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ID:12769924
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页数:17页
时间:2018-07-18
《中级汽车修理工试题(含答案)(intermediate auto mechanics test (including answers))》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。
1、中级汽车修理工试题2(含答案)(Intermediateautomechanicstest2(includinganswers))Nationalvocationalqualificationexamination-intermediateautomechanicssimulationexam2Theredansweristhecorrectanswer,1.Thebrandofhigh-qualitycarbonstructuralsteelisrepresentedbytwoNumbers,indicatingtheaveragecarboncontentofsteel(
2、).Perseveral2.Inthefollowingmaterials,thequalitycarbonstructuralsteelis().40Inthefollowingmaterials,theenginecrankshaftisused().454,T8Abelongsto().Carbontoolsteel5.Excessiveviscosityofengineoilwillcause().Theengineishardtostart6.40Crisakindoftemperedsteel,whichisusedtomakethepumpshaft,andth
3、efinalheattreatmentmethodis()forgoodcomprehensivemechanicalproperties.Quench+hightemperaturetemperingComparedwithsteel,theoutstandingfeatureofcastirontechnologyis().GoodcastabilityThefunctionof()istopassthethrustofthecamshafttothepushrod.lifter9.Thecombustiblemixtureformingdeviceofgasolinee
4、ngineis().carburetor10.Theidlejetholeofthecarburetorisatthethrottle().below11.Thefunctionofthevalveistosupportandclosethevalveandclosethevalveandpreventthevalvefrombeating.ValvespringsInthefollowingoptions,()theengine'sairsupplyunit.Airfilter13.Thefunctionoftheputteristopassthroughthethrust
5、fromthecamshaft.Rockerarm14.Thefunctionof()istoensurethattheengineisprovidedwithasmallandconcentratedmixtureinidleorsmallloadconditions.Idlespeeddevice15.Within()range.?15.Whentheengineiscoldstart-up,thesupplyofextremelythickmixtureisrequiredforexcessiveaircoefficient0.2~0.6Takegasolineouto
6、fthetankandintothefloatchamberofthecarburetor.ThepetrolpumpThemixinggasformingdeviceofdieselengineis().Thecombustionchamber18.Thefunctionofthecranklinkagemechanismistotransformtheforceofthecombustiongasatthetopofthepistontothetorqueof(),andthemechanicalenergycanbeexportedthroughthecrankshaf
7、t.ThecrankshaftInthefollowingoptions,()alow-pressureoilroadsupplydevicefordieselengines.OiltransferpumpThecombustionchamberiscompact,lowheatlossandhighthermalefficiency.Theunifiedstyle21.Thedeviceisusedtopreventautomatictransmissionofautomobiletransmissi
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