvᵨ:;1$ᴻ⌕½¾¿ᱥ]ᐙᑖÁÂ.ᙠÃÄᦪ1$⌕ᐸᑖÅ.234ÆÇᨔ]¨ᨔ]ᙠᰚᓄ() ḄÈÉ.ᨔ]ᙠᰚᓄ() $:9ʨᨔ]ᙠᰚᓄ() :9ˬᓣ.Íᑖ᪆ᨔ]ḄᰚᓄZ+.¤⍝ᨔ]ᰚᓄ1Ḅ:tᰚ!.244Ï(Z+ᑨËᨔ]½¨ᨔ]1$! ᔲᨵCÓ1ᱥ¦ᔾ$H:9ÔᓣY,Ö×Ø1ÖÙᱥ¦Úᑮuᰚ!$Ûᙠᰚᓄ.Ü.214oaᨵ]wxḄpqrᐭs $Ö s·¸$µᵨs·¸$ᱥ]Ḅ:ᓄ¹ºᙳᒴ$n»ᓄ¹º᠒$¼L :.224ᵨ:;¿Ý]wxḄ:1$:;Ḅᴻ⌕ᐰSÞᐭ]wx $9⌕ᑮpqᡈpq.c69⚓2ᐳ114⚓4
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70A.BᓄB.0ᓄC.ᰚᓄD.Äᑖ᪆>ᱥ@ᵫBᡂEḄFGÈÉ0ᓄ.>a¤¥ÊËᜧJ0¤ஹ̤'0¤O̤ᙠ¼½0ᓄÍWᜧJ¸¤M0'M0⍗¬Ï¾᧕¸ÐNWᓻ◅^a¤¥▬ÔἭ¯ᔾ±ஹᡭ´µ.ᦑ⌱B.5×>⚪ὶÙW ▭ὃÜᱥᓄḄÝÞßVàẠ78ḄὃÜ*+âᓫ.£2>2009äåæèé⚪>“ᙢᳫ◤⌕íîïºᩭñòEᓄ.”ᙠô3Ḅõᜩ÷øUùᑁúᙳḄᨬfý-(;=A.ᡭþᵯ ᡧB.ᔣᙢ☢C.ᐵD.ᡭᑁᙠḄᵯḄᑖ᪆⌕ ᑁḄᙳ"#$%᪷'ᡠ)Ḅᱥ,ᓄḄ./ᩭᑖ᪆1ᓄஹᰚᓄஹᓣ5⌕ᔾ78$% ᑁ"#.:Aஹᡭᵯ ᡧ;<=>?@ABḄC#8DEFḄGHIJ>8IJᔾ78ᡠ%DKᑮM>8NO<ᦋ,?@Ḅ"#QBஹᔣᙢ☢F$%RSIJᔾ7ᩭ ?@Ḅ"#QCஹᐵOTᦋ, ᑁ"#QDஹḄUᳮWᑭᵨZᑭ\]Ḅᱥ^O_Ḅ1ᓄ`Hᓄ8aᑁḄ7bcdᑮḄ☢8fghijḄkTlm7b.ᡭTn=hijḄg8ᔣ?@olmpqḄ7b8Tr?@Ḅ"#ᓣs.ᦑ⌱B.vwx⚪ὃ{ᱥ,ᓄ./ᙠ|}oḄ~ᵨ8ὃ{Ḅᮣ}8x⚪ḄvW⌱⚗DḄᑨ_8ᡃ⌕.⍝ḄUᳮ.ூ:⚪v:⚪g\⌕ᡷ8ᢕIJḄᱯvQk⌕ᱥᳮ)--ᑴ,b.5.ᩩூ./vḄ/¡1¢ᙠH£⊤☢`ᑁ¥fg¦§Ḅᒓ©1ᓄª«¬.¡2gḄ®H£g⌕O_ᔾᦈ7b8N"#°ᢝᙠvO,.²71⚓¡ᐳ114⚓¢
71¡3¢H£Ḅ"#¬v.OfH£ḄvOf.ᓽrf\H£8·Ḅv¸⌕¹ºḄ@h»,ᜧ@h½¾s8H£v¾s8¿ÀÁ¾ .1᪗Äᜧ@hÅḄvÆ100°C,ËWᨬÆÍÎḄ.ᙠ\Ḅºh½Å8;<ᙠÏ\ᱯ"#¡v¢ÐᢝÑ=7Ŧ§.OfH£ᙠÒfḄh½ÅḄvWOfḄ.¡4¢ÔÕḄᩩWজ×ᑮvQঝ<ÙÑÚºᔾ7.ூÛ⚪ᔣḄ8Ḅᩩ8gḄª«Ü«WoὃḄ7v.Ý1ÅᑡᐵßḄàáâãḄW¡¢A.gᑈmḄ“ç@”WI@B.Ḅv¹@hḄ » C.Ḅª«;J|ᙠH£Ḅ⊤☢D.ëÙÑ=78Ḅ"#TO_ᓣsᑖ᪆ḄᩩW×ᑮvஹ<ÙÑÚºᔾ7.H£g"#°ᢝO,8WH£⊤☢`ᑁ¥fgJ|Ḅ1ᓄª«.:AஹgᑈmḄ“ç@”WìHí8Oîᔠ⚪.BஹḄv¹@hḄ » 8îᔠ⚪.CஹWH£⊤☢`ᑁ¥fgJ|Ḅᒓ©Ḅ1ᓄª«8Oîᔠ⚪.DஹH£gᔾ78N"#O,8Oîᔠ⚪.ᦑ⌱B.vwð⚪ὃ{ñIJ`Ëòó1ᓄª«ḄOfÀᜐ8õßöẠ./8⌕ø)|<ùú᪆.Ý2üýþÿ ┡Ḅ“”1ᑖ2ᑖ… ᩭ-- Ḅᑖ᪆ Ḅ!#A.&'(ᨵᱯ+,-B./0“”Ḅ12C.“”ᙠ5Ḅ6789ᓣ;D./0 =>ᨵ?ᔾᦈB“”CḄDᑖ᪆E⚪GCḄ“”HIJḄKL8MNḄ8OḄPQ18OḄRSPT72⚓!ᐳ114⚓#
72Qᙠ5Ḅ678ᓣ;ḄY&'(Ḅ ZᙠḄ“”C 8[\]KL^“”Ḅ1_`2.aEAஹ&'cᎷḄ&'(ᨵᱯ+,-ḄᡠfA┯EBஹ&'⊤iᵨḄ“”8ᡃlmnḄoḄ1_`2Rp67qᢝ1s8tᡠf8- ⌼ᡂ]wB ḄYCஹ“”ᙠ5xᯠᔾᦈDzs678tḄᡠfC┯YDஹ =>ᨵ?ᐭḄ“”C“”[|9?Ḅ}ᓄ?8[CᔾᦈḄDzMNḄ1_`;ᯠ[ \]ᡠfD┯Ḅ.ᦑ⌱B.1EPQᩩEᑮ1◤⌕ᔾDs5678ᦋtY&'(ᨵᱯ+,-⌕ᡃlᗐὃ-ᵨa&'CḄ .ூa⚪¡1¢⌕Ba5Ḅ¤¥ᙠ¦§CḄ¨ᵨa⚪Ḅᐵª.6.1¬1®¯Ḅᐵ°ூ1Ḅ±!1#1ᢣᱥQᵫP¶ᓄ0®Ḅ67Y!2#PQḄ1·®¯ᨵᐵ®¯¸ᜧ1ᓣ;Y®¯º»1¼2.sPQ567qᢝ8t.!3#ᳮᵫEPQᙠᢵÀḄ5¦î¯Äî¯!⛳Æî¯#ÇÉḄ¯Ê5PQ[Ë5Ḅ67PQḄ1.!3#ÄÉḄ¯Ê¸ᜧ5ÌÍᓣ;67Î-ÏᜧfÇɯÊᑮ.Äɯʼ2567_`2Ḅ5-ÐÏî¯ÇɯÊᑮ.ூÑ⚪ᔣᑭᵨ®¯1ḄÔÕᩭaÖ¦§CḄ ×;¯┡ÙÚᱥÛÜÝÇÞ⚪cÑ⚪ß1.×1EᡂcḄàáâãäå0Bæçàáᙠè⌶êëஹìíÇî⁚Cῖñtò¬;6ᩔô5àá⃩öᡂᑖḄẚømmàáùúûῃ?Ïýᡂ0ῃ?àá.ᱥᳮḄþ7ÿ,ῃḄᳮ73⚓ᐳ114⚓
