第1題Independentoftheproductmaintainabilitydefinitionisoption().APrescribedconditionBPrescribedtimeCPrescribedprocedureDPrescribedplace第2題Ingeneral,whichofthefollowingtimefactorsismainlyconsideredformaintainability?()AWaitingtimeformaintenancepersonnelandcomponents.BTransportationtimeofmaterialsandequipment.CWorkshopmanagementandschedulingtime.DManualrepairtimeoffaultunitofthesystem.第3題Availabilityonlyindicatestheprobabilitythatthecomponentisnowinanonfaultstate,regardlessofwhetherthecomponenthasfailedbefore.Therefore,theavailabilityofthesystemisnotlessthanthereliability.Isthisstatementcorrect?()ACorrectBWrong第4題ForanyeventAandB,thefollowingdescriptioniscorrect().

AIfABisnotempty,thenAandBmustbeindependentBIfABisnotempty,thenAandBmaybeindependentCIfABisempty,thenAandBmustbeindependentDIfABisempty,thenAandBmustnotbeindependent第5題Thecorrectstatementaboutthenormaldistributionis().

AThefailurerateλforanormaldistributionisequaltoaconstantBThenormaldistributionissymmetric,anditsmainparametersaremeanμandvarianceσ2,denotedasN~(μ,σ2)CThemeanμdeterminesthepositionofthenormaldistributioncurveandrepresentsthecentraltendencyofthedivisionDThevarianceσ2determinestheshapeofthenormaldistributioncurveandrepresentsthedegreeofdispersionofthedistribution正確答案：BCD第6題Thecorrectstatementaboutparameterestimationis().APointestimatorsforpopulationparametersuseasinglevalueofthestatistictoestimatethevalueofalocationparameter.BInthecaseofagivenconfidencelevel(1-α),themethodofestimatingtheupperandlowerconfidencelimitsofunknownparametersisbilateralintervalestimation,alsoknownasbilateralestimation.CInthecaseofagivenconfidence(1-α),themethodofonlyestimatingthelowerorupperconfidencelimitoftheunknownisone-sidedintervalestimation,alsoknownasone-sidedestimation.DAlloftheabovearecorrect第7題Whichofthefollowingmethodscangreatlyimproveproductreliability?().ALowertheconfidencelevelBReducevariablesCIncreasethesamplesizeDExtendthetesttime第8題Theprobabilityofasinglemissilehittingthetargetis0.7,andwhenitisfiredthreetimesinarow,theprobabilityofhittingthetargetis().A0.889B0.923C0.973D0.98第9題Abatchofboltsisthreepercentdefectiveandabatchofnutsistwopercentdefective.Aunitisformedwithonenutandonebolt.Findtheprobabilitythatarandomlyselectedunitisdefective.A0.05B0.0006C0.0494D0.0506第10題Inherentavailabilityexcludes:I.CorrectivemaintenancedowntimeII.PreventivemaintenancedowntimeIII.LogisticdowntimeIV.AdministrativedowntimeA

IIandIIBIIandIVCIandIIDIIIandIV第1題ThecircuitconsistsofbatteryXconnectedinserieswithtwoparallelbatteriesY.LettheprobabilityofbatteryXandYdamagebe0.3and0.2respectively,andwhethereachbatteryisdamagedornotisindependent.Thentheprobabilityofcircuitfailureduetobatterydamageis().A0.662B0.268C0.328D0.732第2題Nomatterhowcomplexthestructureofthecomponentsinthesystemis,thesystemreliabilitycanbedecomposedintoseveralseriesorparallelrelationships.Isthisstatementcorrect?()ACorrectBWrong第3題Anaircraftengineiscomposedofthreemodules,andthefailurerateisconstant,whereλ1=0.002/h,λ2=0.015/h,λ3=0.0025/h.Then,thereliabilityfunctionoftheengineis().AR(t)=e^0.0105tBR(t)=e^-0.0105tC

R(t)=e^0.0195tDR(t)=e^-0.0195t第4題Thefailuredistributionwithconstantfailurerateiscalled(),whichisoneofthemostimportantreliabilitydistributionfunctions.

