雨课堂学堂在线学堂云Mechanical and Electrical Equipment Installation and Maintenance机电设备安装与维修单元测试考核答案

注：不含主观题第1题多选题(2分)Theinstallationofelectromechanicalequipmentinrailtransitindustryincludes()AvehicleandtrackBsignalandcommunicationCstationareaelectromechanicalequipmentDsystempowersupply正确答案：ABCD第2题多选题(2分)Themainproblemsexistingintheinstallationofelectromechanicalequipmentintheconstructionindustryinclude()AelectricalequipmentinstallationproblemBpipelineinstallationproblemClightningprotectiongroundingproblemDmechanicalvibrationproblem正确答案：ABC第3题多选题(2分)Commonsimplehoistingappliancesinclude()ApulleysandblocksBaxlesCslopesDcrowbarsandrollers正确答案：ABCD第4题多选题(2分)Therolesoffoundationare()AtobearalltheloadsofelectromechanicalequipmentanditsfoundationBtobearallkindsofinertiaforceswhenthemachineisrunningCtoensurethatthereisnooverallorlocalsettlementDtoeliminatetheinfluenceofgroundwater,quicksandandloosesoil正确答案：ABCD第5题多选题(2分)Commonlyusedfoundationreinforcementmethodsinclude()AvibratorycompactionmethodBsoilreplacementcushionmethodCcompactionmethodDgroutingmethod正确答案：ABCD第6题多选题(2分)Anchorboltsusedintheinstallationofelectromechanicalequipmentinclude()AfixedanchorboltBmovableanchorboltCexpansiveanchorboltDgasketanchorbolt正确答案：ABC第7题多选题(2分)Tasksofmechanicalandelectricalequipmentinstallersare()AtoinstallthemechanicalandelectricalequipmentcorrectlyinthepredeterminedpositionaccordingtotheprocessregulationsBtocleanandassemblethemachinebeforeinstallationCtocheckanddealwiththedeformation,damageandlossofthemachineduringtransportationandstorageDtocooperatewiththeacceptancepersonneltocompletetheacceptanceofthemechanicalandelectricalequipment正确答案：ABCD第8题多选题(2分)Thecommonlyusedcleaningfluidafterdisassemblyofelectromechanicalequipmentinclude()AorganicsolventBalkalinesolutionCchemicalcleaningsolutionDhotwater正确答案：ABC第9题多选题(2分)Thestandardsforhandoverandacceptanceofelectromechanicalequipmentare()AcompletingtheconstructionaccordingtothecontractandtherequirementsofthedesigndrawingsBmeetingthequalitystandardsstipulatedbythestateCmeetingtherequirementsforuseDtheauxiliaryfacilitiesareinnormaloperationEtheequipmentcommissioningandtrialoperationmeetthedesignrequirementsandtimelimitFthetechnicaldataandfilesarecomplete正确答案：ABCDEF第10题判断题(1分)Duringtheinstallationandmaintenanceofelectromechanicalequipment,plierscanbeusedinsteadofwrenchtotightenorloosenscrews,nutsandotherangularworkpieces.第11题判断题(1分)Whenmeasuringthelevelnessofaplaneoraworkpiecewithalevel,thelevelcanbedraggedaroundthemeasuredplaneforspeedandconvenience.第12题判断题(1分)Themovablepulleymoveswithheavyobjectswheninuse;Themovablepulleyisessentiallyaleverwhosepowerarmistwicethatoftheresistancearm,saving1/2forceandspending1timemoredistance.第13题判断题(1分)Whenlooseningthejacktomakeheavyobjectsfall,checkwhethertheheavyobjectsarefirmlysupported,andlowerthemslowlytoensuresafety.第14题判断题(1分)Hydraulicforkliftmustworkunderratedload,anditsmovementshouldbecarriedoutonflatground.