2020-2021学年江苏省盐城市阜宁县八年级（上）期末物理试卷

《2020-2021学年江苏省盐城市阜宁县八年级（上）期末物理试卷》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2020-2021
ḕ
ᱥᳮᔁஹ⌱⚪ᜧ⚪ᐳ12⚪⚪2ᑖᐳ24ᑖ⚪"ᨵ$%&Ḅ⌱⚗1.2ᑖ,ᑡ./0123456ᵨḄ8A.;<᪶ᰦ?B.BSC.4ᕊ

1
ᨴA.ᔣ¤¥¦§2ᨴ¨ᔣ^_B.ᨴ¨ᔣ^_¦§2ᔣ¤¥C.dᜧᙢgh᯿ᱥᔣ¤ª£ᡂᨴ¨ᔣ^_D.dᔣ¤¥Ḅ¬h᯿ᱥᨴ¨¦ᔣ^_5.2ᑖᓟ
ḄI¯ᦻ±²⌼n´ᦪḄ¶·¸¹,☢8ºj»¼½ᑖ¶¾0ⅾÀḄᱥᳮÁÂḄᳮÃcᐸ0%&Ḅ8জ“yᦢÇ4ÈអÊᜩw”--“Ç”8ᢣ4ÎḄᱯГÑÒ”ঝ“☄ÕÖ×ᨴÕØ”--☄.▭8Ú×8ᵫÜᰚᓄÞᡂঞ“w☢᪻áâ᧜ä”--᪻á8ᐝåæçḄäᐝ᧜änwḄῊট“êëᱏíîᩭ”--“êë”^_8dðgh᯿ᱥḄ஺A.জঝB.জটC.ঝঞD.ঞট6.2ᑖ᪷ò0ᡠHóôõöᙠ᪗øᜧùú,Ḅᰚûᓫjc࠷`aᑨ\,ᑡ£þ%&Ḅ8õ᝱⏀
᝱-117-39489621064A.᝱ḄB.ᙽᣵᐭᰚᓄC.⏀
ᙠ-117࠷-᝱D.ᡃᓅ!"#-50࠷,$%!&"⌱()*7.2ᑖ,-./01ᐵḄᱥᳮ%5$ᨬᔠᳮḄ8,A./0Ḅ:;<=38࠷B.>?@A—〉ḄD᛻FGH=90dBIlOOdBC.JK/0LMN)<=8m/sD.ᜮPQḄRS<=70Hm8.2ᑖ,?ῊUVWXYZ[ᙢ]ᵨ_ὃaஹcἭஹefghiKjkᑵῊmnᜮᣓᣍ

2ᑮ?Ὴrsh.WXtuḄ?ῊvwxyhzM?ῊUV஺ᑡ}~:Ḅ8,A.ᑵῊmḄnᜮ1_nB.ᑵῊ&h☢KjᑵῊmḄnᜮᡂḄC.ᑵῊ&h☢]_ᑵῊmnᜮḄᯖ᜜D.ᑵῊ&h☢KjᑵῊmḄnᜮᡠᡂḄᙠᯖ-ᑁ9.2ᑖ,᝞ᡠhkᐭhᩭP0ᢚ஺=8,A.ᐝ¢£ᐭ¤!h¥¦ᔣᦋ©B.ᐝᙠ¤!ªḄᑖ«☢P0¬£C.ᐝ¢¤!£ᐭh¥¦ᔣ®©D.ᐝᙠ¤!ªḄᑖ«☢P0n☢£10.2ᑖ,ᢗ°±ᦟ/ᵨḄ±ᘤh᝞ᡠᢗ°±Ḅ´᪀hᙠ¶·Ḅ¸nḄ:¹ᨵ.¶☢ᡂ45°»Ḅ¶☢nh¼½¾R¿À•ᱥ;PÂḄᐝÃÄj¸nª¶☢nÅh"ᙠ¿¹ᡂÆᨎḄ஺ᦟÈᙠÉᵨᢗ°±&hPÊᙠ¿À¹ḄË☢ÌÍh:ḄÎ⁚~8,A.ÐÍᢗ°±.¿ÀÑḄÒhθnhÐ͸nᑮᱥ;ÑḄÒB.ÐÍᢗ°±.¿ÀÑḄÒh¹Î¸nhÓᜧ¸nᑮᱥ;ÑḄÒC.Óᜧᢗ°±.¿ÀÑḄÒh¹Î¸nhÓᜧ¸nᑮᱥ;ÑḄÒ

3D.Óᜧᢗ°±.¿ÀÑḄÒhθnhÐ͸nᑮᱥ;ÑḄÒ11.82ᑖ,ᵬஹÖ×/ضRÙ☢LMhÚÛÜÝḄÙÞß&Ñ©ᓄḄàá᝞ᡠ,B.4I8sᑁhᵬÖ×/ãäᒴNRÃÜÝC.0I8sᑁhᵬÖ×/KjḄÙÞ1gD.8sæᵬÖ×/N)1g12.2ᑖ,ᨵçᱥᳮ%ḄᜧÍ®᧕Réê$hëi©ᓄ&ìᐸi%Ḅ©ᓄᓾï᧕Réê$hᵨ᧕ê$Ḅ%ð®᧕ê$Ḅ%Ẇòᱥᳮó⚪Ḅõ~hö᝞÷PFḄøùḄúÝ"-Kjûüᩭ;Ê஺-ýöþᵨḄẆò~.¹ÿ
ḄA.ẆᐝᐭᐝᵨᩭᐝḄᔣB.Ẇᰚᓄ!ஹ⇾∑Ḅᰚᓄᱯ&C.'()*+ᑭᵨ'-.*Ḅ/ᓄᩭ01)*23D.Ẇ4☢6ᡂ89:8;ᱥ(Ḅᜧ>⌱ᵨ@AḄ∑BCஹDE⚪Gᜧ⚪ᐳ8>⚪ᐳ24ᑖ13.3ᑖ1
᝞Kᵬᡠ1ᡠNᱥ(O.9cmP2
᝞KQᡠ1R⊤Tᦪ9sP3
᝞KVᡠ1TᦪWA/B/C
XYḄ஺

414.3ᑖ1
᝞Kᡠ1[\]□ᐝ_`ab6cᑮefgᙠᐝfgijᡂ[ᩩl⁐ᐝno஺pᙠefgq[rstᑣᐝfgvwxᑮᐝ஺2
ᙠyᨵᘤᩞ}ẠgNᐹ,s᜜Ḅᦔ஺3
ᵯW⍩ᘤ_`ᵯWḄᑴ■᧼ᑣ9:■_______`᯿c£(⌼ᡂ¥¦஺15.3ᑖ§¨©ᜩ᩽¬Ḅᜩ®᪥⌕±²gᨚ´µᙢ஺o᪵¸Ḅ¹Ḅ■º»Dᱥ᝱/ᓄ½¾¿À®Áᤶ᎔Ä¥஺Åg᜜☢)ÆDzg>ÈÉᑮÊᡝgÌÍg[Î!ÏoÎ!ÏÐᙠÊᡝÑᴻḄ⌱D“ᑁ”ᡈ“᜜”×ØÙÚᑮÛ᜜Ü6g⌱D“Ì”ᡈ“ÝÌ”Ìℳg[κß஺16.3ᑖ[à᝞Kᵬᡠ1Ḅáâãᙠä☢g஺>åæ[çèºḄÑᴻéêᙠáâëì᜻ᙢ»îï`ºéÉᑮáâḄὁñ/“ò”:ᣵᜮᝂᔣö᝞KQ஺>åwxᑖ᪆îèºḄᙊ-jÑᴻéùᑗ☢ûüOýↈÿᑮ“☢”ஹ“”ᡈ“”Ḅᵨᱏᔣᜧஹ᎔ᑮḄὁ"Ḅ“#”ᡈ“$”%&'ὁ"ᑮ(ᴻḄ*+,-“f2f”
஺

5ᵬ17.3ᑖ“ᢘ6”App9:;<=Ḅ>?“ᢘ6”Ḅ@ABCDEᑴḄ6⚣HI⚣JApp>?K3LḄMNOMPQRᑮ“S”ḄTḄ&'UVḄ⚣᳛XYCDU6Ḅ3Lᑣ“ᢘ6”Ḅ6[\CDU6Ḅ⌱“^”ᡈ"`”ὁabc'defᐵfᡈdhU[ᡂjkTḄYlᙠnopU஺18.3ᑖrsṹᙠuvwxyzᜐ|}ᡃ}rsṹᵫᐝᙠrsṹᫀbwl⌱“”ᡈ“ᢚ᝞ᵬᡠefrsṹrsṹl9᯿ᱏef᤬%ᜮ%ᘤᐝ⌕brsṹḄ%ᜧ◤Brsṹ⌱“☠¡”ᡈ“¢+“ef᤬%ᜮ஺᝞£ᡠ'¤¥¦ᵨ§ᩚ᯿Ḅ©ª«¬®ef§\ᵨ£§ᩚ¯ᜧl⌱“%*”ᡈ“ᱥ*”஺ᵬ19.3ᑖ²³H²´µᔠ·¸¹º┵¤¼MNḄ#½'B¾¿ÀᜧḄᙊºᱏÂÃᜧ²ÄÀḄᡧÆ·ᡂ¾¿┵ÇÄÀḄº┵᝞ᡠ஺1#▭#½uº┵¤¼Ḅ'É/ËÌ\Íθ¹YlÏÐ#½¸¹ÑÒ⌱ᵨº┵┵ÇÍᜧ/ͲḄº┵஺2¾ÔÕÖ×غ┵ÙÕ9^N¤¼ḄO᠒|«º┵Ḅ┵Çஹº┵ḄA¹ᨵᐵÜ

