雨课堂学堂在线学堂云《CHASSIS INSPECTION AND MAINTENANCE（重庆工业职业技术学院）》单元测试考核答案

第1题Settingupatransmissiononacaristochangetheenginetorqueandincreaseenginepower.()第2题Whenclimbingahillwithafullyloadedcar,thetransmissionshouldbeinthehighestgear.()第3题Agearwithahightransmissionratioiscalledhighgear.()第4题Theuseofeconomygearinthetransmissioncansave4-8%offuel,whilealsoreducingenginenoiseandwear.()第5题Whentheengineisworkingandtheclutchisengaged,thedirectionoftheinputshaftofthetransmissionisthesameasthatoftheengine.()第6题Themainfunctionofthemanualtransmissiontransmissiontransmissionmechanismistochangetheoutputtorque,rotationdirection,androtationspeedoftheengine.()第7题Thetransmissionincludestwomainparts:thetransmissionmechanismandthespeedcontrolmechanism.()第8题Thelubricationmethodformanualtransmissionsisgenerally____.APressuretypeBSplashtypeCPreinjectiontypeDPressureSplashComposite第9题Improperadjustmentoftheshiftcontrolmechanismmaycauseafaultinthe____system.AGearimpactBDifficultyshiftinggearsCSkipgearDTheaboveitems第10题Thetransmissionratioofapairofmeshinggearsistheratioofitsdrivengear’s____tothedrivinggear.ANumberofteethBspeedCangularvelocityDCircumferentialvelocity第1题Forasymmetricalbevelgeardifferential,whenthespeedofthedrivewheelsonbothsidesisunequal,theplanetarygearsonlyrotateanddonotrotate.()第2题Symmetricbevelgeardifferentialalwaysevenlydistributestorquetotheleftandrighthalfshaftgearswhentheplanetarygearsdonotrotate.()第3题Thedifferentialoperatesinstraightlinesandturns.()第4题Thefunctionofthedifferentialistoallowtheleftandrighthalfshaftstorotateatdifferentangularspeeds.()第5题Ifthemainreduceruseshyperbolicgears,specializedhyperbolicgearoilshouldbeused.Ifitisnotavailableatthemoment,ordinarygearoilcanalsobeusedinstead.()第6题Thefunctionofthemainreduceristoreducespeed,increasetorque,andchangethedirectionoftransmission.()第7题Themainreducersonthevehicleareallplanetarygeartype.()第8题Thetwo-stagemainreducerisadualspeedmainreducer.()第9题Intheadjustmentprojectofthemainreducer,theitemthatmustbeadjustedfirstis____.ABearingpreloadBThemeshingclearancebetweenthemasterandslaveteethCThemeshingmarksofthemasterandslaveteethDNorequirements第10题Themainreducerofthedriveaxleisusedtochangethetransmissiondirection,reducethespeedand____.AGeneratinggroundclearanceBGeneratedecelerationratioCIncreasetorqueDReducetorque第11题Thereasonwhyitisdifficulttodriveoutofacarequippedwitharegularplanetarygeardifferentialwhenoneofthedrivewheelsgetsstuckinamudpitis____.AThiswheelhasnotorqueeffect,andthewheelsonthegoodroadsurfacereceivethesamesmalltorqueasthiswheelBAtthistime,thetwowheelsareturninginoppositedirectionsCDifferentialnotworking第12题Whenthecaristurning,theplanetarygearsinthedifferentialare____.AOnlyrotation,norevolutionBOnlyrevolution,norotationCTherearebothrevolutionandrotationDNotrotatingtask3第1题Whataretheparametersofpassivesuspensionthatcanbeadjusted____.ADampingcoefficientC;BStiffnessK;CStiffnessKanddampingcoefficientC;DNoneofthemcanbeadjusted.第2题Whataretheparametersofactivesuspensionthatcanbeadjusted____.ADampingcoefficientC;BStiffnessK;CStiffnessKanddampingcoefficientC;DNoneofthemcanbeadjusted.第3题Whataretheparametersofsemi-activesuspensionthatcanbeadjusted____.ADampingcoefficientC;BStiffnessK;CStiffnessKanddampingcoefficientC;DNoneofthemcanbeadjusted.