雨课堂学堂在线学堂云《Introduction to Ship Engineering（渤海船舶职业学院）》单元测试考核答案

第1题Modernshipbuildingtechnologyisdividedintothreedifferenttypes:hullandsuperstructureconstruction,outfittingandpainting,whichareneitherrelatednoraffecteachother.第2题Themodernshipbuildingmodelorganizesproductionaccordingtoasystemorientation.第3题Theshipbuildingmodelreferstothebasicprinciplesandmethodsoforganizingshipbuildingproduction.第4题Shipbuildingisanapplieddisciplinethatstudiesthemanufacturingmethodsandprocessesofsteelships.AWeldingofhullsBHullaccessoriesCsuperstructureDPowerequipment正确答案：AC第5题Themainapplicationprincipleofthemodernshipbuildingmodelis().AMergetechnologyBWeldingtechnologyCDecompositiontechniquesDGroupingtechniques第6题Shipproductsaredecomposedaccordingtotheprincipleofengineeringdecomposition,andtherearethreemaindecompositionmethods,whichareaccordingto(),()and().ATheconstructionislongBConstructionareaCProcessstageDThetypeofproductionjob正确答案：BCD第7题Accordingtotheprincipleofengineeringdecomposition,shipconstructionisdecomposedaccordingtotheconstructionarea,whichcanbedividedintothefollowing?ACabinareaBBallastzoneCCargocompartmentareaDSuperstructureresidentialarea正确答案：ACD第8题Accordingtotheprincipleofengineeringdecomposition,shipconstructionisdecomposedaccordingtotheprocessstage,whichcanbedividedintothefollowing?AHullconstructionstageBOutfittingstageCPilotphaseDPaintingstage正确答案：ABD第1题Theonlymaterialsusedforshipbuildingaremetal.第2题Theworkplacewheretheshipisfinallyassemblediscalledaslipwayordock.第3题Steelpretreatmentandnumberingworkbeginsafterthecomponentmachiningphase.第4题Steelpretreatmentreferstotheprocessofmechanicalleveling,(),()and()ofhullsteelplates.ASandblastingBRustremovalCBentshapeDPaintprotection正确答案：ABD第5题Thecomponentprocessingworkincludes()and()twoparts.AAssemblyofcomponentsBFormingprocessingCPlatelevelingDEdgemachining正确答案：BD第6题Theformingprocessingofwaterandfirebendingbelongstothecoldformingprocessing.第7题Whichofthefollowingisthegeneralmanufacturingorderofintermediateproducts?APart-Segment-TotalSegmentBSegment-Part-TotalsegmentCSegment-Totalsegment-PartDSegment-Part-Totalsegment第8题Therearemanywaystolaunchships,whichofthefollowingarecommon?ATidallaunchBGravitylaunchingCFloatinglaunchDMechanicallaunching正确答案：BCD第9题Shiptestingcanbedividedintotwophases,whichofthefirststagearethefollowing?ASailingtestsBDynamictestCMooringtestDTilttest正确答案：CD第10题Afterthecompletionofvarioustestsoftheship,theshipyardcanhandovertheshiptotheowner.2.1.2Assignments第1题Themainhullisawatertighthollowstructureenclosedby(),(),().ABottomoftheshipBsuperstructureCBroadsideDUpperdeck正确答案：ACD第2题Whichofthefollowingfallsunderproductiondesign.APreliminarydesignBDetaileddesignCHullproductiondesignDOutfittingproductiondesign正确答案：CD第3题ThelargertheL/B,theslimmertheboatandthelessresistanceithaswhennavigatingthewater.第4题Atthemiddlecross-sectionoftheship,theverticaldistancefromthedeckedgetothefloorplate.第5题Theoutersurfaceoftheouterplateofasteelshipiscalledthetypesurfaceofthehull.第6题Productiondesignsolvestheproblemof"whatshiptobuild".第7题Preliminarydesignisalsoknownascontractdesign.第8题()referstothehorizontaldistancebetweentheveryfrontandrearendsofthehullsurface,includingthesuperstructure.AOveralllengthBDesignwaterlinelengthCThelengthbetweentheperpendicularlines第9题Whichofthefollowingparametersdescribetheheightofaship?ADeckthicknessBTypedepthCdraftDFreeboard正确答案：BCD第10题Thesizeofthewaterlinesurfacecoefficientindicatesthefatandthindegreeofthewaterlinesurface.