6ᡭÞßàᵨyḄ᾿º┵Ẇãº┵¤¼O᠒«┵ÇḄᐵä²åæYá᪵·ÄèÖ,ᐸëì20.3ᑖ§ᑴ┐î᯿fᙠ᜜ᝅñḄ9òℳbôîḄõºᵬᙠᑁᝅñᶍ²Ḅ9òℳbᛛᧇↈûᐝ£dᑁᝅñüᐭ᜜ᝅñyþ஺ᵨ┐î᯿f',²îÿḼ⌱“Ḅ᜜”ᡈ“ᨩḄᑁ”ᙠᐝᡂḄᱥḄ⌱“”ᡈ“”ᑁᝅ!"#$ᑮḄ⌱“&ᜧ”ஹ“)&”ᡈ“&"*,᜛ᝅᛛᧇↈᑁᝅᵬ+ஹ,-⚪/ᜧ⚪ᐳ9"⚪ᐳ52ᑖ21.2ᑖ᝞3ᡠ5S678ᐝ9S:ᙠ;☢=>ᡂḄSAS8?Ḅ6@ᐝ஺Bᙠ3>C?;☢=ḄDEFSAG;☢=HIJḄᐝK஺22.2ᑖLᨵNḄOPQRᨵ6STUA,VWᙠBᜐ$ᑮTUḄᙠCᜐBC?YV$ᑮTUḄᐝZ3஺B

723.(2ᑖ)Bᙠ3>C?ᐭIᐝKGabc=JḄᢚIᐝK஺24.(9ᑖ)g╋ijDklmḕ>ᓅRᓅpgqrsᔣᓭGvwஹxysza{lJᑮ|╋ls}ᡂ~lmḕmᓅஹm>ஹmᓭᙢḄ>jZ⍝஺ᐰK{304.5᪗K250ᓭ▭ᑡK2¡,2020£12ᨴ10¦18¨©ªἠ᝞⊤{215mḄC3666/3/6²▭ᑡ³´ᑮᓭḄRᑖµ¶⊤஺·¸´¹ºᓭ...╋lᓭᑮ·¶07¼538¼03...10¼268¶07¼3907¼558¼05...(1)▭ᑡᵫᓭ¾¿ᓭᡠGaḄZÀÁÂkmÄ(2)Å▭ᑡ³ᓭᑮ╋lGaḄZÀ475km,ᑣ╋l·Ḅᑮ·¶ÁÂÄ(3)Å▭ᑡ⌶G6È{7285ÉḄᜧ᫑ᑣ▭ᑡËᐰaᜧ᫑ᡠ◤⌕ḄÎÁÂs?25.(4ᑖ)ᙠ“ÑÒᐝḄHIÓÔ”ḄÕ>᝞3ᡠ5;☢=M×ᙠN;Ø☢EஹFÛᙽÝÞpᩭḄTàáᚖãk=☢äåONèé஺(1)᝞3(a),ëEஹFᙠì6;☢íᐭIᐝKAOïàáEIᔣ=☢ᙠFð$ᑮHIᐝKOB,ò?ᐭIóFHIóḄᜧ"ôõᓽ÷?Õøù¼HIóúkᐭIóûüý᪵÷?øù(⌱“ᔠᳮ”ᡈ“ᔠᳮ”)஺(2)ᐝḼFBOᑮ஺ᐝḄ"ᔣ$%ᙠᐝḄ'()ᐝ*Ḅ஺(3)᝞(b),/01ON%314Fᔣ56᠒89ᙠF:(⌱<“=”

8ᡈ“=”>?ᑮ'ᐝ1OB,@A'ᐝ1Bᐭᐝ1D01ONᙠEF/F>H☢ᑁKLM'ᐝE⌱<“NᯠPᙠ”ᡈ“Pᙠ(b)26.E7ᑖ>UVWXYḄFZ[\“]^_`aMbcdᓄḄᱯ”gh஺E1>᝞ᵬᡠlmnghnoMpoqrsḄtᙌvowxᢞbczḄtᜳvo|}~⌕ᐜ᦮ḄvoE⌱<“tᙌ”ᡈ“tᜳE2>AmFZᙠghMbczḄlᦪLM_Ḅbc°C஺E3>᝞⊤ᙠghFMḄbcAmḄAᵫᜧ┯ghᦪ%┯Ḅᦪ࠷,᪵ᑨ£ḄNM¤.67891011121314/minbc969798989598989898•••/࠷gh(_«_«_«_`_`_`_`_`_`_`)`a`a`aaaaaaaaE4>AஹBmFZ⌱ᵨḄghno¯FḄ°_±²ᑮ`aᡠᵨḄM¤ᓾF´µ¶ᑴḄ`a)᝞¸ᡠlaஹbº)FḄ»=Eᑏ$ºᓽ»>஺

927.E7ᑖ>Aᵨₐ⁐Àᴻw¯FḄÂÃÄ]^ÅBᱥᑮH☢ÇÈÉᐵËḄgh஺E1>ÀᴻÌᙠ_HÍ☢:ᙠÎ:ÀᴻÏ5⊤☢Ð1MM'wNN'KE2>ᙠÀᴻÏpÂÃA,ÂÃBpᑮÀᴻ5ÓÔB_______~ᔠ;E3>⌱ᵨ×ᐰ¯FḄÂÃ%ÙÚḄᐵËKÞᦪ12345lA/cm4.305.707.108.809.90ᚈ/cm/5.406.808.509.60E4>ᙠÎ:ÂÃAwBḄÛÜÐᙊ,ãäAḄåæᑮMM'ḄÈÉl=4.30cmKAãäBḄèæᑮNN'ḄÈÉ᝞ᵬᡠl,ᐸê%1B=cmKE5>ÙÚ1Bw1Aë(1Bì1A%íîïðghñòóôAghḄ┯õö[\÷ø஺ùúKE6>ûᵨ᝞ᡠlḄ"ü[\ghýᜐ:᝞
ᡠᙠAᜐᙠBᜐᑮḄᙠa/b/c/dᜐ஺28.9ᑖ%&'%()*“,-./0ᡂ23”56஺

10719:;<ᡠᵨ./0Ḅᯖ?%&/0@ḼB□᝞
ᵬᡠEFGHIJKᑮGHL

1129.10ᑖ▅ØÙᦻÛÜᦻbÝ⚪஺Îß¿Î0ḄàᦪBCD᝞
ᵬ^âḄÎßḄ᪀
äå{æ᯿Áçᡃéᱥë^ìíîïëḄð¤ᩭx⁚ᨔïëḄóôõàᦋ½ᨔïëḄᯖ?iÓÕḄᱥëöᙠ?ÁḄÖ÷øLùᡂᨎḄ᎔£5஺îïëúᨔïëↈ@ᐝḄüᢚþ½%ÓᜐᱥëÿᩭḄᐝᙠᳫᜐḄᱥᦈᨔ!ᐝḄ"ᢚ$%ᜧ'ᜐᱥ(ᩭḄᐝᙠ)*'ᜐḄᱥ஺,-'ஹᡠ⌼ᡂḄ%234ᡚ6஺789:6ᯖ<=>?ᓫABḄ᎔ᦪEF:6ḄᯖGᵨI⊤KᓽI=N஺᝞PQf:6Ḅᯖ

12B.:6Ḅᯖ<¯¦ᯖG¯ᜧC.:6Ḅᯖ<¯±6ᱏḄGᦪ¯²D.:6ḄᯖG¯ᜧ6ᱏḄGᦪ¯²(4)¢³´46Ḅµᐝᓫ¶·᪗¹ºᯖG-3.00,»ᯖG-2.75,,-%1.0,ᑣ¢³,-%◤⌱ᵨ¿ÀIḄ(ÂÃ):6»ᡠ46ᱏḄGᦪSG஺(5)¢³Ḅ᱅᱅4Ḅ6?+400GYḄᯖ