第4题Afterthebushingoftheswingarmisdamaged,theswingarmassemblyshouldbereplaced()第5题Wheninstallingsuspensioncomponents,theboltsshouldbetightenedtothepointwheretheycannotbetightened,otherwisetheremaybelooseness()第6题Whendisassemblingtheshockabsorber,apresetwrenchshouldbeused()第7题Beforedisassemblingthefrontswingarmballhead,cottonclothshouldbeusedtoprotecttheballheadfromdamage()第8题Vehicleswithmultilinksuspensionstillhavegoodhandlingwhilemaintainingcomfort()第9题Inthedoublewishbonesuspensionstructure,thefour-wheelpositioningparametersarepreciselyadjustable()第10题TheMacPhersonindependentsuspensionhasasimplestructure,compactlayout,andlessunsprungmass.Whenusedforfrontsuspension,itcanincreasethespaceontheinsideofbothfrontwheels,soitismostlyusedonsedanswithfrontenginefrontwheeldrive()第11题TheMacPhersonindependentsuspensionhasanactualmainpin()第12题Thefunctionoftheguidingmechanismistoattenuatethevibrationofthevehiclebody()第13题Themainfunctionofelasticelementsistoalleviateroadimpact()第14题Theaxleofanindependentsuspensionisdividedintotwosections,andwhenonewheeljumps,theotherwheelisnotaffected()第15题Nonindependentsuspensionprovidesbetterridecomfortthanindependentsuspension()第16题Carsuspensionisageneraltermfortheelasticconnectiondevicebetweentheframe(orbody)andtheaxle()task4第1题Floatingcaliperdiscbrake,thebrakecalipercanmoveradiallyrelativetothebrakedisc,pushingthefrictionplateagainstthebrakediscandgeneratingfriction,controllingthewheelrotationthroughfriction.()第2题Thebrakingefficiencyofdiscbrakesisbetterthanthatofdrumbrakesbecausediscbrakeshaveaselfincreasingforceeffect.()第3题Afterthebrakeisreleased,theoilpipewillmaintainacertainpressuretopreventairfromenteringthehydraulicsystem.()第4题Theautomaticreturnofthediscbrakeismostlyachievedthroughtheoilsealinthemiddleofthepiston.()第5题Thebrakingefficiencyofacarreferstoitsabilitytoquicklyreducedrivingspeeduntilitstops.()第6题Theworkingprincipleofthebrakingsystemistorelyonthemutualfrictionbetweenrotatingandnonrotatingcomponentstopreventtherotationortendencyofthewheels,andtoconvertthekineticenergyofthemovingcarintotheheatgeneratedbyfrictionanddissipateitintotheatmosphere.()第7题Hydraulicbrake,abrakingsystemthatuseshydraulicpressureasthemediumfortransmittingbrakingenergy.()第8题Therotationdirectionisthesame,sothevehiclecanslowdownorevenstop.()第9题Whenbraking,thenonrotatingbrakeshoesapplyafrictiontorquetotherotatingbrakedruminthesamedirectionasthewheel()第10题Thebrakingefficiencymainlydependsonthesizeofthebrakingforce,whichisonlyrelatedtothefrictiontorqueofthebrake.()第11题Thefunctionofthebrakingsystemistoquicklyslowdownorstopamovingcar,sothatastationarycarcanreliablystayinplace,slowdown,stop,orpark.()第12题Thefunctionofthedrivingbrakedeviceistoslowdownorstopthecarintheshortestdistancewhiledriving,soastomaintainastablespeedfordownhilldriving.()第13题Whenbraking,thestrokeofthebrakepedalistoolarge.Whichofthefollowingmaybethecause:()AThepistonofthebrakewheelcylinderisstuckBThegapbetweenthebrakeshoesandbrakedrumistoosmallCExcessivewearofbrakeshoesDIncorrectadjustmentofparkingbrake第14题Thecustomercomplainedthatwhensteppingonthebrakepedalwithsteadyforce,thebrakepedalonlyslowlymovestowardsthefloorwithoutanysignsofbrakefluidleakage.Whichofthefollowingfouritemsismostlikelytobethecauseofthefault?.