第11题Themagnitudeoftheprismaticcoefficientindicatesthedistributionofthehull'sunderwaterdisplacementvolumeinthedirection().AheightBcaptainCShipwidth第12题Whichofthefollowingtypesofplateframeconstruction?ALongitudinalskeletontypeBTransverseskeletontypeCHybridskeletontypeDRingskeletontype正确答案：ABC第13题Thelongitudinalbendingresistanceofthelongitudinalskeletonshipisrelativelystrong.第14题Thetransverseskeletonhullstructureissuitableforsmallshipsandrivervessels.第15题()issuitableforwarships,largeoiltankers,andotherlargeocean-goingcargoships.ASingletransverseskeletonhullstructureBHybridskeletonhullstructureCSinglelongitudinalskeletonhullstructure3.1.2Assignments第1题Whatofthefollowingpreparationsneedstobemadebeforetheconstructionoftheshipbegins.ATechnicalpreparationBProductionpreparationCMaterialandequipmentpreparationDPreparationoffactorygroundsandfacilitiesEPersonnelandmanagementpreparation正确答案：ABCDE第2题Whichofthefollowingconstructiontechnologiesistheleaderoftheothertechnologiesinthepreparationofshipconstructiontechnology.AShipoutfittingtechnologyBMarinepaintingtechnologyCSplitlaneconstructiontechnologyDPrecisioncontroltechnologyforshipconstruction第3题Theonlymaterialsneededforshipconstructionaresteel.第4题Theequipmentrequiredforshipconstructionneedstobepreparedinadvance.3.2.2Assignments第1题Thesteelplatestransportedtotheshipyarddonotneedtobeprocessedinadvanceandcanbeusedforhullconstructionandproduction.第2题Ifthedeformedsteelisuseddirectly,itwillreducethemachiningaccuracyofthehullstructure.第3题Steelpretreatmentmainlyincludeswhichofthefollowingworkcontents.ASteelcorrectionBSteelformingprocessingCProtectionofsteelsurfacesDCleaningofsteelsurfaces正确答案：ACD第4题Themulti-rolllevelingmachineusedforthecorrectionofsteelplateshastwoworkingrollers.第5题Thinsteelplatesaremoredifficulttocorrectthanthickplates.第6题Allprofilesneedtobestraightenedbeforetheycanbeusedinshipconstruction.第7题Whichofthefollowingsurfacecleaningmethodsissuitablefortheformationofasteelpretreatmentline.AChemicalrustremovalmethodBShotblastingandrustremovalmethodCWithrustprimermethodDHigh-pressurewaterrustremovalmethod3.3.2Assignments第1题Theprocessingofhullcomponentsisdividedintotwoparts:()and().AAssemblyandprocessingofcomponentsBComponentedgemachiningCComponentbevelingprocessingDComponentformingandprocessing正确答案：BD第2题Componentweldingbevelmachiningbelongsto().AComponentedgemachiningBComponentformingandprocessing第3题Therearemainlythefollowingmethodsofedgeprocessing.AMathematicalcuttingBMechanicalcuttingmethodCChemicalcuttingmethodDPhysicalcuttingmethod正确答案：BCD第4题Theequipmentusedformechanicalshearingofcurvededgemembersismainly().ABladegantryshearingbedBPressureshearCDiscshearDEdgemillingmachine第5题Intheprocessofedgeprocessingofcomponents,thecommonlyusedchemicalcuttingmethodsaremainlyasfollows.AManualgascuttingBPlasmacuttingCSemi-automaticgascuttingDAutomaticgascutting正确答案：ACD第6题Plasmacuttingisaphysicalcuttingmethod.第7题Thefunctionofthegrooveistoweldtheworkpieceandensuretheintegrityoftheweldingquality.