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）(重庆工程职业技术学院)单元测试考核答案

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