132020-2021´ÌÍÎḕÐÑÒÓÔÕÖÌ×=BØÙᱥᳮÛᔁὃᫀ⚪"᪆gஹ⌱Ý⚪=cᜧ⚪ᐳ12¢⚪à¢⚪2ᑖᐳ24ᑖà⚪âᨵg-äḄ⌱⚗B1.2ᑖBªᑡæoIçèéêeᵨḄS=BA.ëì᪶ᰦïB.BðC.éᕊìò<óD.ô6ூᑖ᪆௃èéSᢣù20HzḄéúðéSᢣ²20000HzḄéú஺ூûü௃ûýAஹ᪶ᰦïþÿḄ
ᡠ᪶ᰦ
ḄᵨᦑCᔠ⚪BஹB
ᑭᵨᩭḄᦑBᔠ⚪Cஹᕊ
ᑭᵨᩭḄᦑCᔠ⚪Dஹ!"#
ᑭᵨᩭḄᦑDᔠ⚪஺ᦑ⌱&A஺ூ()௃+⚪Ḅ,⚪ᐵ.
/01Ḅᵨ⌶345ᓫ⚪஺2.2ᑖ8᝞:ᡠ;<=><ᐝᙶᙠBCᑁEFᑨHIBḄJKLM஺<=&N᜜ḄKBPQ᯿ᱥIBḄTUVᓄXYZIB
JKḄ஺<ᐝ&N᜜Ḅ[\PQ᯿ᱥ,IBḄTU^ᨵVᓄYZIB
☟aḄ஺bᑨHc8A.<=efB.<ᐝefC.ghiefD.ghiefூᑖ᪆௃ẆlᱥmḄJKnopqᐜ⌱stu᪗wḄᱥmxuqᐜy⌱᪗wḄᱥmzQ᯿ᱥ஺᝞{yẆlḄᱥm|}4xu᪗wTU~XᦋVᑣ
JKḄ᝞{yẆlḄᱥm|}4xu᪗wTU^ᨵ~ᦋVᑣ
☟aḄ஺ூ,௃,&ᑨHtuᱥm
JK
☟aḄ&᝞{yẆlḄᱥm|}4Q᯿ᱥTU~XᦋVᑣ
JKḄ᝞{yẆlḄᱥm|}4Q᯿ᱥTU^ᨵ~ᦋVᑣ
☟aḄ஺

14ᡠN᜜ḄKBPQ᯿ᱥ᝞{IBḄTUVᓄXᑣIB
JKḄᦑ<=ḄᑨHef;᝞{N᜜Ḅ[\PQ᯿ᱥIBḄTU^ᨵVᓄᑣIB
☟aḄᦑ<ᐝḄᑨHef஺ᦑ⌱&Coூ()௃ᐵ4JK☟aḄ|}ឋḄὃtᵫgὃ&জẆl}1ᐸJK᝱⌱Q᯿ᱥঝẆl}Q᯿ᱥfsᱥmJK᝱஺3.c2ᑖ8ᑡ¢£34ᐝḄ¤¥Ḅ
c8A.®¯⍝nᑭᵨ±ᐝ²³´᣾¶ᔣB.ᵨ§☢#᡽ᜧ«¬¹ᜧ#ºᐝ»¼D.¾¿ḄÀᡂூᑖ᪆௃c18ᐝᙠÃஹᙳᒴஹÆÇÈÉ£ÊËÌÍÎÏḄ¢ᨵ<ÐᡂÑஹ±ᐝwËஹ¿ÒḄÀᡂஹÓÔ>ᨴÔÖ;c28ᐝÌÍÎᑮgÈÉḄ⊤☢bn»~ᐝḄ¤¥¢Ù᝞Ú☢bÛ¢ÜbᱥmḄ᎔¿ஹÞ☢#ᡂÑஹßᴻÖᐝáᱥm¤ᐝi
ᐝḄ¤¥ÀᡂḄ;c38ᐝÌᙠÃᙳᒴÈÉ£ÍÎᡈὅätÈÉå¥ᐭçtÈÉnè»Û¢ᐝḄᢚ¥¢Ù᝞ÚêëVìஹÚ£íÒVîஹïð⇿òஹ§Æ#ᡂÑÖi
ᐝḄᢚ¥ÀᡂḄ஺ூ,௃,:Aஹ®¯⍝nᑭᵨ±ᐝ²³´᣾¶ᔣᑭᵨXᐝḄËÌÍÎᔠ⚪;

15Bஹ᡽ᜧ«¬ᵨḄ
§☢#34ᐝḄ¤¥¢ᔠ⚪Cஹ¹ᜧ#ºᐝ»¼
ᵫ4ᐝḄᢚ¥ÀᡂḄᔠ⚪Dஹ¾¿ô
¿Ò
ᵫᐝḄËÌÍÎÀᡂḄ஺ᔠ⚪ᦑ⌱&B஺ூ()௃+⚪õ⌕ὃ÷ᑭᵨᐝ÷ø,ùú£ûüḄᱥᳮ¢Z⚪þ▭
ὶᑗ
ᜐᜐᱥᳮḄᳮ஺4.2ᑖ᝞”ᨴ”Ḅ!
ᨴA.ᔣ$%&'(ᨴ)ᔣ*+B.ᨴ)ᔣ*+&'(ᔣ$%C.,ᜧᙢ/0᯿ᱥ2ᔣ$3ᡂᨴ)ᔣ*+D.,ᔣ$%Ḅ50᯿ᱥ2ᨴ)&ᔣ*+ூᑖ᪆௃ᐜ:;<=>?Ḅ@AᱥᑖBCDᯠFGHIẆKLMNA0᯿ᱥNA஺ூOP௃OQ“ᨴ”?Sᑮ@AᱥᑖB“”U“ᨴ)”஺ᵫ<=>3WXYḄLMᨴ)ᨴ)ᙠᔣ*+0᯿ᱥ&஺ᡠ,ᨴ),/0᯿ᱥᙠᔣ*+஺ᦑ⌱QD஺ூ^_௃`⚪ὃcdL(NAᱥ0᯿ᱥNAᱥẆKLMḄᑖ᪆efg⍝i⚪஺5.2ᑖjᓟlḄmnᦻpq⌼sᦪḄuvwxy☢{|}dL~ᑖu=?ⅾḄᱥᳮWḄᳮOQᐸ?HḄ!জ“ᦢអᜩ”--“”ᢣḄᱯ“”ঝ“☄ᨴ”--☄▭ᵫᰚᓄ£ᡂঞ“☢᪻¦§᧜©”--᪻¦ᐝ«¬;Ḅ©ᐝ᧜©ḄῊট“¯°gᱏ²³ᩭ”--“¯°”*+,µ¶/0᯿ᱥḄ஺

16A.জঝB.জটC.ঝঞD.ঞটூᑖ᪆௃L(u=?¼½ᑮḄᱥᳮWᡃ¿✌ᐜ⌕ÂÃu=ḄÄÅᯠFÆᑖ᪆HIÇᵨNgÉ☢ḄWÊOP஺ூOP௃OQজ“ᦢអᜩ”--“”ᢣḄᜧË⚪?OÌH஺ঝ“☄ᨴ”--☄▭ᵫÍÎ?ḄÏÎ⍗ÑÒᓄ£ᡂḄË⚪?OÌ┯Ô஺ঞ“☢᪻¦§᧜©”--᪻¦ᐝ«ÕÖ×Ø□ᐝ?Ḅ©ᐝ᯿ᙠḄῊGÚῊÖ×;ᩭῊ&ᕈ©⁐Ë⚪?OÌ┯Ô஺ট“¯°gᱏ²³ᩭ”--“¯°”*+,µ¶/0᯿ᱥḄË⚪?OÌH஺Ýᑖ᪆HḄজট஺ᦑ⌱QB,ூ^_௃ᱥᳮWᩭ«(
ß⌕àᵨ(
Ḅᡃ¿⌕Æáâ
ãὃ
?ḄᱥᳮM஺6.!2ᑖ᪷ç?ᡠèéêëᙠ᪗íᜧÎîyḄᰚ^!ᓫ|QCðñòᑨôyᑡöHḄ!ë᝱⏀ùë᝱úûüúý-117-39489621064A.᝱ḄB.ᙽᣵᐭᰚᓄC.⏀!ᙠ-117࠷-&'᝱D.ᡃ*ᓅ,-./0123-50࠷,67182⌱:;<ூᑖ᪆௃A1BᨔDᰚᓄ8Ḅ;EᰚFGᨔDH'8Ḅ;H'F஺JKᨔDᱥMḄᰚFNH'FOP஺A2BQR⊤TḄᑁV2WG⊤XᡃYZ[\ᔜK'᝱ᱥMḄᰚFG^_`KᱥMᙠ᝱8ḄH'FG᪷b`cdeGfᔠᔜ⌱⚗ḄᑁV2ijOkḄᑨm஺ூno௃npAஹᵫ⊤TḄᦪb2WGḄᰚFt48࠷,8Ḅ;⌕vw48࠷,ᡠyt'᝱GᦑA┯|}BஹḄᰚFt962࠷,ḄᰚFt1064࠷,ᙽᣵᐭᰚᓄGᦑB~}

17Cஹ'᝱⏀!ḄᰚF-117࠷,;ᙠ-117࠷8G'᝱⏀!2ᜐwᰚᓄG2'ᐳ᝱ஹ᝱ᡈ'᝱GᦑC┯|}Dஹᡃ*ᓅ,-./0123-50C,ᙠ-39C8H'Gᡠy;<ᵨGᦑD┯|஺ᦑ⌱:BoூF௃⚪ὃ\ᨔDḄᰚFḄ&NkᵨG~ᳮn⊤ḄᑁVGR~ᨵᵨḄdeG⌱⚗ḄO᯿Gij~ᑨm஺7.2ᑖByOᐵḄᱥᳮ7¢6ᨬᔠᳮḄABA.Ḅ~D¤t38࠷B.¥¦§¨—〉Ḅ«᛻®¯t90dB"100dBC.°±²³´;¤t8m/sD.ᜮ¶·Ḅ¸¹¤t70Hmூᑖ᪆௃✌ᐜ⚪¼½¾Ḅᱥᳮ7ᨵ¿À²Ḅ