73A.ḄḄᑖ ᓣ"#$%&ῃB.Ḅ'(Ḅᑖ )ᓄ#$%&ῃC.Ḅ+,'- .(ᑖ/Ḅ01 #$%&ῃD.Ḅ+2'-3$ᜧᜧ56Ḅ78Ḅᑖ )ᓄ#$%&ῃᑖ᪆:;<⊤☢Ḅ+2?ᜧஹ78ᓣ(+2A-ஹ785BCᑖ᪆ᑨE.G:+2'-H᪵ᜧᜧ56Ḅ78Ḅᑖ 7J)ᓄ#$%&ῃᡂLῃ.ᦑ⌱D.8O:P⚪ὃS6;<78T+2ḄᐵVWX78T+2ḄᐵVP⚪ḄᐵV.Y2:ᵨ(2┡\]^ᱥ`⁚bcᧇe⁚ḕgh3LA.┡ᑁ+2ᜧ;<78(B.┡ᑁ+2ᜧ;<78C.┡ᑁ+2-;<78(D.┡ᑁ+2-;<78ᑖ᪆:ᵨ(2┡\]^ᱥ`⁚bcᧇe⁚ḕgh3L(2┡ᑁ($(2┡ᑁ(3L+2($j78(⌼ᡂḄ.G:᪷B78T+2ḄᐵV+2(78(mn3(2┡ᑁ+2ᜧḄᡠpBஹCஹD┯rᦑAst.ᦑ⌱A.8O:⌕GvP⚪◤⌕x⍝78T+2ḄᐵVn⌕x⍝(2┡ᑁ+2(Ḅ.ூG⚪{|8}⌕ᳮGW+2T78ḄᐵV.7.;ᓄ;ᓄ&ூx8Ḅ1:ᱥᵫ+L;Ḅ;ᓄ.;ᓄ. 2;ᓄ{|:জ5:⌕ᩩᐕ+<5ᑮḄgp;ᓄ.74⚓ᐳ114⚓
74ঝ2¡<¢:ᨵḄ+<ᙠ¥¦2¡<¢§`;ᓄ©ªឋᡭ®Ḅ¯°.ூ±⚪{ᔣᱥᓄ&ḄᑨE³ᱥᓄ´µḄᔾ·¸ḄᑨE±⚪Ḅ⌕8.Y1:ᵨᵯ¼½g7J¾#¼ᘂÀᑈ“Ä+”mÆᜩᡭÈÉÊËgpÌᑮÉÊᕜÎÏÂ&“Ä+”p¦Ð|stḄA.¼ᘂÀᑈÂḄ“Ä+”7JgÒÓḄÔ+B.ÉÊᕜÎḄ“Ä+”ÉÊÖÓᓣ"×ᡂḄÔ+C.ᙠHÙÚ“Ä+”×ᡂḄ◤⌕ᔾᦈÜD.HÙÚ“Ä+”Ô+;ᓄ×ᡂḄᑖ᪆:ᱥ# L;Ḅᰚᓄᱥ#;L ᱥ#;ᡂ+ßL)ᓄᱥ#+ᡂ;ßL;ᓄᱥàá# ᡂ+Ḅ&ßLᓣ"ᱥàá#+L ".G:1ᵨᵯ¼½g7J¾#¼ᘂÀᑈ“Ä+”¼ᘂÀᑈÂḄâ(ḄÔ+⍗ä åᡂḄ-æçè;ᓄ&m2Æᜩ+ᨵᜧÜḄÔ+Ô+⍗ᑮäḄÉÊ åᡂ-æ×ᡂ“Ä+”çè;ᓄ&.3Cêὅçè;ᓄ&;ᓄ.ᦑ⌱D.8O:P⚪ìÓíḄ&ὃSÓîᱥᓄḄᳮGG⚪Ḅᐵïᐜñòóᓄô¾ᱥ<Ḅõötᱥᓄ÷ß.Y2:ø©ùÉúḄûüᙠýþ©ÿ ᓄ.ᙠᑁᙽ⌲ᰚᓄḄ ᑁḄ !"#“ᓣ&”ஹ“)*”ᡈ“!”,.ᑖ᪆/ᱥ1ᵫ3!5ᓄ.ᱥ1ᵫ6!ᡂᰚᓄᰚᓄᔾ9.:ᔠᱥḄ 50࠷.>/?ḄAB3 C3⍗ᑮFḄGᓄHᡂḄ.ᙽᙠᰚᓄ Iᔾᦈ9KLᕜN O).ᙽ⌲ᰚᓄḄ ᵫP:ᔠᱥḄ 0࠷,ាSḄᰚTḄU6Tᔾ9ḄVᰚᓄXᙠᰚᓄḄ Yᢝ!.[75⚓"ᐳ114⚓,
75ᦑ_ᫀ5/ᓄஹ!.Ta/b⚪d⌕ὃghij/ᰚᓄkᓄᱯTḄᳮ>knop⍝rẠ⚪.ூ>⚪uvTw>⚪Vpy⌕zᡷy|ᢕ~ᓄḄᱯT.8.ᜩḄLᵨூTḄpLᵨuv1.⌕ᙠḄᙢuṹ⌕ᢣᔣ⁐0 2.⁚⊝"ᜩḄ,ᢣ┐jᑖ 3.ᡲKᱥ¡ᡲ¢ṹ᪷¤KᱥḄH¥¦ᙠ§ᴻᘤªᡈ«¬Ḅ®¯ᐜ¦ᙠ±pᜩ®²§ᴻᘤªᡈᱏḄ1KᯠµK¶ᱥ14.·¸¢ṹ¹º»KᱥḄᨬᜧ¾¸¿⌲ÀÁᡲᜩÂÃᑮ0.1ĸÁ¢ṹÅÆÇ᪗É®Ḅṹᢣ┐ÊËj 5.F9ḄᱥÌÍᙠᜩ®K¦ᐜᙠÎÏᘤᑁÐ µÊ6.ᱥÌḄ1K=¢ṹḄÒ1K+ṹᙠ᪗É®ᡠjḄ ¾7.ÕᵨÖṹ×Øᵨ═?ÕOḄ¢ṹ¦ᙠ¢ṹÚ KÛܦÝṹÆÞßT8.KÎÏḄ6ÌàáV¦ᙠâᡲ®ᔜpäå±1KḄᯠµÝàáᙠ®9.᧕ç>Ḅàá×Øᙠ§ᴻᘤª®"/éGஹ⊤☢ª,ìK10.¢ṹíi┤ïKðñòó¢ṹíôõïKðñòᜧöLᵨ÷ø¯⚗I.¯ᐜÝṹÆ0 Å⁚⊝Lᜩ¡⊝2.¡¢ṹᱥÌ3.¢ṹÃᵨúû⌕ᵨ╛?ᜳÕLᵨV⌕þþûᙠLᵨᜩVṹÿ ᵨ4.Ḅᱥ ᙠᜩᐜᙠᘤᑁ 5.!"ṹ$%ᜧᑮ()*⁚ḕ-.6.ᙠ/0) 1⊝34ூ6⚪8ᔣ;76⚓=ᐳ114⚓?
76ᢣB⚪0ᜩḄCᵨḄ┯E)*F┯ECᵨᜩ⌕IJL6⚪ḄᐵNO1:(PQ“ᵨᡲTᜩUᱥV”XY-)ᵨZJ⁚[ḄᜩUᱥV)\]ᢣ┐☟`-ᢣᙠᑖbTḄ0cdbefg)⌕Cᜩ⊝)hiḼ$=?A.klno34ᔣnpBqrB.klno34ᔣfpsqrC.kᜩnTḄtṹuvqrD.ᔣnwṹᑖ᪆yᜩᙠCᵨ/0)ᨵ{|J⁚ᜩ⊝yq-U}J⁚ᜩ⊝~L/0J⁚ᜩ⊝U}J⁚ᜩ⊝◤J⁚⊝34~/0J⁚ᜩ⊝◤!utṹᡈwṹyᵨZJ⁚[ḄᜩUᱥV)\]ᢣ┐ᢣᙠᑖbT0cdbeḄfq)Pfᱥ)ᑣᔣnT!tṹᡈᔣnwṹ)ᔣnwṹ)nT0!q|(Ḅtṹ- J⁚⊝34ᦑAஹBஹC┯E)ᦑ⌱Dy⌕Ḅ⚪)✌ᐜ⌕ᜩḄCᵨᨵq|ḄyCᵨᑣஹ¡⚗£)¤⌕ὃ⇋ᑮO2y§ᡠ©LXY ᵨḄᜩ)ᙠª«¬☢)tṹ¯0°ᜓḄtṹᨵ50gஹ20gஹ10gஹ5g£]ᨵq²Uᱥ)³´ᐸVᙠ30gfn¶·*¸XY¹¬⊡ᐙ¼y=1kwṹᑮ᪗¾Ḅ¿dbe)ÀÁᢣ┐ḄÂÃÄÅ)ÆJ⁚⊝34)Cᜩl⊝=2kᱥᐭfT)ᵨ╛ÉᜳË20g,10gtṹᔜq|ᐭnT0,Îᢣ┐nÂ,˸10gtṹ,!5ᓃấṹÑ-J⁚wṹ,Òᑮᜩ⊝ 3·nT0tṹḄVÓ᪗¾wṹᡠḄVÔ,!)ᓽÖ²UᱥḄVᑖ᪆y᪷ØᜩCᵨ}ḄJ⁚Ùᑣஹ-!utṹḄÙᑣஹÚᦪÙᑣÜÝ⚪y=1ᜩCᵨ}⌕·ᜩᑮª)·wṹÞᑮ¿dbe)J⁚⊝34Cl⊝~ᦑÜᫀÖy¿dbᜐஹ⊝34=2ᜩ-!tṹ⌕ᵫᜧᑮ()ᨬ J⁚wṹCl⊝~ᦑÜᫀÖy20ஹ10gஹ10gஹ5g;77⚓=ᐳ114⚓?