第15题判断题(1分)Whenhoistingthesteelwirerope,itcannotbetortuousatanacuteangleorpressedflat;Whenthewireropeisindirectcontactwiththesharpcornersofequipmentcomponents,itisnecessarytopadwoodenblocks第16题判断题(1分)Expansiveanchorboltsaresimpleinconstruction,accurateinpositioning,donotneedtobeembedded,buttheburieddepthisshallow,andtheyareeasytofailwhenimpactedandvibrated第17题判断题(1分)Aftertheconcretepouringofelectromechanicalequipmentfoundationissolidified,electromechanicalequipmentcanbeinstalledwithoutmaintenance.第18题判断题(1分)Whenunpackingmechanicalandelectricalequipment,itisnecessarytocheckwhethertheouterpackagingisintact,whetherthereisanydamagetomechanicalandelectricalequipmentcausedbydamagedpackaging,whetherthereisdeformation,damp,corrosionorshortageofquantity第19题判断题(1分)Thefunctionofsizingblockistoadjusttheelevationandlevelnessofelectromechanicalequipment,andmakealltheweightofelectromechanicalequipmentevenlytransmittedtothefoundationthroughsizingblock,soastoreducethevibrationofelectromechanicalequipment第20题判断题(1分)Thewiresofelectromechanicalequipmentarelaidasfarawayfromelectromagneticinterferencesourcesaspossible.Thewirescanbeprotectedbyshieldingthroughsteelpipesonsite.Theprotectivesteelpipescanbefirmlyfixedonthebracketwithclipsandcanbefixedbywelding.第21题判断题(1分)Mechanicalandelectricalsystemsbearingairpressureandhydraulicpressure,pressurevesselsinequipment,variousheatexchangers,varioustypesofpressurepipelinesystems,andvarioustypesofmechanicalandelectricalequipmentrequiringpressuretestafterinstallationmustundergopressuretestafterassembly.Test2第1题多选题(2分)Accordingtothematerialformoflubricants,lubricantscanbedividedinto()AgaslubricantBliquidlubricantCsemi-solidlubricantDsolidlubricant正确答案：ABCD第2题多选题(2分)Lubricatingoilcanbedividedinto()AminerallubricatingoilBsyntheticlubricatingoilCvegetablelubricatingoilDengineoil正确答案：ABC第3题多选题(2分)Mechanicalimpuritiesinlubricatingoilcan()AdestroyoilfilmBintensifyabrasionandearlywearonthesurfaceofpartsCblockoilpassagesandfiltersDreducetheinsulationperformanceoftransformeroil正确答案：ABCD第4题多选题(2分)Thebasisforaffectingtheselectionoflubricatingoilare()AbearingloadBmovingspeedandstateCworkingtemperatureandenvironmentDlubricationmode正确答案：ABCD第5题多选题(2分)AccordingtoLubricatingdevicescanbedividedinto()accordingtodifferentoilsupplymodesoffrictionpairsApressurelesslubricationandpressurelubricationBintermittentlubricationandcontinuouslubricationCoutflowlubricationandcirculatinglubricationDoillubricationandgreaselubrication正确答案：ABC第6题单选题(1分)Lubricatingmaterialshallbeintroducedintothefrictionsurfaceat()AminimumfilmloadBmaximumfilmloadCarbitraryposition第7题多选题(2分)Lubrication"fivefixed"includes()AfixedspotBfixedqualityCfixedquantityDfixedscheduleEfixedpersonFfixedtool正确答案：ABCDE第8题单选题(1分)Accordingtolubricationsystemofslidingbearing,undernormalworkingconditions,oilcuplubricationisadopted,whichrequires()AonceeveryfivedaysandeverythreemonthsBonceeveryweekandeverythreemonthsConceeverytwoweeksandeverysixmonthsDonceeverythreedaysandeverymonth第9题多选题(2分)Requirementsforequipmentmaintenance(）AneatBcleanCgoodlubricationDsafety正确答案：ABCD第10题判断题(1分)Atpresent,allcountriesintheworldusedynamicviscositytomarkthegradeoflubricatingoilinordertoindicateitsviscosityrange第11题判断题(1分)Lubricatingoilwillchangebecauseofoxidationduringuseorstorage,andthedegreeofdiscolorationisrelatedtothedegreeofdeterioration.