18Gw⌱⚗ḄᓫÂG2᪷b◤⌕ijOkḄᣚÆᡈÇᣚG᣸◀ÊË▭OÍÎÏḄ⌱⚗GÐjÑᔠÊË▭Ḅoᫀ஺ூno௃npAஹ~ÓÔG¦ḄDᙠ37࠷ÕÖG×ᓄØ;ÙÚ஺ᦑAÑᔠË▭;Bஹ¥¦§¨—〉Ḅ«᛻®¯t30dB"40dB,ᦑBÑᔠË▭}Cஹ~²³Ḅ´;ᙠlm/sÕÖGᦑCÑᔠË▭}DஹcÜÝḄÞ;ᙠ75HmÕÖG¦Ḅᜮ¶Ḅ¸¹ÍßGᙠ70HmÕÖGᦑDÑᔠË▭஺ᦑ⌱pD஺ூF௃ᱥᳮàÊὶâãäGß

19cåÊḄæ7Ḅç2èéᡃYêëᙢëᱥᳮGJ8^¥ᱥᳮêëᙢtÊíî஺8.2ᑖB¦Ὴðñâòóôõᙢkᵨwὃöஹ÷ἭஹùúPG±ûᑵῊýþᜮᣓᣍᑮῊḄῊῊ஺ᑡḄA.ᑵῊ"Ḅ#ᜮ%&'()*+#B.ᑵῊ,☢./0ᑵῊ"Ḅ#ᜮᡂḄ23

20C.ᑵῊ,☢.45'ᑵῊ"#ᜮḄ67ᯖ9:᜜D.ᑵῊ,☢./0ᑵῊ"Ḅ#ᜮᡠᡂḄ3ᙠ(7ᯖ9>ᑁூᑖ᪆௃D+#ᡂ3,u>2f,ᡂ᎔FஹHIḄJ34ᵨ'᯿%"M᤬3ᜮ஺ூOP௃OQᑵῊ"Ḅ#ᜮ%&'()D+#RSᡂ᎔FஹHIḄJ3᯿%"ḄTᳮ%VḄ,ᑵῊ,☢.45'ᑵῊ"#ᜮḄ67ᯖ9:᜜ᡠᡂḄ3ᙠ(7ᯖ9MX7ᯖ9:YZᦑCABD┯]஺ᦑ⌱QC஺ூ_`௃a⚪ὃdD+#ᡂ3ḄefghMD+#ᡂ3Ḅ4ᵨ(i⌕kl஺9.2ᑖ᝞nᡠop(qrstᐭvwxᩭrsz{|}ᢚ஺A.ᐝvᐭᔣᦋB.ᐝᙠMvḄᑖ☢z{|C.ᐝᐭvᔣD.ᐝᙠMvḄᑖ☢z{|#☢ூᑖ᪆௃ᐝ(fᐭ(f,ᐝḄᔣz{ᢚfᐝḄᢚZᐝvᐭ,ᔣpᢚᜧ'ᐭ஺ூOP௃OQACஹᐭvḄrsᵫ'rsḄᐝvᐭ,ᔣz{|ᢚᢚᜧ'ᐭᡠ>wᑮrsᙠvḄ.ᑖᔣ¡}ᢚ¢,wᑮḄ3rsḄ23஺ᦑAஹC┯]ZBDஹᐝᙠMvḄᑖ☢z{|#☢£rswxᩭz{|}ᢚḄTᦑBD┯]஺ᦑ⌱QAoூ_`௃¢⚪ὃd|ᐝḄᢚḄO¤⌕¥⍝ᐝvᐭ,ᢚᜧ'ᐭOP¢⚪Ḅᐵ¨஺10.2ᑖᢗª«ᦟ®ᵨḄ«ᘤ᝞nᡠoᢗª«Ḅ°᪀nᙠv²t³ḄD+

21#Ḅ¡ᨵ(v²☢ᡂ45°Ḅ²☢#µ¶·¸t(¹º஺ᱥ¼z½Ḅᐝ¾0D+#M²☢#¿Àᙠ¹¡ᡂ(ÁᨎḄ3஺(ᦟÃᙠÄᵨᢗª«,zᙠ¹º¡ḄÅ☢ÆIḄÇ⁚A.ÉIᢗª«¹ºYḄ9ÇD+#ÉID+#ᑮᱥ¼YḄ9B.ÉIᢗª«¹ºYḄ9¡ÇD+#ÊᜧD+#ᑮᱥ¼YḄ9C.Êᜧᢗª«¹ºYḄ9¡ÇD+#ÊᜧD+#ᑮᱥ¼YḄ9D.Êᜧᢗª«¹ºYḄ9ÇD+#ÉID+#ᑮᱥ¼YḄ9ூᑖ᪆௃ᢗª«ᡂ3ḄTᳮQf

22C.08sᑁᵬÙ6V/0ḄÛá%êD.8sëᵬÙ6Véì%êூᑖ᪆௃OP¢⚪◤⌕ᐜîïnðñòMóòᡠ⊤oḄᱥᳮõᔜ÷øᯠ¿°ᔠ⌱⚗⌲(ýᑖ᪆஺ூOP௃OQAஹᵫnÀ¥ᵬVᙠ4s,þÿ
4s,ᦑABஹ4s8sᑁᵬஹḄᩩ⊤Ḅ!"#ᡂ%ᒴ'()ᦑBCஹ0s8sᑁᵬஹ*+Ḅ5m,ᑣᵬ-*+Ḅ./ᦑCDஹᵬ04s1
ᑮ8s3
45m,ᵨ"4s
00s1
ᑮ8s3
45m,ᵨ"8s,.ᡠᵨḄ"#89:;Ḅ'<8./ᦑD┯஺ᦑ⌱@D஺ூBC௃:⚪⌕GH0!"#IJK.ᐵMNᯠPQᩭᑨTᱥVḄ()W᝱ஹ*+Ḅஹ'

23ᦑ⌱@CoூBC௃ᡠÄ“·ᣚx”Ç⌕ᢣᙠÊËᦔÌ.ḄÍÎÏ8¬ஹ8᧕¬Ḅ·ᣚᡂ¬ஹ᧕¬ḄÏÐHஹÑᩖḄu⚪·ᣚᡂÓ៉ஹÕᓫḄu⚪Ï×iZᡈiØḄᱥᳮZ·ᣚ¥ÙÚiZᡈiØḄᱥᳮZḄwx஺ÛஹÜÝ⚪Þᜧ⚪ᐳ8e⚪ᐳ24ᑖa13.3ᑖa1
᝞ᵬᡠ]ᡠiᱥVà¥3.60cm2
᝞ᡠ]á⊤âᦪ¥337.5s3
᝞äᡠ]âᦪ"åA/B/C
Ḅ஺ூᑖ᪆௃1aæ<çḄᑖ<èæ<ç.é-æ<⊤]Ḅ<஺êᵨæ<ç"⌕ᐸᑖ<ènë001â3ëæ<èìᱥVḄ<nëíᨵ0஺æ<1Ḅ⌕îæ<¥nBâ3ëæ<èï²nëᡠ©æ<ᓽ¥ᱥV<ñ^æ<ç⌕òâᑮᑖ<èḄó2
âKô⊤Ḅ]ᦪ✌ᐜ⌕÷⍝ᜧ⊤ùe⊤ùḄᑖ<èᯠP«ᢣ┐ᙠûüóý0þÿ
ᦪ3
ᵨᦪ⌕ᐜᑖ⊤☢!஺ூ$%௃$'(1
)*1cm+,ᨵ10./0ᡠ23./04⊤Ḅ670.1cm=1mm,ᓽ9)*Ḅᑖ:1mm,ᱥ<=>1.00cm?@A>4.60cm?@ᡠ2ᱥ<Ḅ6:L=4.60cm-1.00cm=3.60cm2
ᵫDE'ᙠG⊤ḄH,⊤IIminH,ᨵJ./0ᡠ23./04⊤0.5min,ᢣ┐ᙠ“5”“6”+,Mᔣ“6”3>ᡠ2ᑖ┐ᢣ
Ḅ,:5minᙠG⊤Ḅᜧ⊤I1s+,ᨵ10./0ᡠ23./04⊤0.1s,ᢣ┐ᙠ37.5sᜐᡠ2G┐ᢣ
Ḅ,:37.5s,ᓽG⊤Ḅᦪ:5min37.5s=337.5s