77=3?ᜩÚᦪ-ÖtṹV!wṹḄdbÔ~ᦑÜᫀÖy!yᜩLä0ᱥᳮ0æÝḄU«ᐹ)⌕%J⁚ஹஹÚᦪ£8☢èéᱞë)¹¬ì⌕íîூ⚪8ïÞ=1?ᜩḄCᵨ*ᵨ*¸ñòóôyUV)ᵨᜩ)ᐜ)J)wṹf¿)34ᩭJ)fᱥnṹ⌕óö)ᐜᜧ (═Ëṹ)⊝V!wṹ=2?Î (ùᢥ“fṹnᱥ”Ḅ8û)üýþUᱥḄV£tṹVÿ ṹᙠ᪗Ḅᦪড-ᑖ┐ᡲ⊝ ṹ᪗ấṹ9."Ḅᜧ$%&ூ()*Ḅ+)"ᜧ$ᵫᱥ/012⌕%&ᱥ/"Ḅᜧ$45178ᓫ:4;ᓫ:4kg/m3,5BC4ᓟEFGHI7Jᵨᓫ:4g/cn?.5BC4EFGHᔖI7ᓫ:ᣚQ41g/cn?=1000kg/rr?5UV4WXᓫ:%&4g/cn?ᓫ:ᜧ75278ឋ/4[] [^]_X"ᜧ`5378aᦪbcdᱥ/Ḅ"ᜧ`ூe⚪Hᔣᓫ:ᣚQᵨaᦪbᩭi"ᜧ$Ḅ%&.j14AஹBஹCodᱥ/Ḅ/pmqrsVḄᐵvbwbᡠ.ᵫbz(AஹBஹCodᱥ/Ḅ"PAஹpBஹpc ]Ḅ"p]|}Ḅᐵv~57A.PA>PB>PCPA>P]B.PA>PB>PCJlpA
78C.PAP]D.PAPB>PCPA>p].ᦑ⌱A.*ª4«⚪ὃ®"ḄQ¯8m-Vbwi°ᐵ±²~«⚪Ḅᐵ³.j24´ᵬஹ¶ஹ·oX¸᪵Ḅpº»ᑖ¼᎔ᐭ¿pḄ]À¸᪵/pḄÁᙽஹÃᙽஹÄᙽᑖ¼ÅÆÇᐭᵬஹ¶ஹ·oXpºÈÉ]ÊᨵÌiᑣoXpº]:ᵫÎᑮÐÅÆ~·ஹ¶ஹᵬ.ᑖ᪆4᪷Ò"ḄÓÔzÕᔠ⚪×ØÙᑨ.4᪷Ò"p=%z(V=ÚVPᵫ⚪×z(01Á=01Û=mÜ2.VᵬுÞ¶>Þ·ß(ᵬஹ¶ஹ·oXpºàᐰ°¸•••oXpº]:ᵫÎᑮÐÅÆ~·¶ᵬ.ᦑᑖ¼ã4·2¶2ᵬ.*ª4ä⚪;⌕ὃåæç"èᐸÓÔ "ᜧ$Ḅ%&Ḅᳮ ëì.ூ⚪Hí*îïᵨbwíðñ⚪Ḅ[òóô~4(1)V÷bwÈøùᙶ᪗⊤Ḅᱥᳮpᑖ¼~üý279⚓(ᐳ114⚓)
79527þ×+ÿ ᙶ᪗ᙶ᪗ᔜ⊤ḄᨬᑖḄᦪᜧᓫ;3ᡠ⊤Ḅᱥᳮ 4᪷#$⚪&'(Ḅ)⚪*(ᑨ,-.ᑮ01.10.3456Ḅ7ᵨூ:;<Ḅ=;ᑭᵨ56p=BCḄDE56F=/-m=pV,KLMNOPQ▭7ᵨSḄ)⚪1᪷#56p=gᩭYᱥZ[(ᱥ\ḄZ]\^-_ᵨ56p=`a(ᱥZḄ34-ᯠc$᯿34⊤eKL:⍝gᱥZḄhi2ᑭᵨ56F=klmno[]Ḅᱥ\Ḅ\^[(ᱥ\ḄZ]-ᑭᵨ34⊤p(ghPᱥZḄ34-ᑭᵨ56F=krKLlm(ᱥ\Ḅ\^P3ᑭᵨm=pVlmno[]Ḅᱥ\ḄZ][(ᱥ\Ḅ\^-ᑭᵨ34⊤p(ghᱥZḄ34-ᑭᵨ56m=pVeKLlm(ᱥ\ḄZ]4sஹQuḄᑨ,vwx$ᱥ\Ḅ34ஹZ]ஹ\^Ḅyz-Kᑨ,ᱥ\{suḄ|}QuḄ-ᓽpᱥ=pQu-pᱥVpsumᱥ=1!!Qu-mᱥVmsuVᱥ=FQu-VᱥுVsuூ⚪ᔣᑭᵨ34:;aᱥ\Z]-aᱥ\Ḅ\^$OP\^ᜧḄᱥ\-Z]no[]KL[](CḄ\^-34⊤Sp(CḄ34-ᨬclm(CḄZ]ᨵḄᱥ\ஹ\^nᑣ-no[]-KL[(CḄZ]-34⊤Sp(CḄ34-ᨬclm(CḄ\^ᑨ,ᳫ}su|}Qu)⚪1vᡠḄᑖYᨵZ]Ḅஹ᯼Ḅ341.1X103kg/m3,᯼Ḅ340.8Xl3kg/m3᪷#S£☢Ḅ¥KLᑨ¦A.ᵬ}-ª}B.ᵬ}-ª}᯼¬80⚓ᐳ114⚓
80C.ª}-°}D.ª}-°}᯼ᑖ᪆vZ]ḄnᱥZ-34ᜧ³\^ᡂµy#¶ᑖ᪆ᑨ,Mv·:h£\ḄZ]-ᵫ:vᵬ£\Ḅ\^ᨬᜧ-ª£\Ḅ\^ᨬ-°£\Ḅ\^¹S-᪷#56º=`.vᵬ£\34ᨬ-᯼ª£\34ᨬᜧ-}°£\34¹S-}ᦑ⌱C<½v¶⚪ὃpḄ}$3456ḄᳮM7ᵨ$hᱥZ-34³Z]ஹ\^¿ᐵ$nᱥZ-34³Z]ᡂÁy-³\^ᡂµy2vᡃḕÄ“Ậ”ḄÈÉÊËÌÍÎÄ-Ð⌕ÒᐸÔÕÖÈÉ-×ØÖÙ550g,ᑣv1ØÈÉÖḄÛ^ÜÝ⌕ÞÝmL?2áᵨgÈÉÖᩭâãÍᵨḄ⏓-åcÜÝæÞÝmLḄ⏓çpfÉ=1.0X103kg/m3,pgj=1.1X103kg/m3iIᑖ᪆vÖæ£\Ḅ\^}Ḅ-ᑭᵨ3456ḄDE56V=ka(æḄ\^PÖḄÛ^-æ⏓Ḅ\^eÖḄÛ^Mv1V=550cm3=550mL,Plg/cm32•.•Öæ£\Ḅ\^}Ḅ-•**V⏓=V=550mLïv1ØÈÉÖḄÛ^ÜÝ⌕550mL2áᵨgÈÉÖᩭâãÍᵨḄ⏓-åcÜÝæ550mLḄ⏓<½vð⚪ὃpñ3456Ḅ7ᵨ-lm{ò ᓫᣚmvlcn?=lmL,lXlPkg/m3=lg/cm3oூM⚪ö<÷øù_ᵨ3456úᐸDEûülmᑨ,ᳫ}su|}Quᨵ34yzöஹZ]yz¬81⚓ᐳ114⚓
81öஹ\^yzöhூ:;<Ḅ=;ý\34Ḅ[]ᐵþ}[(ᱥ\ḄZ]\^-ÿ ᙽḄᵨᜩᵨᩭᱥḄ ᑣᵨ!"#ᐵ%᪷'()* + ᑣᑭᵨ-ᡈ/“23”ᩭᱥ+56ᐭ28Ḅᵨ“9ᐭ3”ᡈ“┴3”ᩭᱥḄ*.ூ=⚪?ᔣB!CDᐜFDᐜ*,ᱥ+56ᐭ2HIJKCḄLMNOᳮQD=⚪ᐵR.S1:ᜧUB!CVWXYUZ[ᨵ]◣_]◣Ḅ*`ᜧUḄ*abB!ḄcdeV.gDᵨijkᧇmno2pqrsᵨᜩtu143g.v48gᜧUwᐭm8xyzḄ2{|CḄt.ᜩ⊝C~8Ḅṹṹᡠᑣtu151g.ᵫ|ᜧUḄB!u1.2X1Q3kg/m3.ᑖ᪆1UZ[ᨵ]◣_]◣Ḅ*`ᜧUḄ*ᑣᜧUḄ*ᜧ.iC*ᜧB!V.2ᜩᱥᦪCDṹqṹḄᦪ 2ᜧUḄᜧU2ḄᜧUḄ*ᜧUḄB!.1ᜧU*C_]◣Ḅ*`ᜧUḄ*ᑣᜧUḄ*ᜧ.ᜧUḄ+ᵫᙠiC*ᜧB!V.V 2ṹḄD150g,ṹḄD1g,ᡠᱥḄD150g+lg=151g 3ms2Ḅtm=143g,ᜧUmi=48g,ᑣḄtrri2=143g+48g=191g,_ᜧUwᐭms8C2◀i¢ᑖ.ᑣᨬ%um3=151g,ᑣz2Ḅm4=m2-m3=191g-151g=40g¤82⚓ᐳ114⚓§
82ᑣ2Ḅ*u¨=ª=40g=40cm3ᜧUḄ*2Ḅ*#°Plg/cm3ᑣᜧUḄB!p1=2L=48g—=1.2g/cm3=1.2X103kg/m3V40cm3ᦑ»ᫀuV1511.2X103¾¿⚪8ÀuᜧUḄ*+ÁÀᵨᑮ[3.Ã⚪⚩ZḄ*YḄDiÅÆÇÈḄÉÊ?3°ᦔÌÍ3.ᑭᵨ23+ ᑣÎ* g°ᦔÌÍ.ÏCὃÑÒB!()ḄÓᵨ.S2ÔÏÊ⌕ij+6ᐭ2ḄᩈᙽḄB!×ÒØḄÇÈLMAஹᵨÛÜᡭÞßVàáᙽâãᙠ-äḄ28åØC2☢Ḅ!ViBஹᙠ-8᎔ᐭ〉Ḅ2åØ2☢Ḅ!V2Cஹ_ᩈᙽáᙽíᙠiîïðᐰ¢âᐭ-äḄ28åØ2☢Ḅ!V3DஹᵨᜩᩈᙽumiEஹᵨᜩáᙽum2.1§ô⌱ö÷⌕ḄLMïaøùúûḄLMûüýᙠþÜqDAC: 2ᵨᨵᐵḄḄᦪ⊤ᩈᙽḄpᩈ=^^.ᑖ᪆ 1Ḅ ᳮ!"Ḅ#$%&'◤⌕*+ᱥ-Ḅ./0-1.᪷ᱥ-345ᐭ7Ḅᱯ9':ᵨ;5<=>?@'ABC+ᐸ-1.ᐸEFGHI ᙠKCᱥ-LᢞNOᱥ'ᐜQOᱥ?@ᙠ7'R+/S7☢RᦪV”WQᱥ-0LᢞOᱥᐰY?@ᙠ7'R+/S7☢RᦪV2,ᑣKCᱥ-Ḅ-1V=V2-Vi,ᙠ^_`'aOᱥḄ./b/S7Ḅ-1cdeC/Ḅ. 2QᡠCgḄᨵᦔᦪiᐭ%&p=gkg+ᐸ⊤l&.m 1᪷ḄEF⌕*kn'ᙠC/ᩈᙽḄ-1o'p;aqᙽ':ᵨ;5<'eQaqᙽᢞᙠᩈᙽ>r'ᐜQqᙽ?@ᙠ7'R+/S7☢Rᦪ'WQqᙽ0ᩈᙽᐰY?@ᙠ7'R+/S7☢Rᦪ'ᑣᩈᙽḄ-1stuvᦪ>w'ᙠ^_`'aqᙽḄ./b/S7Ḅ-1cdeC/Ḅ.ᦑy⌕z{|Ḅ}~I DAC. 2᯿kn'ᩈᙽḄ./Im”ᩈᙽḄ-1IV3-V1'iᐭḄ%&g p=EL83⚓ ᐳ114⚓