AWeibulldistributionBLognormaldistributionCNormaldistributionDExponentialprobabilitydistribution第5題IfthereliabilitydistributionofamotorisexponentialandtheMTBFis7500hours,theprobabilityofnofaultinonemonth(30days)is().A0.832B0.908C0.946D0.882第6題Intheseriessystem,thesystemreliabilitymustnotbegreaterthanthereliabilityvalueofeachcomponent.Isthisstatementcorrect?()A

CorrectB

Wrong第7題Foraparallelsystemcomposedoftwoormorecomponents,thesystemwillfailonlywhenallcomponentsinthesystemfail.Isthisstatementcorrect?()ACorrectBWrong第8題LetthepopulationX~N(μ,0.09),randomlydraw4samples,andtheaveragevalueoftheobservedvalueisx_bar=5,thenthe95%confidenceintervalofthepopulationμis().KnownP

σisthestandarddeviationofX,andZ0.025=1.96.A[4.706，5.294]B[4.706，5.942]C[4.670，5.294]D[4.670，4.706]第9題ThefailuredistributionfunctionofaproductisF(t)=1?e?(tη)2,whereη>0,thenthefailureratefunctionoftheproductis().

AIncreasedovertimeBDecreasingovertimeCConstantDIncreaseanddecrease第10題Asystemis95%reliablewhentheMTBFis500hoursandthemeantimetorepairis().A

22

hoursB26

hoursC133

hoursD167

hoursCH3Exercises第1題Asshowninthefigurebelow,thesystemconsistsofthreeunits,andallfollowsexponentialdistribution.Thefailurerate,λ3=1×10?4/h,andtheMTBFofthesystemis().

A1159.4hB860.9hC878.2hD281.2h第2題Theparallelseriessystemis

showninFig.(a)andseriesparallelsystem

isshowninFig.(b).Eachofthetwosystemscomposedof2nunits.Assumingthatthefailureofeachunitisindependent.Reliabilityofparallelseriessystemis().ABCD第3題Reliabilityofseriesparallelsystem

is().ABCD第4題

Ifamotorhas6faultswithin45000hoursofoperationandisrepaired,itsMTBFis().A9000hB7500hC15000hD5625h第5題Ifthenumberoffailuresiscompletelydeterminedbythenumberofindependentrandomeventsandhasnothingtodowiththesystemlife,itcanbeinferredthatthefailurerateofthesystemisconstant.Isthisstatementcorrect?()ACorrectBWrong第6題Thefailurerateofamicrowavetransmitterisconstant,whichis0.00034timesperhour,soitsreliabilityfunctionisR(t)=e^-0.00034t,thenitsreliabilityforcontinuousoperationfor30daysis().A0.77549B0.85692C0.82561D0.78286第7題Asystemconsistsoffivedevices,asshowninthefigurebelow.ThereliabilityoftheXdeviceis0.9900.Thereliabilityoftheotherfourdevicesisthesame.Ifthesystemreliabilitytargetis0.9896,thentheminimumreliabilityofdeviceYisatleast()?A0.980B0.985C0.990D0.995第8題Thexandyaxesofthebathtubcurverepresent().

Atime,reliabilityBReliability,timeCTime,HazardRateDHazardrate,time第9題Thefollowingdistributionsarecontinuousrandomvariables:().ABinomialdistributionBNormaldistributionCExponentialdistributionDPoissondistribution正確答案：BC第10題Theroleofreliabilitypredictionis().AChecktherationalityofthereliabilityassignmentBVerifywhetherthereliabilityindexrequirementsaremetCQuantitativeAllocationReliabilityDFindDesignWeaknesses正確答案：ADCH4Exercises第1題ProactiveactionmustbeimplementedwhenRPN>100?()ATureBFalse第2題FMEAisa(

)tool?

