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1、焊工试题（Welderexaminationquestions）Welder'sadvancedtheoryexercisebook(answerthree)Source:thisstationis2008/12/11(878)Share:0label:welderadvancedtheoryFirst,individualchoice(firstquestions~eightiethquestions).Chooseacorrectanswerandputthecorrespondinglettersintothebracketsinthequestions.1point
2、spergame,80points.)1.thewelder'scodeofpracticedoesnotinclude()A,dedication,loyaltytodutyBandtakeanactivepartinpublicwelfareactivitiesC,aseriousandresponsiblework,strictwithoneselfD,unityandcooperation,andactivelycooperatewiththework2.whenreadingassemblydrawings,itisnotthemainpurpose.Aandun
3、derstandhowamachineoracomponentworksB,understandthefullsizeofthepartC,understandthefunctionofeachpartanddrivelineDandthestructuralfeaturesofeachpart3.whensteelisstretched,themaximumstressthatthematerialbearsbeforebreakingitiscalled().AandyieldpointBandimpacttoughnessCandelongationDtensiles
4、trength4.hardnessisameasureofmetalmaterial()anindicator.A,roughB,precisionC,softandhardD,stiffness5.pearliticheat-resistantsteelismainlybasedonlowalloysteelwithhightemperature,strengthandoxidationresistance.A,chromium,molybdenum,B,chromium,nickel,C,chromium,manganese,D,manganese,siliconThe
5、voltagedistributiononthe6.seriesresistanceisdirectlyproportionaltothemagnitudeofeachresistor,andthetotalresistancevalueinseriesisequaltothatofeach.AandthesumoftheresistancesThedifferencebetweenBandresistanceThedifferencebetweentheCandtheinverseoftheresistanceD,sumofresistors7.,inordertoexp
6、andtherangeofACvoltmeter,shouldbeequippedwith().A,currentdividerB,voltagedividerC,currenttransformerDandvoltagetransformer8.()referstothecurrentthroughthehumanbody,destructionoftheheart,lungsandnervoussystemfunction.AandelectricalinjuryBandrayC,electricshockD,electromagneticfield,physiolog
7、icaldamage9.,thesafetyvoltagecanlimitthescopeofelectricshock,soastoensurepersonalsafety.A,thebody'sresistanceisgreatB,thecurrentthroughthehumanbodyisminimalC,thebody'sresistanceisgreaterD,thecurrentthroughthehumanbodyissmaller10.()isnottheharmfulgasproduceddur