83mlᦑᫀI 1DAC 2p=——i.V3-V19 ᙠFḄ_`'ᡃO9ᑭᵨ/SC3r5Ḅᱥ-Ḅ-1Ḅ<'^ᵨᑮḄ84ூnæ9Ḅçæᵫ%&p=ekn'⌕C/êëᱥ.Ḅ'◤⌕C/ᵫ^ëᱥ.᪀ᡂḄᱥ-Ḅ./b-1'îḄ85জᵨᜩ*13ᙽ+ḄgmAঝᔣZ᎔ᐭ〉Ḅ¥ᐭṺ-ᵨᴻ"ᤅ§ᑴᡂṺḄ⛳o«-⛳o«ḄijViAঞ¬3ᙽ+ᐭᑁḄ⛳o«t-⛳o«+ḄijV2.628+F⊤Gp=ߟ.v®LMNO-¯vᙠp±ẚ+ij*uv-¥᪷UN▭f1³~Ḅ*+,.+ḄᱯvJop-µ¶ᡂn⛳o«cᑣ³¸o.Ṻᕈº»¼-½⌕c(ᵨ*rḄij-¾Jᡃ\(ᑭᵨḄᱯv.ூ⚪+,vÀᙠNOtÂÃÄ618ᐵp6Æ8ḄÇᵨজÈÉᡠᵨḄ6Æ8ḄÊᨬ Ì.q⌱Î〉ᔠNOᡠᵨḄ6Æ8.ঝ*c6Æ8ᙠÐ☢&-ᯠÒ«i᎔ᐭ6Æ8t.ঞÓÔ6Æ8Z«☢ᑮḄc-Ö×⌕Ø«☢Ù.Ú«☢JÛÜḄ6Ý8,ÓÔc⌕qÛÜḄàánâ.Ú«☢JãÜḄ6Ýä8-ÓÔc⌕qãÜḄ&ánâ6(nã⚔Ûà8.628*æiijḄ+,জçܼèᑣḄæi-(ᵨ*1ᨵᐵᦪU-ᯠÒ᪷U_Gê1ij.ঝçܼ³èᑣḄæi-(ëᵨ“,”ᩭ*rḄij.ᐹið,JA.ᙠ6Æ8ᑁ᎔ᐭ〉Ḅ6qòóô*æinâ8-ᦪijViB.ᵨö×øæi-᠒᠒ᐭ6Æ8ᑁ-ôᱥiòóᙠtÒ-1cô*æiḄijV2;C.ô*ᱥiḄijüJV2-V|.13.«iḄF*NOூÿ Ḅ Ḅ⚪⌕ὃᜩஹḄᵨᦪ Ḅ! Ạ⚪#%&Ḅᨵ()*+,-1/ᑭᵨᜩஹ12&3ᑭᵨ4567886⚓-ᐳ114⚓/
86-2/=)>?ᱥ2Ḅ⚪A-BC D/EFGHIE᎔DᡈL%&M=N⌕OP#ḄQRSD%&Ḅ&3TUVUMWὃXᵨᱥᳮZ [\▭^⚪Ḅ ,Q`Ḅa=bᳮ[ூd⚪eᔣ%&⌕ὃḄbgbgḄhᔠᳮjklḄmno᪵ᩭrsV>?Ḅet-BC DḄQuZḄ/Qd⚪Ḅᐵwx,ᙢz{E|ᨵᜧ`~&ᨵḄᱥ2=htᖪ~`ᐸaᓫḄῃDஹῃᩖஹῃᜐᳮ⚶✂ᵨᎷᑈ⁐{&Ꮙ¡¢ᵨḄetᩭ¤⁐{ᙢz{¥¦§2⁐{Ḅᙠ0.90g/cm3-0.93g/cm3²>ᙢz{Ḅᙠ0.94g/cm3-0.96g/cm3²>ᯠ¥a·¤,A.¹ᜩºᙠD»☢½¾¿ṹÁÂÃÄḄÅÆÇᜐÈÉᢣ┐ᙠᑖͽḄÎÏÐᵬᡠÓÔMX¾⊝Ö×ᔣÃ-⌱ٓÔᡈ“Ü”/Ý⁚ᜩ⊝VB.à〉᪵â{᎔ᐭäåᵨᜩ1äå᪵â{Ḅæ2mi,ÐèᡠÓmi=63gVC.ᯠ¾äåEëᑖ᪵â{᎔ᐭE1äåᒕí᪵â{Ḅæ2m2=25g,ᑣE᪵â{Ḅ2⊤ñ5òmi-m2VD.1E᪵â{Ḅ&3V,ÐõᡠÓVE.ᑭᵨᦪ÷671᪵â{Ḅp=ù25g/cm3VF.᪷÷71Ḅüýþ`ÿ᪵ᙢ⌱“”ᡈ“”ᑖ᪆1⁚ᜩ⊝ ᢣ┐ ᔣ!" #$ᜩḄ!&'( ⊝)*ᔣ+,Ḅ-&./2123᪵Ḅ456789ṹḄ56;<ṹ=>Ḅ?@ABCD6EḄᑖ@A ᪷GH☢=>Ḅ?@JK6EL᪵ḄMNBO⍝᪵Ḅ563MN ᪷GQ@RSTKU87⚓ᐳ114⚓
87᪵ḄQ@B᪷G⚪Yᑨ[ᔲ]ᙢ^1⁚ᜩ⊝ _`ᢣ┐ᙠᑖ@b᪗d+Ḅefhᵬᡠk ᢣ┐ ᔣᑖ@bḄ!" #$ᜩḄ!&'( ⊝)*ᔣ+,Ḅ-&./B2hlᡠk 123᪵Ḅ456mi=50g+10g+3g=63g,6EL᪵Ḅ56m=mi-m2=63g-25g=38g,hmᡠk 6EL᪵ḄMNV=40ml=40cm3,᪵ḄQ@p=%==0.95g/cm3BV40cm3᪵ḄQ@ᙠ0.94g/cm3-0.96ᡈ0?no ᡠpq᪵ᙢᦑsᫀ]-63B0.95Buvw⚪x⌕ὃ{Ḅ|}=ᜩḄ⁚3Jᦪஹ6EḄJᦪஹQ@RSḄᳮ^3 Ạឋ⚪ூ^⚪uHMQ@ ᐜ12Ḅ56 123HM456 ᨬHM᎔ᐭ6EᩭMN 12HM¡KḄMN ¢ £¤KḄHMQ@ ᜧBᐜᵨ6EKHMḄMN HM᎔ᐭ12K56 6EHM ¡KḄ56 ¢ KḄHMQ@ ¢14.§MḄQ@6¨©ூOªuḄ«ª6§MQ@Ḅ¨©¬Lᱥᳮ®⌕Ḅ¨© ¯ᜩḄ¡ᵨஹᱥM56Ḅ6ஹMNḄ6ஹQ@Ḅ7☢°±ὃ{.§MQ@Ḅ³ᵨᜩK§MḄ56m,᪷GµK§MḄMNV,ᵨRSK§MḄQ@B¶6·ᨵᜩ¹º»¼½¾pᑭᵨÀÁ®ÂᩭK56Bþpᑭᵨ7ᦔÅÆÇÈ8µ.ÉÊË6E Ìᵨ7ᦔÆÅḄ6ᱥMḄMNÍÎÏᵨḄ оpÇÈ8µ.ூÑ⚪ᔣ6§MQ@Ḅ³¨©ÒÓஹᜩ36EḄÔÕJᦪpÖQ@RSḄ×ØÙᵨ pÖ=¨©LK`ḄÚÛḄᑖ᪆ÜÂ.¶ÊËÝᐹ¹º»ßÑ⚪Ḅᐵá.â¢ãᑭᵨᜩஹµ312ᩭ6½äᑣ¢æᙽḄQ@ èéḄ¨©êë⊡ᐙî.U88⚓ᐳ114⚓
881ðᡲbᜩòᙠµó☢+ ᪗d+Ḅ<ṹ.ᑮõ?@ᜐ ⁚ᜩḄ⊝)*¡ᜩ⊝.2ᵨᜩ6¢æᙽḄ56 !bLḄ9ṹ3᪗d+Ḅ<ṹh1ᡠk ᑣ¢æᙽḄ56]62g.3h2ᡠka.û12L;ᐭ〉6Ḅµ ð¢æᙽý· ᙠµ☢ᑮþḄef+ÿ᪗b.ᙽḄ153gc. ᑮ᪗ᜐ!"#Ḅ183gd.&'ᙽḄ()30cn?..40ᵨ2345&'ᙽḄ23J_g/cm3.ᑖ᪆<.10=ᵨᜩ?@A✌ᐜDᜩ?Eᙠ?GHIṹKᑮ᪗LMNḄOP3ᯠRS⁚?⊝VW=ᜩ?ḄX?⊝..20ᱥ(Ḅ\]^ṹḄ Iṹ_`ḄP3a..30ᱥ(Ḅ()Ḅbᵨ\ᦔdeḄfg<ᱥ(hiᙠ ᑮj᪗kᱥ(ᑁ ᑮj᪗ᜐᱥ(Ḅ() ᐭḄ()n\.o⍝ ᐭḄ23q ᐭḄ()ᓽᱥ(Ḅ()..40o⍝ᱥ(Ḅ()᪷t2345qᱥ(Ḅ23.u<.10Dᡲwᜩ?Eᙠ?G☢Hy᪗LHḄIṹKᑮOP3ᜐS⁚ᜩ?Ḅ?⊝VW=ᜩ??⊝..20ᙽḄm=50g+10g+2g=62g..30ᑁ ᐭḄm=183g-153g=30g.ᑁ ᐭḄ()89ᦑᫀ<.10?⊝VW.2062.3030.402.1.<.10ᜩ?Ḅ=ᵨ⚗..20(23Ḅ ᱥᳮ¡⌕Ḅ£ᜩ?Ḅ=ᵨஹᱥ(Ḅஹ()Ḅஹ23Ḅ&'\f☢¥¦ὃ¨..30k©ª«#bᵨ\ᦔdeḄfgᱥ(Ḅ()¬®ᵨḄfg.