()ATheoverflowvalveisnotworkingproperlyBExcessivewearandtearontheentireleatherbowlCExcessivewearandtearontheauxiliaryleatherbowlDThepistonspringbecomessoft第15题Jiasaidthattheexcessivestrokeofthebrakepedalmaybecausedbythelowbrakefluidlevel;Bsaidthattheexcessivestrokeofthebrakepedalmaybecausedbyairmixinginthehydraulicsystem.Whoiscorrect:()AOnlyAiscorrectBOnlyBiscorrectCBotharecorrectDBothareincorrect第16题Use()tomeasuretheheightofthebrakepedal.AMagneticbasedialgaugeBVerniercaliperCFeelergaugeDSteelruler第17题Amongthefollowingformsofbraketransmissionmechanisms,()isonlyusedforhandbrake.AMechanicalBHydraulictypeCPneumaticDNoneoftheabove第18题Theevaluationindicatorsforbrakingefficiencyincludebrakingdistance,brakingtime,and().ABrakingaccelerationBBrakedecelerationCFastbrakingspeedDSlowbrakingspeed第19题SinglechoicequestionWhenbrakingacar,thebrakingperformanceisoptimalwhenthesliprateofthewheelsisaround()%.A100B50C75D20task5第1题Theelectricpowersteeringsystemdoesnotrequireacornersensor.()第2题WhentheEPSmalfunctionlightonthedrivinginstrumentpanelremainson,itindicatesamalfunctionintheelectronicpowersteeringsystem()第3题Theanglesensorisanimportantcomponentoftheelectricpowersteeringsystem.()第4题Thehydraulicoilofthehydraulicpowersteeringsystemdoesnotneedtobereplacedinatimelymanner.()第5题Thehydraulicpowersteeringsystemmaintainsthesamelevelofassistanceinanysituation.()第6题Theelectricpowersteeringsystemdoesnotrequireasteeringjoint.()第7题Whenthecarisnotstarted,thepowersteeringsystemcanalsofunctionnormally.()第8题Themostcommonlyusedformofpowersteeringcurrentlyiselectricpowersteering().()第9题Whenthecaristurning,theleftandrightwheelsrotateatthesameangle.()第10题Whenthecarisinmotion,thetiresalwaysengageinpurerollingmotion.()task6第1题Impropercoordinationbetweenfrontwheelcamberandtoeincanleadtoincreasedabnormaltirewear.()第2题Thefronttoeistoolargeandthesteeringisheavy,sothesmallerthefronttoevalue,thebetter.()第3题Theinclinationangleofthemainpinhasadualeffectofmakingsteeringdifficultandlabor-saving.()第4题Ifthecasterangleistoosmall,itiseasyforthefrontwheelstoswayandthesteeringwheeltoswaywhenthecarisdrivinginastraightline.()第5题Themagnitudeofresistanceencounteredbyacarduringsteeringisrelatedtothesteeringwheelalignmentangle.()第6题Thefour-wheelalignmentparametersincludethefrontwheeladvanceangle.()第7题Whenperformingfour-wheelalignmentonacar,aliftisrequired.()第8题Improperfour-wheelalignmentcanleadtoabnormalwheelwear.()第9题Onefunctionofthewheelcamberangleistobringthewheelsbacktonormal.()第10题Carsshouldundergoafour-wheelalignmentcheckeverytwoyears.()task7第1题Theclutchinanautomatictransmissionisoperatedandcontrolledmechanically.()第2题Inahydraulictorqueconverter,thetorqueofthepumpwheelincreasesduetotheactionoftheguidewheel.()第3题PlanetarygearmechanismscanbedividedintoSimpsontypeandfixedshafttypeaccordingtotheircombinationforms.()第4题Thesolenoidvalvesinautomatictransmissionscanbedividedintoswitchtypeandlinearpulsetype.()第5题Onlywhenthe"O/DOFF"indicatorlightisoffcantheautomatictransmissionshifttooverdrive.()第6题VehiclesequippedwithautomatictransmissionscanonlystarttheengineinPandNpositions.()第7题Theshiftsignaldeviceofahydraulicautomatictransmissionconsistsofathrottlevalveandaspeedcontroller.()第8题Equippingthesamevehiclewithanautomatictransmissionismorefuel-efficientthanequippingitwithamanualtransmission.()第9题Theplanetarygeartransmissiondeviceintheautomatictransmissioncanplayareverserole.()第10题Automatictransmissionisactuallyacontinuouslyvariabletransmission.()第11题Drivingonfrequ