24(3)TUVᵨ7<ᦪ⊤☢!ᦑBY஺ᦑ%ᫀ:'(1)3.60(2)337.5(3)B஺ூbc௃d⚪ὃg)*G⊤Ḅᦪ2hḄᦪijklᜧ஺14.(3ᑖ)(1)᝞Dᡠ
3op□ᐝstuvwxᑮz{ᙠᐝ{|}ᡂ3ᩩ⁐ᐝ7ᢚx஺ᙠz{3ᑣᐝ{ᑮ⁐ᐝ஺(2)ᙠᨵᘤᩞẠᐹ2᜜Ḅᦔ஺(3)¢£Hᵯ¥⍩§ᘤst᜜T?ᵯ¥Ḅ§ᑴ,ª««¬®■᧼±ᑣ7:²■³´᜜t᯿x?¶<⌼ᡂ¸¹஺ூᑖ᪆௃(1)»p□ᐝ¼tuvw½¾ᑖ$ᡂஹÀஹÁஹÂஹÃஹÄஹ´ÅÆᓫ⁐ᐝ7ᐝḄ⁐ᦣlÉÊᱥ<ËÌxÍÎÏ⁐ÐḄ⁐ᐝ஺(2)᜜ḄᦔÑÒ(3)᜜ḄÓᵨᵨ⌶'᜜ḄÓᵨÕÖÒᑴᡂ×ØஹÙØஹᵯ⍩§ᘤÚ஺´᜜ḄÓᵨᵨ⌶'´᜜Û₯ᐝᱥÝÞᐝᑴᡂUߥᩔáᑴᡂâáãäᡂå¢æDḄᔠᡂ஺ூ$%௃$'(1)3op□ᐝstuvwxᑮz{ᙠᐝ{|}ᡂ3ᩩ⁐ᐝᓽᐝḄ⁐ᦣéêᢚxËÌxᐝᔾᦈᐸîᔜÆ⁐ᐝᡠ2ᡃñòᑮᐝ{ᐝ᯿xḄᙢi7⁐Ḅ,ᐸôḄᙢi7õ⁐Ḅ஺(2)ö:᜜ḄᦔÑÒᡠ2ᙠᨵᘤᩞẠ2᜜Ḅᦔ஺(3)⍩§ᘤ2Þ᜜ᩭT?ᵯ¥Ḅ⍩§஺ᵫêp□ᐝHøᨵ´᜜¼᧼p□¾ùúûüýþᡠ2««¬®■᧼±ᑣ7:²■³´᜜t᯿x?¶<⌼ᡂ¸¹஺ᦑ%ᫀ:'(1)ᢚx⁐(2)(3)᜜´᜜஺ூbc௃d⚪ὃgᐝḄ⁐ᦣஹᱥ<ḄÏ⁐ஹ᜜´᜜ᵨÚéêᐝÿᔠ⚪

25ᜧ஺15.3ᑖᜩ᩽Ḅᜩ᪥⌕ᨚ!"ᙢ஺$᪵&ḄḄ'■)*+,-./ᱥ᝱2ᓄ456789ᤶ᎔<=஺>᜜☢ABCDEFᑮHᡝJKLMNO$MNOPQᙠHᡝSᴻḄ⌱/“ᑁ”ᡈ“᜜”Z[\]ᑮ^᜜_`J⌱/“J”ᡈ“J”JℳLM*b஺ூᑖ᪆௃1ᱥfᵫh᝱2ᡂ.᝱Ḅjkl-.m2ᱥfopq᝱2r.᝱Ḅjkl-sm3ᱥfᵫ᝱2rh᝱l&hᓄ஺ூtu௃tvᙠwAx"ᙢyᙢ☢Ḅ*J2ᡂ.᝱ḄNz{-.Q|m}>A᝞Cᑮ0࠷x^ᑁA{^᜜ḄAᡠ^ᑁḄ*⍗ᑮḄSᴻJ-sᡂDNᨔ▬ḼᙠSᴻḄᑁZᡂNOmᵫ{^᜜Aw_`ᱏḄA{^᜜*ḄA*hᓄ,_`JℳLM*b஺ᦑuᫀrv-.mᑁmJ஺ூ௃⚪q▭,ᐭὃ¡¢ᡃ9¤¥Ḅᱥ᝱2ᓄQ|¦,ὶ¨©ᑗᜧ஺16.3ᑖL¬᝞ᵬᡠ¯Ḅ°±²ᙠ³☢஺D´µL¶·*ḄSᴻ¸ᙠ°±¹º᜻ᙢ+Qv¼j*¸Fᑮ°±Ḅὁ¾2“¿”¢ÀᣵᜮᝂᔣÅ᝞Æ஺D´ÇÈᑖ᪆v·*ḄᙊÊSᴻ¸Ëᑗ☢ÌÍ¥ÎↈÐᑮѼ`/“Ò☢`”ஹ“Ѽ`”ᡈ“Ô¼`”ḄÕᵨ×ᱏËᔣᜧஹØ᎔¼j*¸FᑮḄ'ὁ¾Ḅ/“”ᡈ“Ù”ÚÛὁ¾ᑮSᴻ¸ḄÜÝÞßfVuV2f/“f2D»

26ூᑖ᪆௃¼EᱥfçᑴᡂÌÍ¥ÎↈḄѼ`ᱥéê{Ѽ`ḄLëᯖÜíîëᯖÜïÌÛᡂ᎔²ஹᜧḄÚ஺ூtu௃tvᙊÊSᴻ¸ðÞ*ᙊÊSᴻ¸Ḅ*ÌÍ¥Îↈᡂ*Ѽ`;òѼ`×ᱏËᔣᜧஹØ᎔mᵫÆçóÛḄὁ¾ḄÚ¦ᵬḄὁ¾ôõ,'ᜧḄö÷Ø᎔ḄÚᡠÛḄᱥÜᙠLëᯖÜíîëᯖÜïÌBPf?@AḄ⚣᳛CD)*@Ḅ33ᑣ“ᢘ”ḄFG)*@ḄH(⌱J“H”ᡈ"M”)ὁOPQ?RSTᐵTᡈRV@FᡂWX=ḄDYᙠ@[ᜐ]^_@஺ூᑖ᪆௃(1)⚣᳛ᵫA[de7845fDgᩭḄ33?7i@AḄ⚣᳛fDgᩭ33j(2)]^_@Ḅ⌶mᨵopjᙠ@[ᜐ]^_@qᙠr71st]^_@qᙠuὡᜐ]^_@஺ூwx௃wj(1)7845fDgᩭḄ33⊤z?{ᑁWXḄ}ᦪfDgᩭḄ33ᑣ⚣᳛fDgᩭḄ33ᡠ2⚣᳛fHFfHq(2)ὁOPQ?RSTᐵTᡈRV@FᡂWXᑴ_@Ḅ=ḄDYᙠ@[ᜐ

27]^_@஺ᦑxᫀDjHq@[ᜐ஺ூ௃'⚪ὃ@Ḅᱯஹ■_@Ḅ⌶mᑖ᪆wxẠ⚪=஺18.3ᑖṹᙠtᜐᡃ¡¢ṹᵫᐝᙠṹ£ᫀP¤Y¥¦§⌱J“¥¦”ᡈ“ᢚ¦"஺᝞£ᵬᡠzST«¬ṹ®ṹ¯Y°᯿ᱏST᤬ᜮµ¶·¸r¹ᘤᐝ»⌕½»¾PṹḄfᜧÀ◤(ṹ☠ç⌱J“☠Ôᡈ“ÄÅ“ST᤬ᜮ஺᝞£Æᡠz?ÇÈᵨɯᩚ¯᯿ḄËÌÍÎÏÐSTɯG½ᵨÆɯᩚÑᜧYᱥÓ§⌱J“Ó”ᡈ“ᱥÓ”஺ᵬÆூᑖ᪆௃ṹÔ¥¦ᐝqµ¶·ᡂ?ᱥÓu>2f,ᡂ᎔Ö×ØḄÙÚᵨ᯿Tµ¶·ᡂÙ?ᱥÃÄfᜧqɯᩚ2Ñᜧ·ᜮÍuÛ{ḄÓÅ஺ூwx௃wj¢ṹᵫᐝᙠṹ£ᫀP¤Y¥¦ஹ¥¦ḄᐝᐭuḄÝÞqSTḄ·ᜮDµ¶·ṹ¥¦Ḅᐝß1᤬ᜮàᡂ᎔Öஹ×ØḄÙq⌕½»¾PṹḄfᜧ◤⌕]ØᱥÓÑᜧÓᓽ(ṹ☠ÃST᤬ᜮ஺ᵨɯᩚ¯᯿?ÑᜧYuÍ·ᜮ{ḄÓÅÑᜧYᱥÓ஺ᦑxᫀDj¥¦q☠ÃqᱥÓ஺ூ௃'⚪ὃᐝḄ¥¦âஹµ¶·ᡂãᐸÚᵨÍÙ▭ὶçèᑗ⍝Ạ⚪஺19.3ᑖØë.Øìíᔠïðñò┵Çô45ḄÙõ?(ö÷øᜧḄᙊòᱏúûᜧØ
øḄᡧýïᡂö÷┵þ
øḄò┵᝞£ᡠz஺1
Ù▭Ùõ¤ò┵ÇôḄ?{§?{/
⌱ᵨ┵┵ᜧᜧ/Ḅ┵஺2
!┵"#$%&'Ḅ(᠒*+,┵Ḅ┵ஹ┵Ḅ.ᨵᐵ1

28ᡭ456ᵨ78Ḅ9:┵Ẇ<┵&'(᠒,┵Ḅᐵ=>?9᪵ABC,ᐸFGHIᨵJᑴ┵.LM஺ூᑖ᪆௃$1&8R┵&'(ᑣTUVGW*"XYTUM%Zὃ⇋஺$2&ᑴ]┵T"᪵ᜧḄ^_ZᜧBMḄ#`ᑖ⌼ᡂ┵ḄcdB஺ூef௃eg$1&┵&'(TUV┵Ḅ┵hᜧ&'Ḅh᠒ᡠj◤⌕⌱ᵨ┵ᜧḄmnoV$2&᪷q┵#rsḄᑴ]tᵫv_Z`ᑖḄᜧBᡠj┵Ḅ.wB஺ᦑfᫀg$1&TUgᜧV$3&IᨵJᑴ┵.LM஺ூz{௃ᙠ}Ḅ~<8⌕ᵨJᑴḄẆ