AProcessanalysisBResourcesharingCRiskassessmentDProjectplanning第3題WhatfactorsinfluencetheresultsofRiskPriorityNumber(RPN)?()ASeverityBProbabilityCDetectabilityDMaintainability正確答案：ABC第4題WhichofthefollowingoptionsbelongstoFailureModeandEffectsAnalysis(FMEA)?()ASystemFailureModeandEffectsAnalysisBDesignFailureModeandEffectsAnalysisCManufactureFailureModeandEffectsAnalysisDProcessFailureModeandEffectsAnalysis正確答案：ABD第5題HowmanyratinglevelsforRPNfactors?()A8B5C3D10第6題WhatistheformulaforcalculatingRPN?()ASeverity*Probability*MaintainabilityBProbability*Detectability*MaintainabilityCSeverity*Detectability*MaintainabilityDProbability*Detectability*Severity第7題TheFMEAisdynamicinformationwhenstartedandcanbeadjustedasneeded?()ATureBFalse第8題WhichofthefollowingprocessesinvolveFMEA?()AProductfailedBProduct/processdesignCProductverificationDCustomerfeedback正確答案：ABCD第9題WhenconductinganFMEAtherpnvalueiscalculatedusingtheformularpn=SxOxD.ThesymbolsS,OandDstandfor()Asensitivity,occurrence,detectionBseverity,occurrence,detectionCseverity,operable,detectionDseverity,occurrence,development第10題WhichofthefollowingarethetypicalcomponentsinaFMEAusedtodefinethepriorityforaddressingpotentialfailuremodes?AOccurrence,Severity,PreventionBOccurrence,Prevention,SafetyCOccurrence,Severity,DetectionDOccurrence,Safety,DetectionCH5Exercises第1題Theminimumcutsetofthesystemshownbelowincludes().

Ax1x3,

x2x4,x1x4x5,x2x3x5Bx1x2,x3x4,x1x4x5,Cx1x2x3,x4x5,Dx1x2x5,x1x4x5第2題Theminimumcutsetis()fortheoccurrenceoftopevent.AsufficientandnecessaryconditionsBsufficientandunnecessaryconditionsCnecessaryandinsufficientconditionsDunnecessaryandinsufficientconditions第3題Whichofthefollowinglogicaloperationsarecorrect().

AA*(B+C)=A*B+A*CB(A*B)+(C*D)=A*B+C*DC(A+B)*(C+D)=A*C+B*DDA*(B+C)=A*B+C正確答案：AB第4題FTAmainlyincludeeventsymbols,(

)andtransfersymbols.

ASetsymbolsBArithmeticsymbolsCLogicalsymbols第5題

Faulttreeisadirectionaltreedescribingthe()offailure?

AOccurrenceprocessBCausalrelationshipCCorrelationDCause第6題Faulttreeanalysisisa()riskAssessmentmethod.

ATopdownanddeductiveBBottomupanddeductiveCTopdownandinductiveDBottomupandinductive第7題WhichofthefollowingstatementsaboutFTAiscorrect?()AAssumesfailureofthefunctionalityofaproductBAssumesfailureofcomponentofaproductCIdentifiestherootcauseoffunctionalfailureDIdentifiesfunctionalfailureasaresultofcomponentfailure正確答案：AC第8題Infaulttree,()indicatesthebasiccauseevent,()indicatestheundevelopedevent.()ARectangle,rhombusBEllipse,rectangleCCircular,rhombusDRhombus,circular第9題Inafaulttreeanalysis(FTA)twosystemsarejoinedinparallelsothattheoverallsystemwillnotfailuntilbothsystemsfail.Thefirstsystemhasareliabilityof0.9805.Thesecondsystemhasareliabilityof0.9795.Whatisthereliabilityofthenexthighersystem?A0.9604B0.0396C0.9996D0.4000第10題Thecorrectstatementaboutthefaulttreedescendingmethodis().ATheANDgateonlyincreasestheorderofthecutsetBTheORgateonlyincreasestheorderofthecutsetCTheANDgateonlyincreasesthenumberofcutsetsDORgatenotonlyincreasesthenumberofcutsets,butalsoincreasestheorderofcutsetsCH6Exercises第1題Thefactorsaffectingproductmaintainabilitycanbedistinguishedaccordingtothedegreeofimportance.Therelativelylowerimportanceofthefollowingfactorsis().AproductmodularityBequipmenttypeCproductinterchangeabilityDlevelofmaintenanceteam第2題Inthefollowingmaintenancetypes,thecorrectorderofmaintenancelevelfromlowtohighis().①Maintenanceprevention.②Correctivemaintenance.③Preventivemaintenance.