第12题判断题(1分)Lubricatingoilisverysensitivetothechangeoftemperature,andtheviscositybecomeshigherwhenthetemperaturerises第13题判断题(1分)Thegreatertheconepenetrationofthegrease,thesmallertheconsistencyofthegrease,thebetterthepressuredelivery,anditisnoteasytobeextrudedfromthefrictionsurfacesunderheavyloadconditions第14题判断题(1分)Theviscosityofsubstitutelubricatingoilshouldbeequaltoorslightlyhigherthanthatoforiginaloil;Theperformanceofsubstituteoilshouldbeclosetothatoforiginaloil.第15题判断题(1分)Theoilgrooveoflubricatingoilshallnotbesetintheoilfilmbearingarea第16题判断题(1分)Replacedwasteoil,exceptforself-processingandregeneration,shouldbedumpedandscrapped第17题判断题(1分)First-classmaintenance(oneguarantee)ismainlyoperatedbyoperatorsandsupplementedbymaintenanceworkers,whichisaplannedmaintenance,alsocalledregularmaintenance第18题判断题(1分)Forpowerequipment,largecontinuousproductionequipment,hoistingequipmentandequipmentthatmustensuresafeoperationandsignificanteconomicbenefits,itisnecessarytoarrangemajormaintenanceatanappropriatetime第19题判断题(1分)Generallyspeaking,forthemechanicalandelectricalequipmentoverhauledforthefirsttime,itsaccuracyandefficiencyshouldmeetthefactorystandards,andtheequipmentoverhauledformorethantwotimeshasloweraccuracyandefficiencythanthenewequipment,soitisusuallyusedfordownshift.Test3第1题多选题(2分)Importantcausesofmechanicalandelectricalequipmentfaultinclude()AinstallationandcommissioningdidnotmeetthequalitystandardsofequipmentBoperatorsdidnotoperateaccordingtoregulationsCroutinemaintenancedidnotfollowtheplan,etc.Dpurchasedequipmentdidnotmeetthetechnicalandperformancerequirementsrequiredforuse.正确答案：ABC第2题多选题(2分)Partdeformationisdividedinto()AelasticdeformationBplasticdeformationCcreepDjump正确答案：ABC第3题多选题(2分)Classificationofelectricalcontactinelectromechanicalequipment()AfixedcontactBslidingcontactCdetachablecontact正确答案：ABC第4题多选题(2分)Thetypicalimplementationprocessoffaultdiagnosisofelectromechanicalequipmentcanbesummarizedintothefollowingaspects()AsignalacquisitionBsignalprocessingCstateidentificationDdiagnosisdecision正确答案：ABCD第5题多选题(2分)Faultdiagnosisofelectromechanicalequipmentshallbeperformedin()AfirstsayingandthendoingBfirstexternalandtheninternalCfirstmechanicalandthenelectricalDfirstcleaningandthenmaintenanceEfirststaticandthendynamicFfirstpowersupplyandthenequipmentGfirstinterfaceandthencomponentsHfirstDCandthenACIfirstuniversalandthenspecialJfirstrepairandthendebugging正确答案：ABCDEFGHIJ第6题多选题(2分)()areavailabletotesttheshapeandpositionaccuracyofmechanicalpartsAlevelBcollimatorCfeelergauge,anglegaugeDmicrometer,dialindicator正确答案：ABCD第7题多选题(2分)typicalmechanicalpartswearcurveisdividedinto()AinitialwearstageofpartsBnormalwearstageofpartsCseverewearstageofparts正确答案：ABC第8题多选题(2分)Themainformsofpowergridoperatingconditionschangeinclude()Athree-phasepowersupplyasymmetryBthree-phaseloadasymmetryCneutralpointoffset正确答案：ABC第9题判断题(1分)Thephenomenonthatthepartsofelectromechanicalequipmentlosetheirspecifiedfunctionsandcannotcontinuetoworkiscalledfault.Whenthekeypartsofelectromechanicalequipmentfail,itmeansthattheequipmentisinafaultstate第10题判断题(1分)Correctmaterialselection,reasonabledesign,protectivecoating,electrochemicalprotection,addingcorrosioninhibitorandchangingenvironmentalconditionscanreducethecorrosionofmetalmaterials.第11题判断题(1分)Replacingtheoriginalelectricalcontactmaterialsrandomlywillnotaffecttheperformanceofelectricalcontact第12题判断题(1分)Thefaultsofelectromechanicalequipmentarenotonlycausedbysinglemechanicalpartsandelectricalsystems,butalsocausedbytheirmutualinfluenceandinteraction.第13题判断题(1分)Thefaultdiagnosisofelectromechanicalequipmentshouldfocusondailymaintenanceandcontinuousmonitoring,andsolvetheproblemsthatcausethefaultbeforethefaultoccurs.第14题判断题(1分)Installingmagnetandchipcollectingroominhydraulicsystemcaneffectivelyreduceabrasivewear第15题判断题(1分)Theprobabilityofcorrosionfailureofelectromechanicalequipmentinthesouthishigherthanthatinthenorth第16题判断题(1分)Faultdiagnosisofelectromechanicalequipmentmainlyreferstothediagnosisafterfault第17题判断题(1分)Themoreprecisetheinstrumentis,theeasieritistodetectthefaultofelectromechanicalequipment第18题判断题(1分)Faultsofelectromechanicalequipmentmostlyrefertofaultscausedbyimpropermaintenanceandcommissioning,violationofoperatingproceduresoruseofunqualifiedpartsandmaterialsTest4第1题多选题(2分)Workpiecesurfacestrengtheningtechnologyincludes()AsurfacedeformationstrengtheningBsurfaceheattreatmentstrengtheningCsurfacechemicalheattreatmentstrengtheningDsurfacefrictionstrengthening正确答案：ABC第2题多选题(2分)Theshape(s)oftheheatingareaofthethermalcorrectionmethodinclude(s)()Astrip(inuniformdeformationanddistortion)Bserpentine(inseveredeformation,largehotarearequired)Crounddot(slendershaftpartsafterfinishing)正确答案：ABC第3题多选题(2分)Electroplatingcanbeusedtorepairparts()AwithlittlewearBrequiringhighprecisionCwithcomplexshapeandstructureDwithalargebatchEneedingaspeciallayer正确答案：ABCDE第4题多选题(2分)Accordingtothetypeofheatsourceforheatingsprayingmaterials,thetypesofthermalsprayingrepairtechnologyinclude()AflamesBarcCelectrothermalDlaser正确答案：ABCD第5题多选题(2分)Advantagesofbondingtechnologyinclude()AbondingisnotlimitedbymaterialBbondingcanreducestructuralweightCgoodsealingperformanceandchemicalstabilityDsimpleprocess正确答案：ABCD第6题多选题(2分)Electricalsystemfaultsofelectromechanicalequipmentare()AshortcircuitfaultBleakagefaultCopencircuitfaultDdeteriorationfault正确答案：ABCD第7题多选题(2分)Commonmethodsfortroubleshootingelectricalsystemofelectromechanicalequipmentinclude()AvisualinspectionBmultimetermeasurementCwaveformDstandardsignalinputEsubstitutionFshortconnection正确答案：ABCDEF第8题多选题(2分)Thecontrolsystemoflow-voltageelectricalappliancesiswidelyused,mainlyplayingthefunctionof()