ூu⚪fg±ᜩ?Ḅ=ᵨfgᜩ?ᱥᳮ³ ᨬµ¶Ḅ·ᐹᙠ=ᵨᜩ?¹ᱥ#⌕º»ᢥ᯿ᜩ?Ḅ=ᵨ¾ᑣᜩ??⊝ḄS⁚ᙠ¹ᱥḄARᨵÁÂḄfg◤⌕³ÄᱯÆ.ÇIṹ#⌕MÈÉÊËÌÍ(23Ḅµ¶ÎÏᐜ(ḄᯠR!().Ð⌕ᙠ2345Ḅ&'#ᓫÒḄÓᓄÕ᧕┯.15.Ø3Ùᱥ(ÚÛூoÜḄÝÜ.10Ø3⊤ßᱥ(ÚÛḄà᠒Î3.Ø3âᨵᜧfᔣØ3Ḅᜧ幓Ø᳛”.ᱥᳮ³ éᑮḄ“Ø3”êëᢣí#Ø3îï®ᡠðḄñòஹóôḄØ3õᢣ?ᙳØ3.ᙠ▭øù ᔜûüï·ᐹÚÛḄà᠒ý®þøÿᓄ.2ᡠᢣḄজᒴஹᒴஹᒴஹᒴ ঝ ᒴ ஹᒴ ூ!ஹ ஹᙊᕜஹ$ூ&⚪(ᔣ*⊤,(-.Ḅᑖ0.1⌕ᙠᒴ&⚪.416ᑡ8,ᱥ!:᠒Ḅᡂ=.>ᱥᳮ@8,:᠒Ḅ(-ABḄA.EᓟGB.ᜧJKLC.NOᵯQD.STUVWὡᑖ᪆*8,ᱥ!:᠒ḄᱥᳮZ.ᱥ!ᙠᓫ\]^_`Ḅabc*.defgᡂ=Ḅhi.ᯠkelmᔠ⚪oḄ⌱⚗.rAஹ“EᓟG”ᢣuvwx:.ᜩzvᓟG.mᔠ“ᓫ\]^_`Ḅab”Ḅᩩ|.}⌱⚗mᔠ⚪o ~90⚓ᐳ114⚓
90Bஹ“ᜧJKL”Jwᜧ.w:.Umᔠ“ᓫ\]^_`Ḅab”Ḅᩩ|.}⌱⚗Umᔠ⚪oCஹ“NOᵯQ”S.Nᔿᵯ᪵.Umᔠ“ᓫ\]^_`Ḅab”Ḅᩩ|.}⌱⚗Umᔠ⚪o Dஹ“STUVWὡ”Tᩭw:.ᣆὡᩏᩭUV.ᩭ.ᩭUV■ᜓ.Umᔠ“ᓫ\]^_`Ḅab”Ḅᩩ|.}⌱⚗Umᔠ⚪o.ᦑ⌱A.}⚪ὃḄ*ᱥᳮoiḄ¡.¢£¤Ạ¦¡.§*Uᜧ.¨⌕©eᳮrᡂ=Ḅhi.42ᵬஹ«¬]®¯v°±.ᔣ²ᒴ.³]´µ¶Ḅ\·¹ᡠº.¹z»e¼¬¾¿>]^ᐵÁḄᑖ᪆ᱥ!²ᒴ].abÂ]^Ḅ¹ÃÄᩩ`ÅḄ.ᵫ}ǦAÂB┯ÉḄᵫ⚪ÊḄ¹Ç¦ᵬ«]ᔣ.AḄ]^ᑁ.«ḄabÌ.«Ḅ*Äᜧ ᡃ¶ÇÎᙠCÂDḄ¹Ã.Ï°AḄ]^.ÐÑḄabÌ.®Òw°ᵬ«Ḅ»e¹Ã.rᵫ⚪ÊḄ¹ÃǦ«ᵬḄ*ᜧ.Aஹ¹Ã⊤º.ÓḼ]^ḄÕÌ.ḄabUḄ.⊤ºᵬ«☟×Ḅ.ᦑA⌱⚗Umᔠ⚪o Bஹ¹Ã⊤º.ÓḼ]^ḄÕÌ.ḄabUḄ.⊤ºᵬ«☟×Ḅ.ᦑB⌱⚗Umᔠ⚪o CஹᙠØÙÚÏ.⊤º]^AÛ ²ÜÙḄÝÞ.ÇαßᵬḄabÌ.àdá~91⚓ᐳ114⚓
91ᵬ:.ᦑc⌱⚗Umᔠ⚪o DஹᵨÚ☢Ḅ(-.ÇαßᙠAḄ]^ᑁ.«ḄabÌ.*ᜧ.ᦑD⌱⚗mᔠ⚪o.ᦑ⌱D.}⚪ὃḄᡃ¶£¹ÃḄᑖ᪆zä.åᐸab>]^¹Ãᱥ!*Ḅᑨè.ég§.◤⌕ëẚ.ூr⚪(-íîárᱥᳮ@(-4*ஹï*ஹðñஹò᳛ஹᵯKஹᵯò᳛Û⊤,-.16.*ôõVᐸöᵨூ¦¡Ḅ¡(1)*Ḅôõv=j_,ᐸv⊤º*,⊤ºab.t⊤º]^.(2)öᵨ:জùú`(ý⍝) ⚪⍝,ᜮᐭ⍝ᑮ⍝ ⍝,ᡠ ⍝ Ḅ!"#$%&⍝'()'*Ḅ+.ᜧ/01ᜧ Ḅ!"%&'2'.ᦑ4&5)ᨵ'*Ḅᱥ8 ⚪9:<ᱥ8Ḅ!"%&'(ᱥ85)'*Ḅ+.ঝ>? ⚪a.>?Ḅ@*⊤BCDE"FḄD@*ᢣ┐ᢣBḄᦪJK$LḄ@*JMᵨḄᓫPQkm/h.b.R"BᦪS⊤B$DEḄT!"UVWḄ!"%&XVWᑁZ[BᦪḄ\.c.>?ἠ^_`>Ḅ_ஹ<WW◞QDEWR"KXVWᑁ>?Ḅ!".ᑭᵨXdefg hi(>?ᨵᐵḄkl ⚪.m92⚓(ᐳ114⚓)
92ூt⚪uᔣmx0yὃ⚪ᵬ|ZᙢḄ~K900km,xᑡ_730ᵬᙢ>|ᙢ⌶F☠ [ᙠ1630ᑮ|ᙢ.ᑡDE⌶F 144km/hḄ@*ᒴ@'*Q400mḄᑡᐰḄWK25s.1¡ᵬᙢ|ᙢḄ¢ᙳ@*Kk¤ᓟ¦§9¨2¡Ḅ'*Kk¤¦¨ᑖ᪆1¡«¬ᵬ|ZᙢḄ~+ᵬᙢ|ᙢḄWᑭᵨ=¯ᓽg±ᵬᙢt|ᙢḄ¢ᙳ@*³2¡«¬@*+Wg+ḄT'T'´'KḄ'*.h1¡ᵬᙢ_730>|ᙢ⌶F☠ [ᙠ1630ᑮ|ᙢᑣᵬᙢ|ᙢᡠᵨWti=9h.ᵬᙢ|ᙢḄ¢ᙳ@*vi=-g-=9°°km=[ookm/h,%9h2¡Vv=XV2=144km/h=40m/stÀḄT~s—V2t2—40m/sX25s=1000m,Ḅ'*s=s-s=1000m-400m=600m.Â1¡ᵬᙢ|ᙢḄ¢ᙳ@*K100ᓟ¦§9³2¡Ḅ'*K600¦.ÃÄ5⚪ὃÅ @*ÆÇḄÈÉÊËᐰDEḄ!"Q'('Ḅ+KᐵÌ.mÀ0yὃ⚪D" ⚪9ᐝÎÏÐᙶUÒÓÔᩭÖᜱØÙÚÎÏÛÜÝḄWK720,ÞÖᜱØÛÜḄWK805,ÝÛÝD!"àQ396km.1¡ᐰ"ÝDḄWKk¤9¨2¡ᐰ"ÝDḄ¢ᙳ@*Kk¤ᓟ¦§¨ᑖ᪆1¡᪷^ÝÛÝW+ÞWᐰ"ÝDḄW³m93⚓ᐳ114⚓¡
932¡â¬⍝ÝDWᑭᵨ@*ÆÇ=¯ᐰ"ÝDḄ@*.th1¡᪷^ÝÛÝWQ720,ÞÖᜱØÛÜḄWK805g±ÝDWt=805-720=45min=0.75h,2¡ÝÛÝDḄ¢ᙳ@*Qv=ä=.æ528km/h.t0.75hÂ1¡ᐰ"ÝDḄWK0.75h³2¡ᐰ"ÝDḄ¢ᙳ@*K528km/h.ÃÄ5⚪ὃÅ çè4@*ÆÇḄéê+ëᵨì᪷^Ý+ÞW>ÝÛÝDWK5⚪Ḅíẚï.ூh⚪uðÃñòóô⚗1¡#ᵨv=¯ÈᓫP⌕÷x.sᵨ¦m¡,tᵨøs¡ùᓫP@*tvḄᓫPQ¦/øm/s¡³sᵨᓟ¦km¡,tᵨ9h¡@*vḄᓫPQᓟ¦/km/h¡.2¡v=W_ÆÇḄü[ᱥᳮþÿ ᱥ.t17.ḄூḄ1Ḅᐸᱥᳮ ᙠᱥᳮ !"#$%&'()*+.,ᵨᩭ/0ᱥ123᠒Ḅᱥᳮ5.2Ḅ78 9:ᵨ;94ᑖ᪆⚪ḄᐵḄ,ᜧK1pN30sᑁḄ#$,40m+260m,ᳮ.}~᪵9O&!ᡠḄ#$NV!ᡠ~Ḅ`]⌕NV,ḄV. si=40m,S2=260m,ti=30s,t2=24s S3 v=^~=40m+2601n=[0m/s,t[30sS3=vt2-si=1Om/sX24s-40m=240m-40m=200m. ḄV,200m. ⚪&⌕R ⚪ᨵ¢£¤ᩩ¦u5v30t,⚪Ḅᐵ⌕R §nᜧK1pN¨©ḄV.l2 «ᡠ?!¬N®ᙢᙠ°7#U±ᓭ³Hᔣᒴi´!µᑮ·Aᙢ&!NᑁḄ¹⊤º?v10hl5min,ᑮ·Bᙢ&,¹⊤º?v10h45min. 1¬NAᙢᑮBᙢᵨ£¿&'À2¬NAᙢᑮBᙢḄ.3Á¬NÂ~ÃÄÅᒴi´!Bᙢᑮᓭ³◤⌕£V&'Àᑖ᪆ ⚪ὃÈÉ78v=ÊᓽÌÍ8t=Ê!Îᔠ«ÐÑḄ#$ÓÔÕ~ᫀ.tv প¬NAᙢᑮBᙢᡠᵨ&'Øt=30min=0.5h2¬NAᙢᑮBᙢḄs=120-70=50km,ᦑv=_§_=&L=100km/ht0.53Á¬NÂ~ÃÄÅᒴi´!ᑣBᙢᑮᓭ³ᡠᵨ&'1=Ê=-7U=0.7hV100 1¬NAᙢᑮBᙢᵨ&30min 2¬NAᙢᑮBᙢḄv=100km/h3Bᙢᑮᓭ³◤⌕0.7h. áJ⚪âḄᐵ,9O«Ðã◤⌕ÓÔ!Îᔠ78ÌÍ8ᫀ.l3 ᵬஹåæᱥ+ᒴçè12!}é9OḄ#$()v3 2,ᡠᵨ&'()v2 3,ᑣ()vA.9 4B.4 9C.1 1D.3 295⚓ᐳ114⚓