第8题Theformingandprocessingofhullcomponentsaredividedintothefollowingtypesaccordingtotheprocessingobject.AFormingofplatesBColdformingprocessingCHotbendingprocessingDFormingofprofiles正确答案：AD第9题Intheformingandprocessingofhullplatecomponents,unidirectionalcurvatureplatesaregenerallyprocessedbythewater-firebendingplatemethod.3.4.2Assignments第1题Whichofthefollowingbelongstothehullparts.AWeldT-beamsBRibframeCsuperstructureDrudder正确答案：ABD第2题Thefirststepinsteelplatesplicinginshipconstructionis().APlatingtoremoverustBSteelplatepositioningCSteelplatesplicingDSteelplatewelding第3题Whenthesteelplateisspliced,inthecaseofboththesideseamandtheendseam,wegenerallyassemble().AEndseamBEdgeseams第4题Forsteelplateswithalargearea,thelengthofweldsisrelativelylong,soatpresent,onlymanualweldingcanbeusedinshipyardsforsteelplatesplicing.第5题Whenautomaticweldingisadopted,duetothepoorweldingqualityatthearcstartingpointandthearcextinguishingpoint,inordertoeliminatethisdefect,afterthesteelplateisassembledneatly,thearcignitionplateandthearcextinguishingplatecanbesetatbothendsoftheplateseam.第6题T-shapedstraightbeamsmostlyadopttheflipmethod.第7题MostT-shapedbendingbeamsusetheinvertedmethod.第8题IntheprocessofinvertedassemblyofstraightT-beams,acertainamountofanti-deformationcanbepre-placedonthesideofthewebandpanelpositioningwelding,sothattheangleisgreaterthan90°,whichisusedtooffsettheangulardeformationcausedbypositioningwelding.第9题T-shapedstraightbeamscanbeassembledusingtheside-mountedmethod.3.5.2Assignments第1题Segmentsareclassifiedaccordingtoappearancecharacteristics,whichtypescanberoughlydividedinto?APlanarsegmentationBSurfacesegmentationCSemi-stereoscopicsegmentationDStereoscopicsegmentationETotalsegments正确答案：ABCDE第2题Planarsegmentsaresingle-layerflatplateframeswithbonesonstraightplatecolumns.第3题Curvedsegmentsaredouble-layeredcurvedpanelswithbonesoncurvedpanelcolumns.第4题Semi-solidsegmentsarenon-enclosedsegmentscomposedofsingle-layerplateframes.第5题Asolidsegmentisaclosedsegmentcomposedoftwoormorelayersofplateframes,oranon-circularsolidsegmentcomposedofaflatplateframe.第6题Thetotalsectionisaring-shapedthree-dimensionalsegmentinwhichthemainhullisdividedalongthedirectionofthecaptain,anditsdepthandwidthareequaltothedepthandwidthofthedivision第7题Thesegmentedweldingmethodisdividedintothefollowingaccordingtotheassemblyformofthestructure?ASeparationassemblymethodBLongitudinaltrussionmethodCFrameworkLawDPositiveCreationLaw正确答案：ABC第8题Afterthesectionisweldedbythepanel,thelayingstructureisscribedaccordingtotherequirementsoftheworkingdrawing,andthemountingandweldingmethodofthelongitudinalmaterialandthetransversestructureis().ASeparationassemblymethodBLongitudinaltrussionmethodCFrameworkLaw第9题Theseparationassemblymethodhashighassemblyweldingefficiency,andtheassemblyerroriseasytoadjustbeforewelding,butonlygravityweldingandmanualweldingcanbeusedtoweldlongitudinalmaterials.第10题()istoinstallthelongitudinalmaterialandperformcontinuousautomaticfilletweldingafterthescribingofthesectionallayingplate,andthentheinstallationandweldingofthetransverseframe.ASeparationassemblymethodBFrameworkLawCLongitudinaltrussionmethod第11题Itissegmentedplatingweldingandscribingcarriedoutonthesegmentedmanufacturingsite,whiletheframeismanufacturedonaspecialassemblyplatform,andafterthemiddleassemblyofthelongitudinalmaterialandthetransverseframe,theframeassemblyisweldedintoawholeandthenhoistedonthesectionforinstallationandwelding.ALongitudinaltrussionmethodBSeparationassemblymethodCFrameworkLaw第12题Accordingtotheclassificationofthestateofsegmentedassembly,whatarethefollowingsegmentedweldingmethods?APositiveCreationLawBCounter-reactionCSidefabricationDHorizontalmethod正确答案：ABCD第13题Forsomethree-dimensionalandsemi-three-dimensionalsegments,inadditiontocurvedshellplates,therearealsoplanarstructuralpartssuchasplatforms,decksandinnerfloorplates,whicharegenerallyweldedbythe()methodinshipyards.APositiveCreationLawBCounter-reactionCSidefabricationDHorizontalmethod第14题Forsharp-shapedsegmentssuchasbowcolumnsegmentsandrudderstructures,()aregenerallyusedforconstruction.APositiveCreationLawBCounter-reactionCHorizontalmethodDSidefabrication第15题Thecurvedouterplateofthelargesolidsegmentofthebowhasasmallcurvatureandisgenerallyconstructedusing().APositiveCreationLawBCounter-reactionCHorizontalmethodDSidefabrication3.6.2Assignments第1题Atotalsegmentisgenerallycomposedofwhichofthefollowingsegments?ARingsegmentsBPlanarsegmentationCSurfacesegmentationDStereoscopicsegmentation正确答案：BCD第2题Byadoptingthemethodofclosingthetotalsection,manyofthesegmentalclosingworkintheslipwayassemblystagecanbemovedtotheassemblystageofthegeneralsection,whichcanreducetheworkloadoftheslipwayandshortentheslipwaycycle.第3题Thecentralringsegmentisgenerallycomposedofwhichofthefollowingsegments.ABottomsegmentBBroadsidesegmentationCDecksegmentationDBulkheadsegmentation正确答案：ABCD第4题Ifafalsebulkheadisusedduringtheassemblyofthegeneralsection,thefalsebulkheadcannotberemovedafteruse.第5题Theinstallationorderofthecentralringsectionisgenerallythefollowing?ABottomsegment-decksegment-broadsidesegment-decksegmentBBottomsegment-broadsidesegment-decksegment-bulkheadsegmentCBottomsegment-bulkheadsegment-decksegment-broadsidesegmentDBottomsegment-broadsidesegment-decksegment-bulkheadsegment3.7.2Assignments第1题Wherethefinalassemblyoftheshipisdone.AslipwayBTirerackCShipyardDBuildworkshopsinsections正确答案：AC第2题Whichofthefollowingarecommonslipways?AShipyardBTilttheslipwaylongitudinallyCHorizontalslipwayDSemi-dockslipway正确答案：BCD第3题Thelongitudinalinclinationslipwayisconvenientforassemblyandinspection,andthesafetyoflaunchingisrelativelygood.第4题Thehorizontalslipwayoccupiesasmallarea,theinvestmentislarge,theconstructionscaleandlaunchingweightarelarge,andthemaintenancecostisrelativelyhigh.第5题Semi-dockslipwaysdonotrequireclosingdockdoorswhenbuildingships.第6题Theshallowdockisusedforshiprepair,calledashiprepairdock.第7题Theshipyardreducestheliftingheightofthesection,thedegreeofmechanizationisrelativelyhigh,andthelaunchingissafeandreliable,whichissuitablefortheconstructionoflargeships.第8题Beforethefinalassemblyoftheslipway,thepreparationworkontheslipwayincludeswhichofthefollowing.ADrawtheslipwaycenterlineBDrawslipwayhalf-widthlinesCDrawtheslipwayribinspectionlineDDrawtheheightlineontheheightpole正确答案：ABCD第9题Beforethefinalassemblyoftheslipway,thepreparationworkonthehullincludeswhichofthefollowing.ADrawsegmentedslipwayinstallationpositioninglinesBDrawthebisectionofthesegmentCInstallationoftemporarysupportsforslipwayassemblyDInstalltheliftingeye正确答案：ABCD第10题Iftheshipbuiltisasingleship,whichofthefollowingconstructionmethodscanbeemployed.AThetotalsectionconstructionmethodBTowerconstructionmethodCTandemconstructionmethodDIslandconstructionmethod正确答案：ABD第11题Thetowerconstructionmethodisbuiltwiththefirstsectionasthebasesegment,andthenbuiltbackwardfromthere.第12题Duringtheconstructionprocess,thesectionsmustbeconnectedusingembeddedsegments.