④ContractedMaintenance.⑤Autonomousmanagement.A

④,①,②,③,⑤B

⑤,③,②,①,④C⑤,②,③,①,④D④,③,②,①,⑤第3題Whichofthefollowingoptionsisnotaprincipleobjectiveofsystemmaintenance？()AMinimizethefrequencyofsysteminterruptionandtheseverityoftheconsequences.BAchieveproductqualitybyadjustingandrepairingequipment.CControlthemaintenancecost,nomaintenanceworkisrequiredbeforethesystemisinterruptedbyfault.DMaximizeproductioncapacitythroughhighutilizationofthesystem.第4題Generally,thehigherthedegreeofpreventivemaintenanceofthesystem,thelowerthecorrespondingmaintenanceandrepaircost.Isthisstatementcorrect?()ACorrect.BWrong.第5題()iscarriedoutwithinpredeterminedtimeintervals,whichareestimatedbasedonhistoricaldata,systemfailuretimedistribution,economicmodeloravailabilitymodel.APreventivemaintenanceBCorrectivemaintenanceCAdaptivemaintenanceDPerfectivemaintenance第6題Amongthefollowingfaultcauses,themostunlikelycauseofgeartransmissionmechanismfailureis().AabnormalstressBcapacitorshortcircuitCagingandwearDmaterialfatigue第7題Inthefollowingmaintenancetypes,thecorrectorderofmaintenancelevelfromlowtohighis()①Maintenanceprevention.②Correctivemaintenance.③Preventivemaintenance.④ContractedMaintenance.⑤Autonomousmanagement.A④,①,②,③,⑤B⑤,③,②,①,④C⑤,②,③,①,④D④,③,②,①,⑤第8題Generally,thehigherthedegreeofpreventivemaintenanceofthesystem,thelowerthecorrespondingmaintenanceandrepaircost.Isthisstatementcorrect?第9題Thefactorsaffectingproductmaintainabilitycanbedistinguishedaccordingtothedegreeofimportance.TherelativelylowerimportanceofthefollowingfactorsisAproductmodularityBequipmenttypeCproductinterchangeabilityDlevelofmaintenanceteam第10題Whenisahighlyacceleratedlifetest(HALT)usuallyperformed?AWhenearlyprototypesorengineeringmodelsareavailableBWhenfinalprototypesorengineeringmodelsareavailableCWhenfirstproductionunitsareavailableDWhenunitsproducedperiodicallyduringproductionareavailableCH7Exercises第1題Theintegratedpredictiveproductivityisfocuson().AOverallProductivityBEquipmentUtilizationCIntelligentMaintenanceDAlloftheabove第2題WhichofthefollowingisassociatedwithIMS?()AERPBSCM,CCRMDAlloftheabove.第3題Whatistherequirementforpredictivemaintenance?()APredictiveintelligenceBSynchronizationintelligenceCOperationsintelligenceDAlloftheabove第4題IMSistheshortforintelligentmaintenancesystems.Isthisstatementcorrect?()ACorrectBWrong第5題WhichofthefollowingisnotthefunctionofIMS?().AAutomaticrepairequipmentandsoftwarefailure.BMakeearlywarningandsuggestionsforrisks.CAnalyzeandpositionthecausesandsourcesofrisks.DPerceiveandpredictequipmenthealthandbusinessoperation.第6題Intheactualproductionprocess,rationalapplicationofintelligentpredictioncanreduceresourceloss.Isthisstatementcorrect?（）ACorrectBWrong第7題"Themeasureoftheabilityofanitemtoberetainedinorrestoredtospecifiedconditionwhenmaintenanceisperformedbypersonnelhavingspecifiedskilllevels,usingprescribedproceduresandresources,ateachprescribedlevelofmaintenanceandrepair"isthedefinitionofwhichofthefollowing?AAvailabilityBMaintainabilityCReliabilityDNoneoftheabove第8題Thebesttimetoworkonreducingcorrectivemaintenancetimeis:Aimmediatelyafterafailureoccurs.Bassoonastheequipmentisdelivered.Cassoonasfinaldesignorfinalprototypesareavailable.Dduringtheequipmentdesignphase.第9題Intheactivitynetworkdiagram(AND),ifanarrowpointsfromactivityYtoactivityXAactivityXmustbecompletedbeforeactivityYisbegunBactivityYcostsmorethanactivityXCbothactivitieslieonthecriticalpathDactivityYmustbecompletedbeforeactivityXisstarted第10題Thecorrectstatementabouttheproductreliabilityguaranteeprogramis().ATheformulationofthereliabilityassuranceprogramisaveryimportanttaskinreliabilitymanagement.Reliabilityengineersshouldbefamiliarwithandmasterthebasicmethodsandrequirementsforformulatingtheprogram.BForanyproduct,32workitemsmustbeincludedintheReliabilityAssuranceProgramCForanyproduct,thereliabilitygu