95ᑖ᪆ ⌕ᑨî()!⌕᪷ð78C=Ê!ᵫ⚪âḄ#$ஹ&'()ᩭ().t ᵬஹåḄ#$()v3 2,ᡠᵨ&'()v2 3,ᦑ᪷ð78C=Ê!Õᵬåt()v3 2,ᓽ9 4.23ᦑ⌱A. ó⚪,ᵫ#$ô&'()!()!%᪵!õ,᪷ð78ᩭ.ூ⚪Hö÷⌕øù1ᵨḄ78ᐸÌÍ!ᑖJùúJ⚪â!£%ûüὶþ.`ᓭ³`ᓭ³120kmf70kmfII______________U_AB18.ᙳூḄ1Ḅ᠒ᓄḄ᠒ᓄḄ ᒹ ᜧ!"ᔣ Ḅᓄᵨ%ᩭ'()ᒴᕖᙠᓫ./0Ḅ1%2345Ḅ)%ᨵ78 79⊤1%Ḅ 89⊤;<Ḅ)=ᒴᕖᙠᓫ./0ᑁḄᓄ45)2ᙳᢣᙠAB/0ᑁ ᱥDḄ.E ᡠᵨ/0ḄGH IḄABKLMᱥDḄᙳ᠒.ᵨOPᙳ ᵨs⊤PKL ᵨt⊤P/0 ᑣᙳḄTUV=XூY⚪"ᔣᙳḄ[\ ᙳḄᙳḄ]^⚪XMὃḄY⚪"ᔣ.`1a᧽cᙠd᪥᧡gOhijkMl16sḄᡂopqrs tqᙠ50mᜐḄ6m/s,ᑮ}/Ḅ~7.5m/s,ᑣᐰLᑁḄᙳA.6m/sB.6.25m/sC.6.75m/sD.7.5m/sᑖ᪆aᵫ⚪᧽chijḄKL/0 ᵫᙳTUl[Ḅᙳ.96⚓ᐳ114⚓
96a᧽cḄhiᙳa.=625m/st16sᦑ⌱B.a⚪ὃ[᧽cḄhiᙳ ⍝Ạ⚪a⌕[ᙳ⌕KLᡠḄ/0 9ᐭᙳTU¡ᓽ ⚪/⌕£⚪¤ᡠ¥Ḅ¦§Ḅ¨© ⚪MᡠªḄ~«/ ᙳ¬ᐵ.`2a¯ ~ᳫ±A²³´ᑮFḄ⚣·᯿ᱏ º⚣·᯿»¼½◞0.2s·¿À ᑖ᪆aᳫ±AᑮFÁḄ³´⌱“ᒴ³´”ᡈ“³´”.ᳫ±BᑮFḄKL12.00cm,ᙳ-0.15m/s.|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||Ocm12345678910111213ᑖ᪆aÇÈÉÊ»ËḄ/00◞ᑁ ᳫÇÈḄKL ᑨᳫÍÎÏឋÑḄ.ÇÈÒÓÔÕ5ᳫḄKL ᦪᳫ0◞§ᦪÕ5ᳫḄ/0.᪷ØTUV=Ù [ᳫḄᙳ.taÇÈÉÊ»ËḄ/00◞ᑁ ᳫÇÈḄKLÚᩭÚᜧ ᡠlᳫͳ´.ᳫ±BᑮFÇÈḄKL~12.00cm,/0~0.8sᳫḄᙳÜ=Ý=° 12m=o15m/st0.8sᦑàᫀ~a³´ 12.00,0.15aâ⚪ὃᙳḄ¡lãätåஹឋÑḄᑨ çèᨬḄ¡⚪ê,⌕[dëìíîïð ñ¡.ூ⚪"\ò1ᙳóᵨᩭôᶍᙢ'(ͳ´ḄᱥDḄᙳ᠒L ÷óøÕ'(ᱥDᙠA/ÓᡈA.ùḄ᠒.2ᙳᢣABKLᡈAB/0ᑁᱥDḄᙳ᠒ ᡠl[ᙳ/5⌕ᢣúûBKLᡈûB/0ᑁḄᙳ KL!/0⌕.ᓽᙳüèýBKLÇÈýBKLᡠᵨḄþ/0ḄGH.3 ᙳḄᙳᐰḄᙳᔜᙳḄᙳ.97⚓ᐳ114⚓
97ᙠ ᓟ ⌕!.19."#Ḅ$%ூ'(Ḅ)(1!ᑗ,ᙠ-"Ḅᱥ/0ᙠ1231245-"45.“1245-"45”89:;“1245"#<ᜫ”>;1245?@-"ABᩭ-DḄ"#EFGHIᙠJKL.2!,ᙠ-"Ḅᱥ/M"N"NOM-"/P/ஹR/ஹS/0TU"N."Nᢣᐹ/Ḅ-"XY[ᙠ\] Ḅ"N8\[^_\"`.abcd᧕fḄ"Ng∭MḄ"Nῳj3klmnoᘤḄ"NqSr3ᔣᨨuvwxḄ"NqSr;Sᳫᰦ|Ḅ"NSᳫᕜ~ḄqS3ூ⚪ᔣ"#Ḅ$%'(ᓫvὃv~“12”dDq⚪cUᣚ;"ᘤஹᳫ#mὃ/12ḄஹᑮḄஹḄḄஹᳫḄ¡ᵨm.ூ£⚪¤1!¥¦g-"Ḅ"`ᙠ12-"Ḅ#ᙠ12-"Ḅᴊ¨ᙠ12…ª«¥¦¬®Dᑗ,ᙠ-"Ḅᱥ/0ᙠ12.2!ᣚg᧕¯°Ḅ±«᧕¯°Ḅ/Dᩭ.-"Ḅ#ᑮ12TU²«³´µᢞḄᳫḄ·2ᩭ/ஹTU²«x¸¹ºᩭ/»ᣚḄ¼½,ᳫᡈx¸ᙠvÀᑮÁÂÃ12ÄᜧḄ¡ᵨ.3!ᐵÇ-"È12ḄᐵÉᳮ£gজᑗ-"012Ì12ÍÎ[Ïᑮ.ÐÑᢈÓÔ-Õ0ÖᨵØÙ»12Ú8-"Ḅ3#ᡈÜ☢-" Ḅ12ᑮ◤⌕²«ᣚᩭ/gঝᑗ120-"Ì"ÍÎ[Ïàᑮ.12-"ᨵḄá"ᡈâ"ᙠ[Ḅàã~ᑁᦑàᑮ3ᨵḄ"#çèÃᦑàᑮ.20."#ḄKLᩩê98⚓ᐳ114⚓
98ூ'(Ḅ)((1)"#☠ïðKL.8ñKL"#ḄᱥðMòK"ḄïðᑗP/ஹR/ஹS/0TU¡;K"Ḅïð.(2)ôq8K".ôqõö☢Ä÷øḄஹùᨴḄûüᕒþÿ Ḅ.(3)ᙠḄ . ᩭ!".ூ$⚪&ᔣ)ᑁ+ᐭ-.Ḅ/0123⚪456752ὃ9ᳮ;/0<Ḅ=ᳮ>?.ᐸABC51D⚪EF675GHᐵJḄKLMNᨵὶQRS/▭ḄU⚪6WᴻஹZẈḄ\]5^.ூ_⚪&<5`(1)ᑨcḄd!ef6◞ᜋᨵὡஹjᵯlmnoMᵯpqrஹlᔥtrunoMvwxyno.(2)ᳮ;/099ூ$⚪&ᔣÙὃ51DÏ⌱Û⚪Ü3F⌕ὃ9\RÝᭆßàáḄGâÏãᵨᡠ\BCᩭ_åæ1RSḄḄçNoὃ9èᨵᐵḄÅÆÏxÇḄéêூ_⚪&<5`ë1ì340m/sḄᩩî215cḄy6ÐÑÏ©xᐸᦪðN©ë2ìᐝ"ᜧ6ᡠᐜóᑮôᵯ6õᑮöM÷øùtxúéx"óúûéxü0.294so22.ᙠ©Ḅ ÑூBC5ḄCë1ì¤ÿ ᙠᨬᜧᐸᨬ ᜧ. 2ᙠ!"#$%0.ூ(⚪*ᔣ 1᪷/#Ḅᦪ/2345. 2ᑭᵨᙠ#Ḅ#89:;<▭>⚪@ᙠ:ABᩭDE:FH:I:FJKLᑮN.ூ8⚪*OPQ 1RSḄᐵU45#VWXḄYᩈ[Vᱯ]ᡠK⊤`45a⌕c“:e ”. 2ᵫhᙠ#ḄḄ#:i,klmnḄopJ$Lᑮq.rDE:FH:I:FLᑮst:ᵫutvᵫDtsᵫ".✌ᐜyzE{⌕“r”ᐸyzEᑁᨵ~ᨵD.tsyzLᑮḄqV#Ḅ#V. 3ᜧ$ᜫᡠK$ᙢLᑮ.23.ḄᜧḄᐵUூPḄ 1 ᜧ."100⚓ᐳ114⚓!
100 2ᙠ"ḄV340m/s,Vᢣ15࠷a.ூ(⚪*ᔣὃPh8☢Ḅ¡ὃP¢K£"¤⌱¦⚪§¨©.ª⌕ὃ«¬Xᭆ¯45Ḅ°±¤²ᵨᡠ¬ᩭ89³¢´Ḅ©µḄ$¶.ூ8⚪*OPQ 1°·RḄᐵU45. 2ᙠ¸ᔣḄ*ᔣ¹ᢚ.»ᜩᙢ⊤▬¾ ᜧ "¿,ᔣÀ¹ᢚÁÂᙢ⊤▬¾¿ " ᜧÃᙢ⊤.ᡠK»ᜩ#ÁÂklÄ.24.ÅklḄÆᵨூPḄᙠ¸⍗ᑮÈÉᱥ⌕ËÌÍÎᡂ©µ.᪷/Ð:Ñ<,ᡃÓJK᪷/s=vtÅ ᜧÈÉᱥḄľஹØÙḄÚஹÄᜐÜÝḄkln.ூ(⚪*ᔣXÅkὃ«qKÞß⚪¤<à⚪ḄÎá]´âãXḼÝåæçèâãᑮÝåḄkléÅØÙêᜐḄÚᔣØÙᚖìËÍíî◤⌕⍝Ḅᱥᳮ¤◤⌕ŨḄᱥᳮ.ூ8⚪*OPQÅk◤⌕⍝ḄᱥᳮVᙠÐḄV,◤⌕ŨḄᱥᳮᦈᑮḄaôt.]@éÅØÙêᜐḄÚᔣØÙᚖìËÍíî◤⌕⍝ḄᱥᳮVᙠØDḄV,◤⌕ŨḄᱥᳮᦈᑮḄaôt.ᯠö᪷/5=”ÞßËᑮÈÉᱥḄkl aôtᵨaôô◞Ḅ:ù.25.úὡüḄ¸LᑮḄᩩþூPḄúὡḄ᪀⌼ὡஹὡஹᑁὡḄ⌶ὡ⍝-ᑁὡ"101⚓ᐳ114⚓!
