第1題Whentheproportionprovidedinthenationalstandardcannotmeettherequirements,itcanbefreelydeterminedaccordingtotheneeds.()AexactnessBwrong第2題Inthemechanicaldrawing,thelinetypeofthecenterlineis()ADrawafinelineBThickdotdrawinglineCfinelineDFinedoubledotdrawingline第3題Thefollowingcorrectdescriptionoftheproportionofthepatternis()A1:2isthereducedratioB1:2istheratiooftheamplificationCThescalewhendrawingdrawingcanbeanarbitraryvalueDThescaleofcomputersoftwarecanbeanyvalue第4題Thenationalstandard"MechanicalDrawingDrawing"(GB/T4457.4--2002)stipulatesthe()linescommonlyusedinmechanicaldrawings.A5B7C9D15第5題Inthemechanicaldrawing,thevisiblecontourlineis()AheavylineBfinelineCwavelineDfinedottedline第6題Theradiusofthearcwiththesameradiusonthesameplaneandthesamecenterangleofthecirclecanbemarkedonlyonce,anditdoesnotneedtomarkthenumberofarcs.()AexactnessBwrong第7題Inthemechanicaldrawing,theinvisibleprofiletypeis()AheavylineBfinelineCwavelineDfinedottedline第8題Whenmarkingdimensions,thesizelinecanbereplacedbycontourline,centerline,axis,etc.()AexactnessBwrong第9題Markthediameterwhenthecenterangleisgreaterthan180degrees.()AexactnessBwrong第10題Thelinetypefordrawingdimensionallinesanddimensionalboundariesis()AheavylineBfinelineCwavelineDfinedottedline

第1題Whendrawingthemechanicalpartsdrawings,generallyuse()ACenter-basedprojectionmethodBParallel-basedprojectionmethodCOrthographyDInclinedprojectionmethod第2題Thefrontprojectionreflectsthebodyinthethree-sideprojectiondiagram().AUpanddown,leftandright,beforeandbackofthethreedirectionsBLeftandright,frontandrearorientationrelationshipCUpanddown,leftandrightorientationrelationshipDUpanddown,frontandbackorientationrelationship第3題Whenthestraightline,planeandprojectionsurfaceontheobjectaretilted,theprojectionofthestraightlineisastraightlinewithashortenedlength,andtheprojectionoftheplaneisaflatshapewithareducedarea.Thisfeatureisknownas().AsimilarityBAccumulationCGeneralityDcollimation第4題ThelineABonlytheWsurfaceprojectionreflectsthesolidlength,andthelineis().AhorizonBfrontallineCSideflatlineDLateralverticalline第5題Drawthethirdprojectionofthefollowinglines,andjudgetherelativepositionofthelinetotheprojectionplane().AhorizonBfrontallineCLateralverticallineDThegeneralpositionisstraight第6題Thetypeoftheplaneshowninthefigureis().AhorizontalplaneBPositiveplaneCSideplaneDGeneralpositionplane第7題IfpointAisontheWprojectionsurface,then(

).AThexcoordinateoftheApointis0BTheycoordinateoftheApointis0CThez-coordinateoftheApointis0DAx,y,z,thecoordinatesarenot0第8題TheVandHsurfaceprojectionofthestraightlineABallreflectthesolidlength,andthestraightlineis().AhorizonBTheverticallineCSideflatlineDLateralverticalline第9題LineABonlytheWsurfaceprojectionreflectsthesolidlength,andthelineis().AhorizonBfrontallineCSideflatlineDLateralverticalline第10題Thetypeoftheplaneshowninthefigureis().ALeadverticalsurfaceBPositiveplaneCSideplaneDGeneralpositionplane【章節(jié)測(cè)驗(yàn)】基本立體識(shí)讀與繪制【ChapterTest】Basic3DShapeRecognitionandDrawing第1題Whentheplanecutcone,whenthesectionplanepassestheconethroughthecone,theintersectionlineis().AisoscelestriangleBRoundorellipticCpara-curveDhyperbola第2題TheconeshowninthefigureiscutbytheverticalsurfaceP,andtheshapeofthecutlineis().AdeltaBOvalandstraightlineCTheparabolaandstraightlineDBicurvesandstraightlines第3題Whencuttingthecolumn,whenthesectionalplaneisparalleltotheaxisofthecylinder,theintersectionlineis().AcircleBrectangleCovalDIt'spossible第4題TheconeshowninthefigureiscutbytheverticalsurfaceP,andtheshapeoftheintersectionlineis().AdeltaBBicurvesandstraightlinesCOvalandstraightlineDTheparabolaandstraightline第5題Thesix-prismconeshowninthefigureiscutoffbytheverticalsurfaceP,andtheshapeofthecutlineis().AdeltaBpentagonChexagonDheptagon第6題Whentheplaneintersectstheball,theprojectionoftheinterceptlinecanbe().AcircleBstraightlineCovalDpara-curve正確答案：ABC第7題TheconeshowninthefigureiscutbytheverticalsurfaceP,andtheshapeoftheintersectionlineis().AdeltaBOvalandstraightlineCTheparabolaandstraightlineDBicurvesandstraightlines第8題Theplaneintersectstheball,andregardlessoftherelativepositionoftheplaneandtheball,theintersectionlineisalways().AcircleBovalChyperbolaDpara-curve第9題Thecylindershowninthefigureiscutbytwoplanes,andtheincisionspaceshapeis().AThecombinationofellipsesandrectanglesBCombinationofellipsesandellipsesCCombinationoftheellipseandthehyperbolaDThecombinationofcirclesandrectangles第10題Theshapeoftheintersectionlinewhenthesectionalplaneslopestheaxisofthecylinderis().ArectangleBcircleCdeltaDoval