29ᦑfᫀg§¨Ḅ©᜜VVᜧ஺ூz{௃}⚪⌕ὃᡂ²ḄFᳮÄẠ஺Æஹef⚪}ᜧ⚪ᐳ9⚪ᐳ52ᑖ21.2ᑖ᝞7ᡠÉSH#:ÊᐝzSHËᙠÌ☢Î8ᡂḄ²SAHSÊÏḄ#Ðᐝ஺Ñᙠ78ÒÏÌ☢ÎḄÓÔSAÕÌ☢ÎÖ×ØḄᐝ½஺ூᑖ᪆௃᪷qÌ☢Îᡂ²ḄᱯzÚ²,ᱥᐵvÎ☢¥ÛᑣÎ☢ÓᙠSS'Ḅ8ᚖ½^]ÏÎ☢ØÝÞᑮᐭ×z0,ßàS'O1áâᑮB,ᑣ0BᓽÖ×ᐝ½஺ூef௃egäÚSHSᙠÌ☢Î8ᡂḄ²ᑣßàSS',]ÏSS'ḄᚖåÌᑖ½ᓽÎ☢VáâSAæÎ☢vz0,áâS'0çèᑮSAḄÖ×ᐝ½0B,᝞&7ᡠÉ:ூz{௃w᪷qÌ☢Îᡂ²ḄᱯzÞÏÌ☢ÎḄÓw᪷qÖ×êëìíÞÏÖ×ᐝ½஺22.2ᑖ¡ᨵîḄïðñ`ᨵ#òóôA,õöᙠBᜐµᑮóôḄ²ᙠCᜐÑÒÏøõµᑮóôḄᐝ7஺Bூᑖ᪆௃ᵫv"óôÖ×ḄᐝÕî☢Êùᢚ×ᢚ×ᐝ½³´t½ûᢚᔣ&ûᢚᢚ×ᐝ½×ᐭøõøýᐝþå½ÿḄᙠᢚᐝḄᔣ

30ᑮḄḄ஺ூ௃ᢚᐝᐭ"#$ᐝ%&'ḄᙠᢚᐝḄᔣḄCᜐᑮḄḄ)ᵫ⚪,-ᙠCᜐ".ᙠBᜐ)ᐜ01BஹC3456☢8904ᑣ0ᐭ4)01A0,᪗<ᜮᐭᐝᑣOBᢚᐝ>᪗<ᜮ᝞@ᡠBூ4C௃D⚪ὃFGᐝḄᢚᐝH@ḄIJ⌕-⍝ᢚᐝMNOPḄ஺23.2ᑖRSᙠ@TIPᐭᐝUVWXYZḄᢚᐝ஺Vூᑖ᪆௃ᐜ\]ᡠ^ḄᐭᐝᡈᢚᐝḄᱯ4ᯠZ᪷cWXYḄᐝdᱯ4e@஺ூ௃fg9hᐝiḄᐝUWXYᢚZjVᯖ4)lVᯖ4ḄᐝUWXYᢚZjfg9hᐝi᝞@ᡠBூ4C௃WXYmᩩᱯoᐝḄe@জlVᯖ4ḄᐝUWXYᢚZjfg9hᐝi஺ঝfg9hᐝiḄᐝUWXYᢚZjVᯖ4஺ঞVᐝsḄᐝUWXYᢚZ'tᔣuᦋw஺24.9ᑖR0╋yz{9|}ḕTᓅᓅ0ᔣᓭUஹV|Zᑮ╋|ᡂ|}ḕ}ᓅஹ}Tஹ}ᓭᙢḄTizHhl⍝஺ᐰ304.5᪗#250ᓭ¡¢£▭ᑡ¦§2¨,

312020¬12ᨴ10¯18#±²³ἠ᝞⊤¶215mḄC3666/3/6½£▭ᑡ¦N¾£ᑮᓭḄᑖg#¿⊤஺ÀÁ¾£ÂÃᓭ......╋|ᓭᑮÀ#¿0753803......1026O¦#¿07390755805......Æ1R£▭ᑡ¦ᵫᓭÇÈᓭᡠUVḄHÉÊËkm)Æ2RÍ£▭ᑡ¦Nᓭᑮ╋|UVḄHÉ475km,ᑣ╋|ÀḄᑮÀ#¿ÊË)Æ3RÍ£▭ᑡ¦⌶UÐÑ7285ÒḄᜧ᫑ᑣ£▭ᑡ¦ÕᐰlVᜧ᫑ᡠ◤⌕Ḅ#×ÊËs?ூᑖ᪆௃ÆIRᵫ⊤Ûᦪc,-£▭ᑡ¦ᵫᓭÇÈᓭḄ#×᪷cs=vtàPᡠUVḄHÉÆ2R-⍝£▭ᑡ¦Nᓭᑮ╋|UVḄHÉá¶᪷ct=âàPᑡ¦Nᓭᑮv╋|Ḅ#×ᯠZàP╋|ÀḄᑮÀ#¿)Æ3Rᑡ¦ÕᐰlVᜧ᫑ḄHÉã9ᑡ¦áᜧ᫑Ḅ¶äá᪷ct=åàPᑡ¦ÕᐰlvVᜧ᫑ᡠ◤⌕Ḅ#×஺ூ௃:Æ1Rᵫ⚪-ᑡ¦#250,ᓽv=250km/h,£▭ᑡ¦ᵫᓭÇÈᓭᡠᵨḄ#×t=1026-805=2h21min=2.35h,ᑣᡠUVḄHÉs=vt=250km/hX2.35h=587.5km)Æ2Rï¦Nᓭᑮ╋|Ḅ#×t2=^=475km=].9h=lh54min,v250km/hᑣ╋|ÀḄᑮÀ#¿805+lh54min=959)Æ3Rᑡ¦ÕᐰlVḄHÉs'=Lts+L¦=7285m+215m=7500m=7.5km,ᑣ£▭ᑡ¦ÕᐰlVᜧ᫑ᡠ◤⌕Ḅ#×t'=s=7.5km=o.ÆR3h=lO8s஺v250km/hÆ1R£▭ᑡ¦ᵫᓭÇÈᓭᡠUVḄHÉ587.5km)

32Æ2Rᑣ╋|ÀḄᑮÀ#¿959)Æ3Rᑣ£▭ᑡ¦ÕᐰlVᜧ᫑ᡠ◤⌕Ḅ#×108s஺ூ4C௃D⚪ὃFGdø¨¶ùḄᵨúN⊤TûüᨵᵨḄþÿ
⚪Ḅᐵ஺25.4ᑖᙠ“ᐝḄ”Ḅ᝞ᡠ!☢#M%ᙠ&!'☢(EஹF,ᙽ./0ᩭḄ234ᚖ67#☢89ON<=஺1᝞a,AEஹFᙠBC!☢(DEᐭᐝGAOI34Eᔣ#☢ᙠF(KLᑮᐝGOB,OPᐭQRQḄᜧTUVᓽXPYZ[Q\7ᐭQ]^_`᪵XPYZbᔠᳮ⌱f“ᔠᳮ”ᡈ“bᔠᳮ”hijCkᦪmXPYZᨵᏔᯠឋ஺2rsCtᐝuḼ34FIBOᑮOwᐝsIḄOAxᔣP,i_ᙠᐝḄyzᐝ{K⌮Ḅ஺3᝞b,GON_G34Fᔣ᠒<ᙠF(b⌱f“”ᡈ“b”LᑮᐝGOB,ᐝGᐭᐝGGONᙠBCBC/bB!☢ᑁDᐝᯠᙠ⌱f“ᯠᙠ”ᡈ“bᙠ”஺ூᑖ᪆௃1_ḄᏔᯠឋkᯠKXPYZ2EᐝG⌮ḼBOḄxᔣᔣ#☢yᐝGIḼOAxᔣPḄ¡¢KXᑮ⚪Ḅ£ᫀ஺3ᐝḄ¥[ᐭᐝGஹᐝGRGᙠBC!☢ᑁᐭᐝGRᐝGᑖ¦ᙠG,§Q\7ᐭQ஺ூ
£௃
[1bᔠᳮ஺ᨵᏔᯠឋb¨ᵫCªᦪm«XPYZjCkᦪmXPYZᨵᏔᯠឋᦋᐭQ®¯k2Aᐝ⌮ḼhᩭḄᐝGᐭDᐝG°⌮ḼhᩭḄᐭᐝGP±ᓽsCtᐝuḼ34FIBOᑮOwᐝsIḄOAxᔣP`ᙠyzᐝ{K⌮Ḅ஺