101ᑮὡḄ ᡂḄ!ὡᦔ#$!ὡᦔ#%&'(☠!ὡ Ḅ*+ஹ +,⁐+ᑨ/01Ḅᦔ#.3ᡃ'56ᑮḄ789Ḅ:⌶%ᱥ<=>--?@--ABḄὡᩏ&5ᑮḄᩩEᨵG1.HIJ=>Ḅ⚣᳛ᙠ20Hz-20000HzN .2.ᨵḄ?@PQR3.ᨵABḄSூU⚪0ᔣYZ[⌱]⚪^P⚪&ὡ_`ḄabcᑮḄᩩE.dᡃ'56ᑮḄ789Ḅ:⌶%$3AஹABḄὡᩏ--?@--ᱥ<=>Bஹ?@--ᱥ<=>--ABḄὡᩏCஹᱥ<=>--?@--ABḄὡᩏDஹᱥ<=>--ABḄὡᩏ--?@ூe⚪0fghijeὡᩏḄk᪀ஹḄabcᑮḄᩩE.26.⚣᳛mnḄᐵpூ`qgḄrqnḄst7ᵫJ<Ḅ=>⚣᳛vw7ᱥᳮy7=>z᠒ᵨ}~=>Ḅᦪᩭ⊤7⚣᳛⚣᳛s7ns⚣᳛t7ntூU⚪0ᔣ⌕%ᑨᱥ<Ḅ%ᢣnஹ%⁐ᩭU⚪ᑖ`qn#ᵨdᔿnḄᓄஹᔣnḄᓄὃ¡^Pஹ⌱],¢£Ḅ⚪¤Z[ூe⚪0fghn%ᢣḄst7ᵫJ<Ḅ=>⚣᳛vw7⚣᳛%ᢣ}~=>Ḅᦪ¥¦kᔠ¨▭,«102⚓$ᐳ114⚓3
102ds7ᵱt7“s”,“t”ᢣḄ²%nᔣnḄᓄ7³ḼḄµ¶7·0ḄPQ¸7¹º⚣᳛Ḅᓄ7¹ºnḄᓄ27.»mூ`qgḄrq⚣᳛s&Ḅ¼·▲$¾20000HzḄ7».¿À7Á%Â⚣᳛t&ḄÃ⚣᳛ÅḄ.Ḅ⚣᳛ÅᜧÇ10-4Hz-20Hz. 1Ḅ:ÈÉÊË.ᙢ◫ஹÎÏஹ᪶ᰦÒஹÓÔºÕÖ5×Ø. 2»ḄÙÚÃÛÙÜݶ7ÁÞß·àáâ:.»Ḅãä5Så75ãäæçèḄéê.»ᙠë<:7Ãìë<ᑁ×ØíîᜧḄëïðñ.»Ã¡ᵨᩭᑴ⌼ᔜÂôõ7⚩÷ù7úIᙳᒴ.»ᙠýஹþᶭ ᨵḄᵨ.ூ⚪ᔣᑭᵨ ᐹᨵ ឋḄ"#ᱯឋ%&'()ᢈ+ ,-Ẇ/012⌕Ḅᵨ.467 89100mḄ:ᑡ<=>?Ḅ@ACA.ᙠ "EFG8920mḄHIJB. KLMNC.8O8 K)PQRSD. K)TSUᫀ9Bூ%⚪=WXᢕZ[ḄᱯW⚣᳛^ _ḄM`a▲Ac920000HzḄd9.edf@"g⚣᳛h _Ḅ M⚣᳛jḄ.Ḅ⚣᳛jᜧl910-4Hz 20Hz. mnZ"#'oḄᱯW6pqஹstஹsuஹv-wx ᡂz.6{ᯠ'o}~ᰦஹᔁஹஹ.28.■Ḅ⌶ூWḄḄ⌶61ᙠᜐ--62ᙠHI--ᔾ3ᙠὡᩏᜐ--◞ூ⚪ᔣ⌕ὃḄ⌶ ¡1¢£¤ஹ⌱¦⚪§¨'.©103⚓Aᐳ114⚓C
103ூ%⚪=WXP?@¬ᵨg⌶Ḅ46᥅ᡲ°±²ᘤᙠᜐ--^´⍝¶·¸¹º»P¼ᜋᙠHI--ᔾ;¿À_ᕒÂÃᨵὡÄḄᜮÆ,ᙠὡᩏᜐ--◞.29.[KÈூWḄÉ ¢H⌴KÈᙠËFHI"☢ÍËFFWᙠÎ⊝ÐÑ▬ÓÔÕÖ×)×KØ"☢eÍËF)ÙÚÛ ÜÝḄÞßÍËFᐹᨵàáḄâK.ã·äᑖKÈæ ç@ᵫ é×ÍËFêᑮḄKÈ.ூ⚪ᔣὃ"ì¢⌱¦⚪ᡈ£¤⚪¨'ᨵm[îïðᔠ¨⚪._òóᑭᵨH⌴îï KÈôõÐö÷ᙠᜧøaᕒúᔣøûüSý"õḄmþÿᑮᩭḄ.ᨵᙠᶭ☢.⌴ L.ᵨ#$%&'(Ḅ)*+M.ᵨ#$◀./0ᑁḄ23+N.#$56ᘤ.ூ9⚪;<=?@ḄABᑁCDEFᑮGHIᨵABஹᳮ9.30.ᐝᙠᙳᒴOPQRSTூUA<ḄVAW1YᐝᙠZ[\ᙳᒴOPQ]RSTW2Yᐝᙠ`0ஹa0ஹb0QTW3Yᐝ]RSTḄdefᙠZ\ᙳᒴOPQᐝḄRSTDgfᙠᙳᒴOPhijkfZ\OPlmnoᐝḄRSThDoᐝ]RSTW4Yᐝᙠq\ᙳᒴOPḄrs☢tf⌕vwᢚyḄz{ᐝDfRST|ூ}⚪ᔣ[}⚪ᐝTḄᩩfᐝᙠ[\OPQTḄᱏ|ூ9⚪;<=9⚪{⌕ᐝTḄᩩf9⚪Ḅᐵ“Z[ᙳᒴOP”fᐝ]RSTḄᩩ104⚓Wᐳ114⚓Y
104gf“Z[OP”Dᐝ]RST ᙢᳫᕜḄᜧbfDᙳᒴḄᙢ☢b¡ↈᜧb£yᑮᙢ☢Ḅᐝ¥vw¦§¨ᨌª«□ᙠᙢS®{ᡃ°±²|³f´oDᙳᒴḄᜧbµᐝS¶¦|31.·ᐝḄyᐝ¸ூUA<ḄVA᪷ºᐝḄy»¼·ᐝ¸Ḅ;fজᵫᐭyᐝSÀy☢ÁÂᐭy<ᐭy<[ᵨÃÄ0⊤Ç.ঝᵫᐭy<Ày☢ÁÂ;S;SᵨÉSÊË.ঞᵫᐭyᐝSÀ;SÁÂᐭyÍᐭyÍ[ᵨÃÄNiஹNaᡈN1⊤Ç.ট᪷ºᐝḄy¼ÁÂyÍyÍ[ᵨÃÄ/ÓஹN0ᡈN2⊤Ç.ঠᵫ;SÀyÍÁÂyᐝS.ᐝSᵨÕSÊËᐭyᐝSÀyᐝSḄÖᜮᔣ.ூ}⚪ᔣ·ᐝḄyᐝ¸fQὃḄÙ<. ÊËyᐝSÚḄᐭyᐝSAO,Þ᪗ËᐭyÍFᐸᜧá.ூ9⚪;<=9âãä⚪ḄᐵfåÁᳮ9ᐝḄy»¼.ᐝḄy»¼ᒹçq105ঞᙠᐝḄ8ᐝ(+9⌮Ḅ. ;+<=&'ᩭḄᐝḄ?ᔣᐭᑮ☢ᐝB&'ᩭᐭᐝḄ?ᔣC.32.☢ᡂEḄFᐵHIூKLḄ0KHIḄ? N416ᑭᵨ☢ᡂEḄᱯL426ᑭᵨTU436ᑭᵨᐝ(Ḅ9⌮ឋூX⚪?ᔣᐝḄஹ☢ᡂEḄHI⚪+8ὃḄὃ\ Lூ]⚪? L^416_ᐝNᑭᵨ`᪷ᐭᐝ_ᐝᡈ᪷ᐝbᐭᐝ+cẠឋ⚪e.426HᱥgḄEN᪷☢ᡂEḄ`436b☢ᡈ☢NᑭᵨᐝḄ`hᐝᐵib☢jk☢ᡂEḄIl8b☢Ḅmn.446bᐝpᡈᱥgmnN☢ᡂEḄ'ᳮ+ᐝḄ9j᪷ r'ᳮᙠ☢hᐝ(8bᐝpᡈᱥgḄmn.HI⌕tuNaஹwᐝLx☢yḄᐝḄᔣz{|x}~ELbஹwᐝLmnhEḄmnᚖ☢cஹ☢y☢Ḅᡠᨵ|+ᵨ~_dஹ ᵨ~᪗ᚖeஹᐝᜮ.33.HᐝḄᢚᐝ(IூKLḄ0KᐝḄᢚHI? N416ᐝḄᢚ426ᐝ(9⌮ឋூX⚪?ᔣᐝḄᢚHI+8ὃX⚪Ḅ⌕KL4lஹᐝHI6ூ]⚪? L^2106⚓4ᐳ114⚓6
106(1)ᑭᵨᐝḄᢚ`Nজᐝᐭ8ᡈᐸ8ᢚᐝᔣ ¡ᢚᐭᜧᢚ£ঝᐝᡈᐸᐭ8ᢚᐝ¥¦ ¡ᢚᢚᜧᐭ£ঞᐝᚖ§☢ᐭ¨©?ᔣªᦋ¬£ᐭ®ᢚ®0টᐝḄᢚ±²l³N´µ⇿·ஹ¸³ᔣᢚ¹ºஹ»¬“½”ºஹ¿ᜧஹÀ¥ஹÁÂஹ᯿FÄஹᢗÆÇஹÈÉஹὁËஹÌᙠ8Ḅ¸³ᙠ8ÍᑖÏÐᩭᔣÑ£ÏÒÓᑮᙢÕḄÖ□£ØÙḄṨÜÙḄÕ?(2)᪷ᐝ(9⌮Ḅ9⌮ឋ=ᐝ+ᵫÞßḄᐭÞàḄᕖâ_CÕIজᵫᑮঝᵫᑮ34.ḄᐝூKLḄ0K(1)⌕ãᐝÐäåHᵨ⌕ãᐝÐwᦣHᵨ.(2)ªç+è+}ᐝéḄᐝ?ᔣª¬.(3)⌕LNêᐝëḄᐝᙠã☢äåᯖLyíx}ᯖLḄᐝᙠã☢êᐝ먩.(4)⌕LNêᐝëḄᐝ}yḄᐝḄᔣz{x}~ᯖL.2107⚓(ᐳ114⚓)