【章節(jié)測(cè)驗(yàn)】工程形體軸測(cè)圖的繪制【ChapterTest】DrawingofEngineeringFormIsometricDrawing第1題Intheobliqueparaxialsurveygraph,thegraph()ontheaxialexpansioncoefficientof1isparalleltothetwoaxes.AlargenBdiminutionCuniformity第2題Drawthepositiveisometricdiagram,firstdrawtherectangularcoordinatesystemon()intheprojectiondiagram.AleftviewBbodyCaxonometricaldrawingDthreeviews第3題Inthepositiveisometricmap,theaxialexpansioncoefficientis().A0.82B1C1.22D1.5第4題Theaxialmeasurementprojectionmethodrecommendedbythenationalstandardis().APositiveaxisprojectionandobliqueaxisprojectionBPositiveequaltestandpositivesecondarytestCPositivetwotestandobliquesecondtestDPositiveandequaltestandobliquesecondtest第5題TheAnglebetweenthetwoadjacentaxismeasurementaxesiscalled().AincludedangleBdihedralCinteraxialangleDangleofroll第6題Intheobliqueparaxialmap,whenthetwoaxialexpansioncoefficientis1,theaxialexpansioncoefficientoftheotheraxisis().A0.5B0.6C0.82D1.22第7題Theprojectionoftheaxialdeformationcoefficientontheprojectionsurfaceoftheaxialmeasurement,called().APositiveaxismeasurementprojectionBSlantaxismeasurementprojectionCPositiveequitestprojectionDcabinetprojection第8題Drawthepositiveandequalaxismapoftheball,suchasusingthesimplifiedexpansioncoefficient,diametermagnification()times.A0.82B1C1.22D1.5第9題Drawaregularequaxialsurveyoftheslottedcylinder,firstdraw()theellipseoftheupperandlowerendsurfaceandtheellipseofthebottomplaneofthegroove.AtroughBthreeviewsCverticalviewDcircularcolumn【章節(jié)測(cè)驗(yàn)】組合體的繪制與識(shí)讀【ChapterTest】DrawingandRecognitionofCompositeBodies第1題Dimensionsmarkedonthedrawing,ifthesizenumberisinbrackets,itis()AThedimensionisafixedsizeBThisdimensionisthepositioningdimensionCThissizeisthereferencesizeformachiningandfabricationDThisdimensionistheexcesssize第2題Whatarethefollowingrelationshipsbetweentheadjacentsurfacesofthebody.()AparallelandlevelBNotflatCtangencyDintersect正確答案：ABCD第3題Theholeinthecenterofthecircleonthedimensionreferencebase()AdiameterBTheshapesizeClocationdimensionDOverallsize第4題Thegenerationmethodofthecombinationis().AcompositionBslicingCOverlayandcutDtangency第5題Assemblyisinthreedirections:length,widthandheight()ATwobenchmarksBThereareatleast2benchmarksavailableCThreebenchmarksDThereareatleast3benchmarksavailable第6題Thedimensionofthearcisgenerallymarkedin()AOnthemainviewBOntheviewCOntheleftviewDProjectedasontheviewofthecirculararc第7題Whenthesurfaceofthetwoforms(),thejunctionisseparatedbywires.AtangencyBcoplaneCsmoothconnectionDNotonthesameside第8題Inthesameplane,thesamestructureandsizeofthesamefourroundcorners,thecorrectdimensionis()AR10B4R10C4-R10D4×R10第9題Fourholeswiththesamestructureandsizeinthesameplanearecorrectly()AΦ10B4Φ10C4-Φ10D4×Φ10第10題Whenaplaneandasurfacearecombinedwithstereotangent,atthetangentpoint().ANotangentlineBThereisacrosslineCThereisnoboundaryDThereisadividingline