333᪷mᐝḄ¥[ᙠyzᐝGஹᐭᐝGᑖ¦G,§ᐝGஹᐭᐝGRGᙠBC!☢ᑁ஺ᡠ34Fᔣ³ᡈᔣᢚµᑣᙠ34F(·bLᑮᐝGᐝGஹᐭᐝGRGᙠBC!☢ᑁDᐝGᯠᙠ஺ᦑ£ᫀ_[1bᔠᳮjCkᦪmXPYZᨵᏔᯠឋ20AK⌮3b;BCᯠᙠ஺ூw»௃¼⚪ὃ¾¿ẆᐝḄ¥Ḅ஺¼KXP[ᐝGஹᐭᐝGஹGᙠBC!☢ᑁᐝGRᐭᐝGᑖ¦GḄ,§Q\7ᐭQ஺ᐝ{ᐹᨵK⌮ឋ஺26.7ᑖÄÅÆÇÈḄBÉ®¯“&ÊËDÌÍᓄḄᱯw”஺ᵬÑÒ1᝞ᵬᡠªÓÓÔD%ÔÕÖ×ḄØᙌÚÔRÛᢞÌÍÝḄØᜳÚÔßàá⌕Aᐜä᦮æ¥ØᙌḄÚÔ⌱f“Øᙌ”ᡈ“Øᜳ2ÑAªBÉᙠçDèÌÍÝḄᦪD&ḄÌÍ963᝞⊤ᙠbBDèḄÌÍëìAªḄTᵫ7íîᜧïë┯¿Cñᦪm]^_┯òḄᦪm95°C,]`᪵ᑨöḄm&ÊËDᔾøÌÍb஺Dý67891011121314/min969798989598989898…/࠷♦4AஹB,ªBÉ⌱ᵨḄÓÔúBḄûs&üøᑮÊËᡠᵨḄDýᓾbB,

34ᑴḄ᝞ᡠ!aஹb%&'(Ḅ)*+,-.Ḅ/0'(1ᑏ34&ᓽ+6஺ூᑖ᪆௃116<ᵨ⏀?@᜜ᯚCD!EFᴻH',IJᘤLMN!OPᘤᩞ.Rᢥ᯿UVWXḄYZ[126E\ᦪ.^_0`Mᑖa[136.ᔾD'c[146de.fḄghijk0ஹlmnoᡈὅCr஺ூst௃si116<ᵨ⏀?@᜜ᯚCD!EFᴻH',IJᘤLMN!OPᘤᩞ.Rᢥ᯿UVWXḄYZ!ᡠuRvᐜx᦮z{|ᙌḄ~[126-AO(ᙠ.EḄᦪ!Eᑖa1࠷,.Ḅ-96࠷[136.ᔾD'c!ᵫ⊤<ᦪ+!ᙠ8min!R'cᓄ,┯Ḅᦪ-lOminḄ95࠷[146᝞ᡠ!aஹb%&!(!ᡠᵨ.f'(!ᡠu'(Ḅ)*+,-.Ḅ/0'(஺ᦑtᫀi116|ᙌ[12696[13695[.ᔾD'c[146.Ḅ/0'(஺ூ௃⚪ὃ!ᐵ¡-¢£¤ᑁJ¦§_¨!©ªᑖ᪆ᓽ+஺27.17ᑖ6¬ᵨₐ⁐Fᴻ°M%±(Ḅ²³´µ¶·¸ᱥᑮ»☢½¾¿ᐵÀḄ஺116¢Fᴻ°ÁÂÃᙠ»Ä☢X,ᙠÅÆXÇFᴻ°ÈÉ%⊤☢ÊËMM'MNN'[126ᙠFᴻ°Èϲ³A,¢²³BÏᑮFᴻ°É!ÑÒ¸²³AḄ·Óᔠ:136⌱ᵨ%±×ᐰ(Ḅ²³-ÙÚÛ·¸ᱥḄᜧ¬ḄᐵÀ;ᵬ

35ßᦪ12345lA/cm4.305.707.108.809.90IB/CITI/5.406.808.509.60(4)ᙠÅÆXDz³AMBḄçèÊᙊ!ê0AḄëìᑮMM'Ḅ¾¿lA=4.30cm[ê0BḄîìᑮNN'Ḅ¾¿᝞ᵬᡠ!ᐸa1R=4.00cmi(5)ÚÛ1BM1A,ñ1Bò-¬ó1A,ôõö÷øù!úûü¬<Ḅ┯ýþÿ
஺ḄMM'(1BBḄᑮMM'Ḅ)(6)!ᵨ᝞$%ᡠ'Ḅ()*+,-./ᜐ1234567ᱥ9☢;Ḅ<=ᐵ?᝞$@ᡠ'.ABCDᙠAᜐ.GᙠBᜐHI.JKLᑮBCḄ6ᙠ(a/b/c/d)ᜐ஺ூᑖ᪆௃(1)459☢;ᡂ6W.XYᴻ[\9]☢ᚖ_(2)459☢;ᡂ6W.aᱥ6bᔠW.JKde6Ḅ<=.fWgJKhiᱥ6ᜧkl(3)ᙠn,-o.pqrsᱥ6ᜧᐵ?.ᑭᵨlᦔvwḄ(x.ᵨkfḄBC+rs.ᩭz{ᱥ6ᜧᐵ?(4)᪷~Ḅᑖᦪ(5)᪷~⊤)oḄᦪ~76Ḅᜧᑖ᪆(6)*ᣚᡂ()*+,-.xḄ1234567ᱥ9☢;Ḅ<=ᐵ?67ᱥᐵ3;☢஺ூ௃(1)459☢;ᡂ6W.AYᴻ[_D=.᪵ᡂḄ6ᙠ\9☢(2)ᙠYᴻ[D=BCA,AᐰkfḄBCBDᙠYᴻ[G._ᙠYᴻ[ḄHI._BAḄ6ᐰbᔠ.᪵ḄḄdeq6Ḅ<=¡-¢q6ᱥᜧkl(3),-oḄ£BC⌕¥ᜧkf.1pqrs6ᱥḄᜧᐵ?(4)ᵫ$J§.Ḅᑖp1mm,ᑣªp40.0mm=4.00cm(5)®pYᴻ[ᨵeḄ°.BCA1±²Yᴻ[Ḅ☢MM'ᡂ6.ᦑᱥ76ᑮYᴻ[Ḅ☢MM'Ḅ.,-o´µ1B¶131A.·µ¸¹Ḅº®J

361Ḅ16ᑮYᴻ[Ḅ»☢NN'Ḅ.dx1ḄMM'$1BBḄᑮMM'Ḅ½¾6½*ᣚᡂ()*+,-.xḄ1234567ᱥ9☢;Ḅ<=ᐵ?;AḄ67Aᐵ3;☢.ᦑJKLᑮBCḄ6ᙠbᜐᦑᫀp¾1½_¾2½BCAḄ6¾3½6ᱥḄᜧ¾4½4.00¾5½ḄMM'$1BBḄᑮMM'Ḅ½¾6½234567ᱥ9☢;Ḅ<=ᐵ?boூÂ௃Ã⚪Å⌕ὃÇq9☢;ᡂ6ᱯḄ,-Éᐸᵨ஺1ᐝÌoḄÍb.g1ÎÏÐᩭoὃÑÒ·µḄ⚪Ó.⌕¥ÌÔÕÖ×Ø.GÌÙᮣÛÜᵨ஺28.¾9ᑖ½i7!+“45àá;ᡂ6âã”,-஺/|1||11|11|121|1ᵬ1ᡡ411ip11ipiJT஺ninnpmj566cm10203040506070809078¾1½pq·ᡠᵨàá;Ḅᯖ.iAá;Ḽî□.᝞$ᵬᡠ'.*<=_ᑮñ*·µᨬᨬóḄ.·ôᑮá;ᐝõᓽpᯖ஺!ᢣ·iḄøùoúᙠḄ┯ü1àá;ýᨵî□ᐝ.ᦋ┯ü.iᵨd(x·àá;ᯖp10cm¾2½pqX{∑ḄᡂᙠᐝḄᯚᐝḄḄᐝᑣ⌕"ᯚஹᐝᐝ$%᝞'(ᡠ*Ḅ+ᩩ-./0ᓽ2஺ᙠ456789:;<=>Ḅ?@AᔠᳮDᔠE89FGḄH9IᢣKL᝞Mᢥ᯿Ḅ?@45892PQlmᨎḄ᎔pஹqᜧ]s/qᜧ/uᜧ_Ḅ8\vwᢝg'∑ᐝḄ

37hUy"z%65.0cmi,ᐝ7K>mᨎḄ\]4_89iᐝHᑮl∑mᨎḄ+ᵨᢣ■ᐸzy,ᑣᐝᨵ]ᨵ/ᨵ_ᢣḄᡈᐝ∑Ḅ᦮]᦮/U᦮_஺]5_eᐝᕈ>mᨎḄiwᢝ∑hU+89ᯖ[☢/;Ḅ¡¢ᩭḄ789ᡠᡂḄᩭḄ:ᨩ]⌱¥"§”ᡈ“ᨩ”_l஺]6_89ᡂª<"«Ḅ¬qᙠ∑ª᝞'®ᡠ*ᐝᩭmᨎḄ¯°l"ᐝᔣ²³?ᔣzy〉e[³<ᐝḄ7mᨎᑣ«Ḅ¬µ¶¬]µ¶¬/²¶¬_஺ூᑖ᪆௃]1_¼5ᐝḄᐝ0H½<¾¾¿ᑮᯖÀ\]2_89◤⌕"ᯚஹஹᐝḄᙠ+ÃÄ\vUᙠ+ÃÄU?VXYᱥ[[ḄᜧL]3_ᱥ[ᙠ+Åᯖ[ÆÅᯖ[ªiᡂḄW᎔pஹqᜧḄ8\ᙠᐝḄᢚÈᐝÉW2⌮ḄL]4_ᱥ[+Åᯖ[iᡂËUPᙠᐝᡂ\ᡂ8WÌᱥÍ=KḄᐝ0H½<¾¿ᑮÀvÎḄ+ÏᑖᑣᐸÐÏᑖÑᯠPÓ¾¿ᐝ0ᡠÔÑPᡂ᦮ḄW᯿ÈᑮḄᐝ0ᦪYÖ×:ᩭᨩ\]5_ᵨᯖ[ஹ☢/;Ḅ=ᐝÍ=KḄᐝ½Ḅᐝ0×ØÙᑖ᪆>Ú\]6_µ¶¬WÛÛÜᐝ0ᨵ=ᦣGᵨ஺ூÞß௃ÞL]1_᪷ØÜᐝ0ḄGᵨ2á¼5ᐝḄᐝ0H½<¾¾¿ᑮᯖÀᡠÔ89`ÜḼã□ᐝ\]2_l∑ḄᡂᙠᐝḄᯚஹஹᐝḄᙠ+ÃÄ,2Ô"ᯚᐝḄḄᐝ\᝞Mᢥ᯿åḄ?@4589ᵫᱥ[[W+ᩩ.0Uç᧕XYᱥ[[Ḅᜧ\]3_ᵫ'g2áÙiḄᱥ[15.0cm,[30.0cm,ᱥ[ᙠ+Åᯖ[ÆÅᯖ[ªiᡂḄW᎔pஹqᜧḄ8\