AcontrolandprotectionBmeasurementandregulationCindicationandconversion正确答案：ABC第9题多选题(2分)Commoncausesofinverterdamageinclude()ApooruseenvironmentandpoormaintenanceBimproperparametersettingCincorrectinputsignalorimproperwiringDmismatchedloadorincorrectsystemdesign正确答案：ABCD第10题多选题(2分)Theinspectionmethodsoffrequencyconverterfaultsinclude()AinspectionofrectifiercircuitBinspectionofintermediatecircuitCinspectionofdrivingcircuitDinvertermoduleinspectionEI/OinterfaceinspectionFwholemachineinspection正确答案：ABCDEF第11题多选题(2分)Theinspectionsofmaintenancequalityofelectromechanicalequipmentinclude()AinspectionofassemblyqualityBinspectionofgeometricaccuracyCinspectionofinsulationDinspectionofdynamicandstaticbalance正确答案：ABCD第12题多选题(2分)Thereasonforrotormassimbalanceisthatthecenterofgravityoftherotatingpartisoffsetfromthecenterofrotationcausedby()AerrorsintheprocessingandmanufacturingofrotatingpartsBunevenqualityofrotatingpartsCdeviationbetweentheinstallationofrotatingpartsandshaftsDcomponentmovementonrotatingparts正确答案：ABCD第13题判断题(1分)Theremaybemanykindsofdamagedefectsforacertainkindofmechanicalpartsatthesametime,ortheremaybeseveraldifferentrepairmethodsandtechnologiesforacertainkindofdamagedefects第14题判断题(1分)Applyingbondingtechnologytorepairwornpartscannotonlyrestorethedimensionsofwornparts,butalsoimprovetheconditionoffrictionsurfaceandprolongtheservicelifeofwornparts第15题判断题(1分)Onthepremiseofensuringtherepairquality,strivetoadopttheleastkindsofrepairtechnologiesintherepairscheme第16题判断题(1分)Whenformulatingtherepairprocessregulations,Deformationoflargerprocessesshouldbeinthefront,electroplating,sprayingandotherprocessesgenerallyinthepressureprocessingandsurfacingrepairafter第17题判断题(1分)Themethodofplasticdeformationrepairwillonlychangetheshapeofparts,butwillnotchangethemechanicalpropertiesandorganizationalstructureofmetals第18题判断题(1分)Bondingrepaircan'tbetestedbynondestructivetesting,soitsapplicationislimited第19题判断题(1分)Ifnoobviousdamageisfound,theelectricalsystemcanbeelectrifiedandchecked,andthecomponentsandjointscanbeobservedforsparking,smoking,abnormalnoiseandotherphenomena.Ifnecessary,cutoffthepowerimmediately第20题判断题(1分)Forsuspiciousfaultunitsormodules,thesametypeofpartialreplacement,orthesamefunctionofthesameelectromechanicalequipmentinthewayofswitchingwiringtofindthefaultmethod.第21题判断题(1分)Whentheremainingthicknessofthecontactsoflow-voltageelectricalappliancesislessthan1/3oftheoriginalthickness,newcontactsmustbereplaced第22题判断题(1分)Aluminumcoreconductorshallnotbeusedforcontrolloopwiringofelectromechanicalequipment第23题判断题(1分)Theelectricalsystemofelectromechanicalequipmentshallbetestedforinsulationbeforemaintenanceandacceptanceandhandover第24题判断题(1分)Forallrotatingpartsthathavefounddynamicbalance,thereisnoneedtofindstaticbalance,becausetheaccuracyofdynamicbalanceishigherthanthatofstaticbalanceTest5第1题多选题(2分)Atpresent,thecommonlyusedassemblymethodstoensurethefittingaccuracyinclude()AinterchangeassemblymethodBrepairassemblymethodCselectionassemblymethodDadjustmentassemblymethod正确答案：ABCD第2题多选题(2分)Becauseofsealfailure,thephenomenonof"threeleaks"oftenoccurs()AoilleakageBwaterleakageCAirLeakageDElectricityLeakage正确答案：ABC第3题多选题(2分)Inspectionofdisassemblyprocessofmechanicalequipmentisdividedinto()AinspectionbeforerepairBinspectionatanytimeCinspectionafterrepairDassemblyinspection正确答案：ACD第4题多选题(2分)Thecontentsofinspectioninclude()AthegeometricalprecisionofthepartBthesurfacequalityofthepartCthemechanicalpropertiesofthepartDtheinspectionofthehiddendefectsofthepart正确答案：ABCD第5题多选题(2分)Thecommonlyusedhotchargingmethodsinclude()AhotdipBoxyacetyleneflameheatingCresistanceheatingDsolidfuelEelectricinductionheating正确答案：ABCDE第6题多选题(2分)Thepositionalrelationshipsbetweencouplingsinclude()AaxialdisplacementBradialdisplacementCangulardisplacementDcomprehensivedisplacement正确答案：ABCD第7题多选题(2分)Theassemblymethodsofrollingbearingmainlyinclude()AhammeringmethodBpress-inmethodCtemperaturedifferencemethodDhydraulicsleevemethod正确答案：ABCD第8题多选题(2分)Theinspectionofgearbacklashcanberealizedby()method.AfeelergaugeBdialindicatorCleadwireDlevelmeter正确答案：ABC第9题多选题(2分)Sealsforfixedconnectionsinclude（）AclosesealBsealantsealCgasketsealDweldingseal正确答案：ABC第10题多选题(2分)Themethodstorestoretheaccuracyofdimensionchaininclude()AusingtheoriginaladjustingpartBreplacingtheoriginaladjustingpartCaddingtheadjustingpart正确答案：ABC第11题判断题(1分)Inordertoensurethesealingperformance,wheninstallingvariousgaskets,donotsmearall-losssystemoil第12题判断题(1分)Aftertheassemblyofeachcomponent,itmustbecarefullyinspectedandcleanedtopreventmissingorwrongparts,andtopreventaccidentscausedbystoringredundanttoolsandpartsinthebox.第13题判断题(1分)Thecleaningandcleaningofpartsinassemblyprocessplaysanimportantroleinimprovingassemblyqualityandprolongingtheservicelifeofproducts.第14题判断题(1分)Theprincipleofthesameforceusedfordisassemblyandassemblyshouldbeadheredtoforshaftholeassembly第15题判断题(1分)Thematchingpropertyofkeyandkeywayisobtainedbychangingthelimitsizeofshaftgrooveandhubgroove第16题判断题(1分)Thesizeofthesamplerodusedinthehotchargingmethodshallbemadeaccordingto2timesoftheactualinterferenceamount第17题判断题(1分)Theflushofthetwocylindricalsurfacesofthecouplingindicatesthattheconnectedtwoaxesareconcentric第18题判断题(1分)Rollingbearingclearanceistoolarge,equipmentvibrationislarge,rollingbearingnoiseislarge第19题判断题(1分)Intheassemblyprocess,thesealingelementcanbedirectlyknockedwithtools第20题判断题(1分)Whengearswithsmallinterferenceareassembledwithshafts,theycanbehammeredwithcopperhammerorwoodenhammerTest6第1题多选题(2分)ThefaultclassificationsofCNCmachinetoolsare()AsuddenandgradualfaultBcompleteandpartialfaultCmisoperationandbodyfaultDdestructiveandnon-destructivefaultEassociatedandnon-associatedfault正确答案：ABCDE第2题多选题(2分)CNCmachinetoolmaintenancepersonnelshouldhave()Acomputernumericalcontrol(CNC)systemknowledgeBfamiliarityinmachinetoolelectricalcontrol,mechanicalstructure,processingtechnologyandotherknowledgeCunderstandingofthebasicoperationofmachinetoolsDstrongsenseofresponsibilitya