【章節(jié)測(cè)驗(yàn)】機(jī)械圖樣基本表示法【ChapterTest】BasicRepresentationMethodsofMechanicalDrawings第1題Selectthecorrectsectiondrawing()ABCD第2題Whentheremovedsectionmapisconfiguredontheextensionlineofthesectionposition,andthefigureissymmetrical,thesectionsymbolrepresentingthesectionpositionisdrawnwiththe()lineADrawafinelineBFinedoubledotdrawinglineCfinelineDheavyline第3題Judgewhetherthefigurebelowiscorrect.()AexactnessBwrong第4題Thefull,halfandlocalsectionsuseasinglesectionplane.()AexactnessBwrong第5題Thenumberandproportionofthelocalenlargedmaparemarkedintheenlargedmap()AsuperjacentBlowerpartCBothaboveandbelowareavailableDNoneofthethreeanswersarecorrect第6題Thecorrectdescriptionofthelocalviewis()AMustmarkBDon'tmarkCCanbemarkedornotmarkedDMarkwhennecessary第7題Whatiscorrectabouttheobliqueviewbelowis()ATheprojectionsurfaceisthebasicprojectionsurfaceBTheprojectiondirectionisthebasicprojectiondirectionCTheprojectionsurfaceistheauxiliaryprojectionsurfaceDAllthreeareright第8題Whatiscorrectaboutthefollowingdescriptiontotheviewis()AYoucandrawalocaltotheviewBTheprojectionsurfaceisthebasicprojectionsurfaceCThedirectedviewmustbethefullviewDTheprojectiondirectionisthebasicprojectiondirection第9題Thecorrectnotationforobliqueviewsis()AMustmarkBDon'tmarkCCanbemarkedornotmarkedDMarkwhennecessary

【章節(jié)測(cè)驗(yàn)】常見(jiàn)機(jī)件的規(guī)定畫(huà)法【ChapterTest】StandardDrawingMethodsforCommonMechanicalParts第1題Thefollowingspringsarestandardpartsare().AAcylindricalspiralcompressionspringBAcylindricalspiralstretchingspringCAcylindricalspiraltorsionspringDleafspring第2題Connectingthetwoboardstogethercanbeconnectedusing().AstudBboltCnutboltDInnerhexagonalheadscrew第3題Thecharacteristiccodeoftheordinarythreadisindicatedby().AMBGCRpDNPT第4題Ifthesizeoftheplainplainkeyiswidthb=8,heighth=7,andlengthL=25,theplainkeyshouldbemarkedas()accordingtothecurrentannotation.AKey8725(GB/T1096)BKey825(GB/T1096)CTheGB/T1096bondispresentat8725DTheGB/T1096bond,825第5題Intheviewofthenormalflatkeyconnection,intheaxialsectionview,press()todraw.ADon'tcutBcutawayviewCWithorwithoutsectionDNoneoftheaboveanswersarecorrect第6題Thenominaldiameteroftheboltisd=10,andthelengthisL=40,sothefollowingmarkiscorrectin().ABolt:GB/T5782M1040BBoltM1040CBoltM1040GB/T5782DBoltGB/T5782M4010第7題Thescaledrawingmethodofboltconnectionisbasedon()asthemainparameter,andthestructuresizeoftheotherpartsaredrawninacertainproportion.AMediumdiameterofthethreadontheboltBNominaldiameterofthethreadontheboltCThethreadontheboltDBoltlength第8題6Thetypecodeofthe208bearingis().A6B2C0D8第9題Thethrustbearingmainlybearsthe()load.AradialBaxialCRadialandaxialDslant第10題Whenitisnecessarytoexpresstheloadcharacteristicsandstructuralcharacteristicsofthebearing,the()drawingmethodcanbeused.ARegulationsonpaintingBFeaturepaintingmethodCGeneralpaintingmethodDSimplifythedrawingmethod第11題Apairofstraightcylindricalgearsareengagedwith()ontheviewreflectingthecircle.AfinelineBheavylineCfinedottedlineDDrawafineline第12題Theunitofthemodulusis()AmillimetreBriceCinchDNounit第13題Thenumberofteethoftheinvolutestraightcylindricalgeariscertain,andthelargerthemodulusis()AThesmallerthecircleofthetoothtopBThesmallerthefractionalcircleCThelargerthetoothangleDThelargerthegearofthegear

【章節(jié)測(cè)驗(yàn)】零件圖的繪制與識(shí)讀【ChapterTest】Drawingandreadingofpartdrawings第1題Thefunctionofthepartdrawingisthebasisformanufacturingandtestingtheparts.()AexactnessBwrong第2題Themainviewoftheforkframepartsisgenerallyselectedby().AProcessingpositionBoperatingpositionCLocationwheretheworkingpositionandshapefeaturesaremostpronouncedDsettingposition第3題Intheprocessofmappingcomponents,itisgenerallydrawnfirst().APartdiagramsketchBpartdrawingCAssemblysketchDassemblydrawing第4題Themainviewoftheshaftpartsshallplacetheaxis().AhorizontalBuprightCbias第5題Intheexpressionofthestructuralshapeoftheparts,theplacementstatusoftheshaft,sleeve,wheelanddiskpartsshouldconformtothe()positionoftheparts.AprocessBwork第6題Intheexpressionofthestructureandshapeoftheparts,theplacementstateoftheboxandforkframepartsshouldconformtothe()positionoftheparts.AprocessBwork第7題Whenthecarthreadandgrinding,thecaroftenleavestheshaftshoulderofthesurfacetobeprocessed.()AexactnessBwrong第8題Themodeslopeisthecommonprocessstructurein().AMechanicalprocessingpartsBColdextractionCsectionbarDfoundrygoods第9題Accordingtothenationalstandards,thevisibletransitionlinesaredrawnwith().AfinelineBDraw