38᪷ØᐝÉ2⌮2áeᱥ[30.0cmi[15.0cm,ÙiPᡂ᎔pஹsḄ8ᓽ"z%65.0cmiᐝ7K>mᨎḄ\]4_ᵨᢣiᱥ[+Åᯖ[ÙiᡂËᙠᐝUPᡂ᦮éᱥÍ=KḄᐝêᨵ+Ïᑖëᢱí¾ᨵ+Ïᑖᐝî½¾¿ᡂÌÙᐝᨵᢣḄᡈ\ᵫḄ+ÏᑖëÎÌÙᢚÈKḄᐝ0ᩭ:Ö×lÑ᦮ï§Ä¾ᨩ\]5_ᵨð+89ᯖ[☢/;Ḅ¡¢ᩭḄ789HḄᐝ0×ᡠᡂḄᩭḄ::ᩭᨩ\]6_"«Ḅ¬qᙠ∑ªᐝᩭmᨎḄ¯°l"ᐝᔣ²³?ᔣzy〉e[³<ñòó¾¿l᪷ØÛÜᐝ0ḄGᵨ2á¬ÛÛ2Ôô`µ¶¬஺ᦑßᫀL]1_ᨵ`Üã□ᐝ\]2_ᐝ\U?VXYᱥ[[\]3_qᜧ\65.0\]4_ᨵ\᦮\]5_ᨩ\]6_µ¶¬஺ூÀ÷௃ø⚪⌕ὃûᡂḄᵨ⌕üýᡂḄþÿ
ḄᱯஹᱥḄᐵ஺29.10ᑖ▅ᦻᦻ⚪஺"#$"%Ḅ&ᦪ᝞)ᵬ+,Ḅ"#Ḅ-᪀)/012᯿45ᡃ78ᱥ9:+;<=>9Ḅ?@ᩭB⁚ᨔ>9ḄEFG&ᦋIᨔ>9ḄᯖKLMNOḄᱥ9PQᙠ4MḄSTUVWᡂᨎḄ᎔[\஺]=>9^_:ᨔ>9`aↈcᐝḄeᢚQgIhNᜐᱥ9jᩭḄᐝklmnᙠSTUV"ᳫpq8NᜐḄᱥ9r]=>9ᦈ@:ᨔ>9ItcᐝḄeᢚQgIᜧOᜐᱥ9jᩭḄᐝmnᙠSTUV"#vpq8OᜐḄᱥ9஺wxOSஹNSᡠ⌼ᡂḄSg{|pq}ᡚ"%஺

39;%ᯖqᓫḄ᎔ᦪ%Ḅᯖ&ᵨg⊤ᓽg=■᝞%Ḅᯖ+0.5m,/Ḅᯖ&v+==^=2mIf0.5m᝞NS0"%V%Ḅᢚᐝ⚞ᜧ1%ᯖ&v⌕ᜧ1:Ḅ"%ᱏḄ&ᦪv+%ᱏḄ%ᯖ&q100Ḅ¡¢᝞100&NS%ᱏḄ%ᯖ&+1ml/Ḅᯖ+1m஺%NS%ᱏḄ&ᦪ+xᦪ£%OS%ᱏḄ&ᦪ+¤ᦪ஺¥ᯠ}ᡚ"%pqwxSg§+¨ᡃ7ḄW©ªᩭ«¬L®¯ᡃ7ᙠW©⌕°ᡂᏉ²ᵨ"³´µ¶lᡃ7Ḅ"#஺1
"#012᯿45"ᳫᑁḄᨔ>94]¸1¹C,STU4]¸ᐝ»஺A.☢%B.£☢%C.%D.£%2
$᯿45LM,"+½xḄIᯖ¾,"8Oᜐᱥ9:ᯖah¿“ᜧ”ᡈ“h”஺3
᪷ÄᦻÅÆÇᑡÉ┯ËḄ+C஺A.%ḄᯖÌᢚᐝ⚞ÌÍB.%ḄᯖÌᯖ&ÌᜧC.%ḄᯖÌÎ%ᱏḄ&ᦪÌÏD.%Ḅᯖ&Ìᜧ%ᱏḄ&ᦪÌÏ4
hÐMÑ}"%:ḄÒᐝᓫVÓÔ᪗Ö×"ᯖ&-3.00,Ø"ᯖ&-2.75,wxSg1.0,ᑣhÐwxSg◤⌱ᵨ)ÜḄA¿ÝÞ%Ø"ᡠ}%ᱏḄ&ᦪ+-275&஺5
hÐḄ᱅᱅}Ḅ"%+400&/Ḅᯖ+25cm஺àLª"%:8áâᡂãä+)åḄ¿ÝÞ஺ூᑖ᪆௃1,Ḅ"ᳫl12᯿45ᨔ>9éêUḄᐳMìᵨ4]¸1¹%᜜îᱥ9ᙠSTUVᡂr2
᪷Ä“]=>9ᦈ@:ᨔ>9ItcᐝḄeᢚQgIᜧOᜐᱥ9jᩭḄᐝmnᙠSTUV"#vpq8OᜐḄᱥ9”ᩭï¯⚪r3
%ḄᯖfḄÎ᪗ðḼᢚᐝ⚞ḄᜧhᯖÌᢚᐝ⚞Ìᜧ4
%NS%ᱏḄ&ᦪ+xᦪ£%OS%ᱏḄ&ᦪ+¤ᦪ஺:Ḅ"%ᱏḄ&ᦪv+%ᱏḄ%ᯖ&q100Ḅ¡r

405ᵫ"%&ᦪôõ%ᯖ&%ᯖ&pXI00="%&ᦪᵫ%ᯖ&ôõ%Ḅᯖùp=ArfNS"Ḅᨔ>9aↈmnQgaü8OᜐḄᱥ9:ýᡂᙠSTUḄ☢NS"þᡚ%ÿ
஺ூ௃1᯿ᳫᑁḄᨔ!"#$ᐝ&᜜(ᱥᙠ"#$+ᡠᡂḄ.᎔0ஹ23Ḅ4;27ᨔḄ89:;<⁚>?ᜐᱥABCDᨔEↈᢚᐝHIEJKᡂᙠ"#$+L>MᜐḄᱥABᦈ2ᨔEOᢚᐝHIEPᓽᯖSE3THKᡂᙠ"#$+;3ABஹ!ḄᯖSfḄZ[᪗]Ḽᢚᐝ_⚞Ḅᜧ3ᯖSb[ᢚᐝ_⚞bᜧLcᯖ9p=",ᡠ;!ḄᯖSb[ᯖ9bᜧᦑABiLCஹᵫᦻmno:p!ᱏḄ9ᦪs.!ᱏḄ!ᯖ9t;100Ḅvᡠ;!ḄᯖSbZᢚᐝ_⚞b3!Ḅᯖ9b3!ᱏḄ9ᦪbwᦑC┯y;Dஹ!Ḅᯖ9bᜧ!ᱏḄ9ᦪb{ᦑDi஺4ᵫᩞᧇm“!?"!ᱏḄ9ᦪ.ᦪ!M"!ᱏḄ9ᦪ.ᦪ“:pḄ!.M"!LᵨmḄA!BC!D☢!ᑣ3
"I◤⌱ᵨmḄA!;ᵫ⊤ᦪ:pᐸᡠ!ᱏḄᯖ9-2.75,ᑣᵫᦻmno:pᐸᡠ!ᱏḄ9ᦪ-2.75X100=-2759;5c!Ḅ9ᦪᯖS᎔ᦪḄ100p=l,ᓽ400=100,ffᑣf=122_m=O.25m=25cmL4003Ḅ᱅᱅Ḅ!.ὁ¥!ὁ¥!¦!ᙠ§ḄBᐭ©ᐝª«¬ᙠ"#$Ḅ®B⊤¯°?"Ḅᡂ±²஺ᦑᫀ1CL233C4AL525LB஺ூ´µ௃_⚪·⌕¹º°!Ḅᡂᱯ´¼½¾¿⚪⌕ÀᔠM"ḄᡂcÂîÄÅᑖ᪆஺½⚪ȺḄ4▭ºÊὶÌÍᑗᨵ4▭Ð஺