第13题Thehorizontalconstructionmethodisalsoknownasthelayerconstructionmethod第14题Thehorizontalconstructionmethodissuitablefortheconstructionofshipswithalargenumberofslipwaybulkparts.4.1.2Assignments第1题Whichofthefollowingequipmentbelongstoshipoutfittingequipment.ACabinequipmentBNauticalequipmentCRudderequipmentDAnchordevices正确答案：ABCD第2题Atpresent,thepowerequipmentcommonlyusedincivilshipsisreciprocatingdieselengines.第3题Whichofthefollowingarethecommonlyusedhosttypesforshipstoday.ASteamturbinesBdieselengineCgasturbineDnuclearpower正确答案：ABCD第4题Themainengineofmoderntransportshipsismainlysteamturbines.第5题Whichoftheindicatorsthatdeterminethehandlingperformanceofashiparethefollowing.ASailingspeedBHeadingstabilityCNavigationeconomyDGyration正确答案：BD第6题TherudderequipmentconsistsofwhichofthefollowingArudderBSteeringmechanismCServosDManipulationdeviceETransmissionmechanism正确答案：ABCDE第7题Rudders,accordingtohowtheyareconnectedtothehull,aredividedintothefollowingtypesAOrdinaryrudderBSpecialruddersCSemi-suspensionrudderDSuspensionrudder正确答案：ACD第8题Ruddersplacedbehindrudderpostsordulllogsaredoubleormulti-supported().AOrdinaryrudderBSemi-suspensionrudderCSuspensionrudderDSpecialrudders第9题Therudderplacedbehindthehelmarmbelongsto().AOrdinaryrudderBSuspensionrudderCSemi-suspensionrudderDSpecialrudders第10题Theruddersuspendeddirectlybehindthepropellerbelongsto().AOrdinaryrudderBSemi-suspensionrudderCSpecialruddersDSuspensionrudder第11题Ruddercanbedividedintothefollowingtypesaccordingtothepositionoftherudderaxisinthedirectionoftherudderstring.AUnbalancedrudderBBalancerudderCSemi-balancedrudderDOrdinaryrudder正确答案：ABC第12题()isatypeofrudderinwhichtherudderaxisisclosetotheleadingedgeoftherudder.AUnbalancedrudderBBalancerudderCSemi-balancedrudderDOrdinaryrudder第13题()istherudderatapositionontherudderaxisatapositionofftheleadingedgeoftherudder.AUnbalancedrudderBSemi-balancedrudderCBalancerudderDOrdinaryrudder第14题()isatypeofrudderwiththerudderaxisbehindthehelmarm.AUnbalancedrudderBBalancerudderCOrdinaryrudderDSemi-balancedrudder第15题Shipanchorequipmentisonlyusedwhentheshipismoored.第16题Theanchorequipmentintheshipislocatedatthebowposition.第17题Whichofthefollowingarecommonanchorsinships.ASecuretheclawanchorBTherearerodturningjawanchorsCRodturningjawanchorDSpecialanchors正确答案：ABCD第18题Navalanchorsarerod-swivelclawanchors.第19题Theanchorbodyandcrossbarsofthenavalanchorarecaststeel,whichisofhighstrength.第20题Rodclawanchorsareusuallylonger,sothegripinthesiltisrelativelylarge.第21题Whichofthefollowinganchorsarerodlessclawanchors.ANavalanchorBHallanchorsCSbeckanchorDBohranchor正确答案：BCD4.2.2Assignments第1题Thedevelopmentofoutfittingtechnologyhasgonethroughthefollowingstages.ATraditionaloutfittingtechniquesBPre-outfittingtechnologyCRegionaloutfittingtechnologyDCoordinateoutfittingtechnology正确答案：ABC第2题Traditionaloutfittingtechnologygenerallyinvolveshullconstructionfirst,andoutfittingworkbeginsafterthehulliscompleted.第3题Outfittingworkwithtraditionaloutfittingtechniquesismainlycarriedoutonboardfromthelaunchofthehulltothedeliveryoftheship.第4题Traditionaloutfittingtechnologyhashighworkefficiency,goodassemblyaccuracy,andgoodcoordinationbetweensystems.第5题Intheuseofpre-outfittingtechnology,manyoutfittingoperationsarecarriedoutinsectionsandsectionsbeforetheyareontheslipway.