107 ᐝ ᨵ !ᵨᯖḄᐝூX⚪?ᔣஹḄHI+8ὃX⚪ḄïL.l1IF+ḄᯖLᐸ8ðbḄᐝ(I+4!ᑖ᪆NòᩩᱯôᐝḄHINজõ}ᯖLḄᐝxᢚyBêᐝë.ঝêᐝëḄᐝxᢚyB}ᯖL.ঞ}ᐝéḄᐝxᢚy¨©?ᔣ2108⚓4ᐳ114⚓6
108ªᦋ¬.òᩩᱯôᐝḄHINজz{}ö÷ᯖLḄᐝxᢚyBêᐝë.ঝêᐝëḄᐝxᢚyᐸᢚᐝḄᔣz{}ᯖL.ঞ}ᐝéḄᐝxᢚy¨©?ᔣªᦋ¬.]NAஹᐭᐝêᐝëx}ᢚyᢚᐝøù}ᯖL.ᦑA┯û.Bஹõ}ᯖLḄᐝxᢚyBêᐝë.ᦑB┯û.CஹêᐝëḄᐭᐝx}ᢚyᢚᐝḄᔣz{}ᯖL.ᦑCðb.DஹãᐝᨵwᦣHᵨüI8ḄãᐝкäåHᵨᦑD┯û.ᦑ⌱C.LþNᐵhòᩩᱯôᐝNᔣörᯖLḄNêᐝëḄN}ᐝéḄ.ᐵ òᩩᱯôᐝḄὃ\+ÿ ᐭᐝᐝᡈὅ ᐝᐭᐝ.⚪ᐭᐝᐝḄᱯḄ ⚪Ḅᐵ .2!ᙠ#$ᐭᐝ%&'()Ḅᢚᐝ.ᑖ᪆!ᵫ#./0ᐭᐝ1234ᐝ5᪷7ᐭᐝḄᱯ/8Ḅᢚᐝ.!1234ᐝ5Ḅᐭᐝ%9&'(ᢚ)ᢚᐝ9ᯖᵫ /8;<=ᩩᐭᐝḄᢚᐝ.ᦑ#A.B!ᐵ3&'(ᨵDᩩᱯEḄᐭᐝ!জ1234ᐝ5Gঝ9ᯖ!ঞ9ᐝJḄ.KᩩᱯEḄᐭᐝḄᢚᐝLᨵMNḄᱯ.᪷7OὅḄᐵP/8 ᐭᐝQᢚᐝGR/8ᑭᵨᢚᐝQḄᐭᐝ.ூ⚪VWXZ'(ḄᱯEᐝḄᱯ!3&'(1234ᐝ5Ḅᐝᢚ)9ᯖ9ᐝJḄ[109⚓]ᐳ114⚓_
109ᐝabVᔣdeG3f'(1234ᐝ5Ḅᐝg9'()ᢚᐝḄhᔣij9klmᯖ.n/8⚪.35.&'(ᡂpqrsᐸuvwxூ0yḄzy1&'(ᡂpqr!ᢣᱥ}~ᙠᯖᙠ&'(klmᡂ᎔Ḅwpwpᨵஹᜧஹ~ᜧD.ᱥpᜧwpᜧ.ᱥ}~ᙠᯖᑁᙠ&'(lmᡂ~ᜧḄp.ᱥpp.22wx!lஹ⚪!&'(ᡂppḄᜧஹ᎔ஹwᱥᨵᐵPஹwxᘤᩞ!Ḅᐝᐹஹ∑¡ஹᐝ¢ஹ'(]ᯖᙠ10 20cm£_ஹ¤.¥wx¦§#.Dஹwx¨©!1ஹᐜ«'(Ḅᯖ!&'(ᙠ□ᐝAᩭ®¯°±Ḽᨬஹᨬ´Ḅᵨ¤µ´¶&'(Ḅ·n¸&'(Ḅᯖ.2ஹwxu¹pḄᜧஹ᎔ஹwᱥḄᐵP!ºVᫀ¼জ'(~ᙠᐝᐹ᪗¤$¾¿'(ḄÀ§ÁÂᙠÃÄOÅḄ᪗¤ÆᵨÇÈ᪗3ᯖ2ÉᯖḄÀ§.ঝÊ∑¡ËÍÎḄÏСᯚஹ&'(ஹᐝ¢Ḅ$JᜧÒᙠlÏ.ঞ∑¡~ᙠ·&'(ÓµÔḄÀ§ÆËᐝ¢ᑮ'(Ḅ·Ð¡ᯚᙠ¢Æᡂl¸ÖᨎḄpØÙpḄᜧஹ᎔«∑¡¶&'(ஹ&'(¶ᐝ¢£Ḅ·.ᦪ7ÛÜᙠ⊤Þ$.টàá∑¡ᔣ&'(☠ãØÙpḄeᓄ~ᜧåå᎔∑¡¶&'(ஹ&'(¶ᐝ¢Ḅ·«æᦪ7ÛÜᙠ⊤Þ$.ঠè∑¡ᑮl<À§Æᐝ¢éᨵpᵨêëìíḼ&'(ØÙ∑¡Ḅp∑¡¶&'(ஹp¶&'(Ḅ·p~ᜧåḄpḄ᎔îᐭ⊤Þ$.ᱥUp᎔ᜧwᵨᱯᱥpḄVÀ§ᐵPu>2f2f>v>᎔wp᯿ðñஹpñ-ᱥpómf[110⚓]ᐳ114⚓_
110u=2fv=2f᎔ᜧwpô;«ᯖõᡂpᜧḄᑖᱥpómö2f>u>fv>2f᎔~ᜧwp÷øñஹᵯúஹᢗ-ᱥpómúõu=f---dᡂýᐝþᯖÿᵯᡂḄᑖ-pf>uv>uᜧᜧᙠᱥᱥᙠᱥூ⚪ᔣ ᡂ !ᐸ#$%&'ὃ⚪Ḅ).+,-./ᵨ12ᯖ456Ḅ ஹ∑9ஹᐝ;ஹᐝᐹ=#$ ᡂ :?1AaB6CD Ḅᯖ4&11cm.?2AbᡠFCGᙠᐝ;H?ᐝ;5IJKLMᑮOᨎᜧḄ9ᯚḄCᑣ∑9BLST UVaஹbஹcஹdW'ḄcH P&D Ḅ2Xᯖ4ᜐKCZᡂᱯB\ᵨᙠᢗ^_H.?3`a%C-.bc∑9d efCᐝ;HMᑮḄOᨎe-?g“ᜧ”ᡈ“-”K.k∑9ᔣ ☠mnC⌕ᙠᐝ;HᡂOᨎḄCᐝ;\fd ?g“☠m”ᡈ“fd”KCZnᙠᐝ;HᡂḄOᨎ&᎔Ḅ?g“᎔”ᡈ“”K.?4%'Cᐝ;HrᡂOᨎḄஹs-ḄCZn-.tu∑9v Cᙠᐝ;v wHxyᡠzᡚḄm|}CG~⌕ᙠᐝ;HᡂOᨎḄCᑣ◤ᐝ;ᔣfd?g“☠m”ᡈ“fd”K ḄᔣCZnᡠᡂḄOᨎ?g“”ᡈ“”K.111⚓?ᐳ114⚓K
111ᑖ᪆,?1K Ḅᯖ4&TᐝḄᐝḄᑮᐝḄ4d?2K᪷ ᡂḄᑨ,u>2f,ᡂ᎔ஹs-Ḅ.2f>u>f,ᡂ᎔ஹᜧḄ.u2f2f>v>᎔s-᯿ÜÝஹÝ-ᱥßfu=2fv=2f᎔àᜧáâãᯖ_ᡂᜧ-Ḅᑖᱥß112⚓?ᐳ114⚓K
1122f>u>fv>2f᎔ᜧäåÝஹᵯ^ஹᢗ-ᱥß^_u=f---æᡂçᐝᯖèᵯᡂḄᑖ-f>uv>uᜧᜧᙠᱥᱥᙠᱥூ⚪ᔣᑭᵨ ᡂḄ §⚪.+1:ACê&1ëìῊÑîï1ÝC`aᜮᣓᣍìῊóôCÊᡠõAö±¤÷ᦪù'⚜ᐜüᐭḄìῊ᯿ᱏÿ .☢┯ḄA.ᜮB. ᜮ ᵨᩭ!"#$%C. ᜮᐝ'ᐹᨵ*+,ᵨD.-ᜮḄᯖ/010cm,012ᡂ4ᨎḄ67ῊᑮᜮḄ/:;ᜧ20cmᑖ᪆?@ᑭᵨᡂ᎔CஹEFḄGḄHᳮᑴᡂḄ6U>2fKஹLᡂ᎔CஹEFḄG.M?1@ḄᜮNO6ᐝ'ᨵ*+,ᵨ6ᑭᵨ1U>2fK6ᡂ᎔CஹEFḄGHᳮᑴᡂ.Ḅᯖ/10cm,7ῊPᜮḄ/:ᜧQRᯖ/6STᜧ20cmK62ᡂ᎔CஹEFḄG6ᦑ⌱⚗ACD"X.2!"#$%ḄᱏZ6[6ᦑB┯.ᦑ⌱B.\]?^⚪ὃa1Ḅᡂᱯ\P;ᵨ6⌕deᡂḄfg6h4i jkḄ;ᵨ.ᙠmnopq⌕ᗐstஹuvfg6mḼxᡠmz{|}~G▭ὶᩭ.ூM⚪\{ᡂḄfg6ᮣ~M⚪.113⚓ᐳ114⚓
11337.#$%Ḅᡂ|!"ூz{\Ḅ{%ᳫᙠ⁚☟Ḅ6ᩭ5Ḅᐝ'o%Ḅ¡ᐝ¢6ᯖ\ា¤¥ᙠ$¦§¨62©ᡂ4ᨎḄ6ᐹᨵ ¡ᐝḄ%ª0"$%.ᐸᯖ\¥ᙠ$¦§¬6[2Xᙢᙠ$¦§¨©ᡂ4ᨎḄ6ª0¯ឋ#$.ᩭ#ᜐ²᪗Ḅᑖᦣᐝ'ᓾᐹᨵ¶·〉;2¹6º⌕²᪗ᔣ%¬¼½ᑮN¾/:6T2¿À4ᨎḄ$¹.ᡠ6#$%Á#/:²᪗4ᨎ6ÁÂÃÄ6Zᳫ☢ !".ூÅ⚪ᔣ#$%Ḅᡂ|!"Å⚪Ḅz{\6NÆ⌱Ç⚪ஹGÈ⚪Ḅ©ÉÊË.ூM⚪\ᢕÍᐵÏ{?1#$%?ᨔÒ·oᜧᡈ%ᳫ¬¢ÔoÕ6ÖᱥÒḄᡂᙠ$¦§¬.2!"?ÙᡚZ6Ûᐭ%ÝḄᐝ'ÞᦣNߢàáoᨔÒ6Ûᡂᙠ$¦§¨.114⚓ᐳ114⚓