第6题Pre-outfittingtechnologycanimproveoperatingconditions,reducelaborintensity,andimprovetheefficiencyofoutfittingoperations.第7题Pre-outfittinggenerallyincludeswhichofthefollowingbasiccontents.AUnitassemblyBSegmentedpre-outfittingCComponentsarepre-outfittingDThetotalsectionispre-outfitting正确答案：ABD4.3.2Assignments第1题Whichofthefollowingfeaturesisincludedintheshipbuildingmodule.AAestheticsBstandardizationCOptionalityDPre-production正确答案：BCD第2题Standardizationintheshipbuildingmodulefeatureelementmeansthatthemoduleshouldhave()and()features.AStandardsizeBStandardconstructionCStandardweightDStandardprice正确答案：AB第3题Theoptionalityintheshipbuildingmodulefeatureelementmeansthatthemoduleshouldhave()and()characteristics.AExclusivityBOptionalpartsCCombinatoryDStandard正确答案：BD第4题Shipoutfittingmodulesmainlyinclude()modulesand()modules.ASelf-sustainingBSplitCDependentDPrefabricated正确答案：AC第5题Thepre-outfittingunitsintheself-sustainingoutfittingmodulearesuitableforupgradingshiptypeswithsimilarrequirements.第6题Modularshipbuildingisessentiallythesameasthesegmentedconstructionofships.第7题Formostships,outfittingworkcanbedividedintowhichareas.ACabinoutfittingareaBHulloutfittingarmorplateareaCHulloutfittinglivingareaDHulloutfittingworkarea正确答案：ABC第8题Thehulloutfittinglivingquartersincludeengineshedsandchimneys.5.1.2Assignments第1题Whichtypeofhostismostusedinocean-goingvessels?AsteamturbineBdieselengineCgasturbineDnuclearpower第2题Whichofthefollowingpartsisnotincludedinshipdeckmachinery?AAnchordevicesBSteeringequipmentCthrusterDLoadingequipment第3题Whichofthefollowingpartsdoesashippowerunitinclude?APropulsionunitBMarinepipingsystemsCAssistivedevicesDhostEShipdeckmachineryFMarineautomationequipment正确答案：ABCEF第4题Whichofthefollowingarepowerpipingsystems?ACompressedairlinesBVentilationlinesCLubricationlinesDFuellinesECoolinglines正确答案：ACDE第5题Whichofthefollowingdoestheshippropulsionunitinclude?AhostBShipshaftingCHighpressureoilpumpDTransmissionequipmentEthruster正确答案：ABDE第6题Mostshipsbelow30,000tonsusegasturbinesasthemainengine.第7题Marinedieselengineshavehighthermalefficiencyandawidepowerrange,buttheyareslowertostart.第8题Thesteamturbinehashighpower,reliablework,andcanburninferiorfueloil.第9题Agasturbineisthelightestandsmallestpropulsionpowerunitofallshippowerunitsthatproducethesameamountofpower.第10题Whichofthefollowingformsdoesthemarinecombinedpowerunitinclude?ASteam---gascombinedpowerunitBGas---gascombinedpowerunitCDiesel---gascombinedpowerunitDSteam---steamcombinedpowerunit正确答案：ABC第11题Theenormousenergygeneratedbythefissionreactionofatomicnucleiinmarinenuclearpowerunitscandirectlyactonmarinepropellers.第12题Thetaskoftheship'sshaftingistotransferthepowerofthemainenginetothepropeller,andthentheaxialthrustgeneratedbytherotationofthepropellertothemainhull.第13题Marineauxiliarydevicesrefertoequipmentthatprovidesotherrequiredenergyotherthanpropulsiondevicesforshipnavigation,operationandlife.第14题Marinepumpsareonlyresponsibleforpumpingwateronboard.第15题Shippipingsystemscanbedividedintothefollowingaccordingtodifferentuses?AFirepipingsystemBFreshwaterpipingsystemCPowerlinesystemDMarinepipingsystems正确答案：CD5.2.2Assignments第1题Whichofthefollowingprocessesisdonein-house?ATailtubesealBBoringshaftholesCShaftpairingDDeterminethecenterlineoftheshaftingtheoryETailshaftassembly正确答案：ABCE第2题Theshaftingtheorycenterlineisthebenchmarkforthemainengineshaftinginstallation.第3题Whatarethemainmethodsfordeterminingthecenterlineofshaftingtheory.APerpendicularmethodBWirepullingmethodCCalculationmethodDOpticalmethod正确答案：BC第4题Whentheshaftinglengthislessthan15m,shipyardsoftenusethemethodofdrawingsteelwiretodeterminethecenterlineofshaftingtheory.第5题Beforetheshaftingcenterlinecanbedetermined,themainweldedassemblyworkaffectingthetotalstrengthofthehullmustbebasicallycompleted.第6题Whenmeasuringshaftingcenterlines,themeasurementworkisnotaffectedbytheweather.6.1.2Assignments第1题Whichofthefollowingbelongstoshippowerstations.AMainpowerstationBMooringpowerstationCEmergencypowerstationDSpecialpowerstationsEFirepowerstation正确答案：ABCD第2题Anemergencypowerstationisakindofpowerstationthatsuppliespowertotheloadnecessarytoensurethesafetyoftheshipinanemergency.第3题Shippowergridreferstoakindofpowernetworkformedbythetransmissionofelectricenergyfromthemaindistributionboardthroughthecable,throughtheintermediatepowerdistributiondevice,andsenttoeachelectricaluser.第4题Whatistheroleofanavigationsignallightsystem?AShiplightingBShipcommunicationsCVoyageofshipsDSignalindicationofentryandexit正确答案：CD第5题Whichofthefollowingaremainlyincludedinthelinesystemofshippowerdistributionsystem?ADCpowerdistributionsystemBSingle-phaseACpowerdistributionsystemCTwo-phaseACpowerdistributionsystemDThree-phaseACpowerdistributionsystem正确答案：ABD第6题WhatisincludedinaDCpowerdistributionsystem.ATwo-wireinsulationsystemBNegativegroundthree-wiresystemCNegativegroundtwo-wiresystemDAsingle-linesystemwiththehullasthenegativecircuit正确答案：ACD第7题Oilshipsalladoptanegativegroundtwo-wiresystem.第8题Single-linesystemswithhullascircuitsarethesafest.第9题Three-phaseACpowerdistributioninthelinesystemofshippowerdistributionsystem.AThree-wireinsulationsystemBFour-wiresystemwithcenterlinegroundingCAtwo-wiresystemwithacenterlinegroundingandahullasthecenterlineDAfour-wiresystemwithacenterlinegroundingandahullasthecenterline正确答案：ABD6.2.2Assignments第1题Forfrequentlyoperatedelectricalequipment,theheightofthecenterofitsoperatingpositionisgenerally1.5m.Severaldevicesofdifferentsizescanbeinstalledwithauniformbasesurfaceonthebottomsurface.第2题Whentheequipmentisinstalled,afterthescrewsandnutsaretightened,thethreadshouldextendnomorethan2~3screwmomentsfromthenut.第3题Thelinesoftheship'scablesshouldbeasstraightandeasytoaccessaspossible.第4题Theequipmentinstallationmustbeeasytodisassembleandassemble,theheightissuitable,andtheequipmentdoorshouldbeabletorotatefreelyabove180°tofacilitatethemaintenanceandmaintenanceoftheinternalcomponentsoftheequipment.第5题Theoverallrequirementsfortheinstallationofshipelectricalequipmentareinlinewithspecifications,safetyandreliability,reasonablelayoutandeconomicbeauty.第6题Sincetheshipisadriftonthesea,itdoesnotneedtoconsidertheproblemofgrounding.第7题Whatarethespecificationrequirementsfortheinstallationofelectricalequipmentonships?ACompliancewithspecificationsBSafeandsecureCWelllaidoutDEconomicalandbeautiful正确答案：ABCD第8题Thepurposeofgroundingofshipelectricalequipmentistoensurethenormaloperationoftheship'selectricalsystem,ensurethesafetyofoperatorsandequipmentontheship,reducetheelectricalinterferenceoftheequipment,andimprovethestabilityoftheequipmentwork.第9题Whichofthefollowingtypesofshipelectricalequipmentgroundingaremainlyincluded?AProtectiveearthingBWorkinggroundCConstructiongroundingDLightningprotectionandanti-staticgroundingEAnti-interferencegroun