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1、传输原理试卷（Transmissionprincipletestpaper）08grade"materialprocessingmetallurgytransmissionprinciple"examinationvolume(Bvolume)answerandscoringstandardMarkingoftestpapers1.Refertothescoringstandardofproblem-solvingstepsgiveninthisscoringstandard.2,theproblem-solvingmethodiscorrect,thecalculationresu
2、ltsarewrong,asappropriate,buckle1~2points.3,theproblemsolvingideasarebasicallycorrect,buttheanalysisisnotcomprehensive,notentirelycorrect,accordingtotheproblemsolvingstepsscorepointsasappropriate.4,theerrorofthecalculationresultsinfrontaffectthecalculationresults,aslongasthesubsequentcalculatio
3、nformulaandmethodiscorrect,noduplicationofpoints.5,donotaskstudentstosolvetheproblemstepsandtheanswerisexactlythesame,aslongasyoucanshowthattheyknowthecorrectsolutionandtheresultsarecorrect,youcanscore.6,problem-solvingmethods,calculationresultsarecorrect,buttheintermediatestepsinsolvingproblem
4、sareincomplete,asappropriate,deduct0~1points.7,nophysicalunitofquantityoruniterrordeducted1points.First,multiple-choicequestions(2pointspersubject,totaling10points)1,thefluidcontinuummodelimpliesB.ThegapbetweenmoleculesofA.fluidisverysmall.Thephysicalparameterdescribingfluidmotioniscontinuousfu
5、nctionbyB.C.fluidisincompressible,andthephysicalpropertiesofD.fluidareconstant2.TheflowofAiseasytooccurwhentheviscousfluidflowsatlowvelocityinatubewithverysmallinnerdiameter.C.steadyflowD.unsteadyflowinA.laminarB.turbulentflow3.Siphonwaterbetweentwoopenwatertanks.Themaximumpressureatthetopofthe
6、siphonisB,andtheatmosphericpressureisstrong.A.greaterthanB.,lessthanC.equaltoD.isgreaterthanorequalto4,accordingtotheheatconductionmechanism,inthethreestatesofwatergas,liquidandsolid,thethermalconductivityofAisthesmallest.A.gasB.liquidC.solidD.gasandliquid5.Theemissivityofanobjectdependsonthesu
7、rfacecharacteristicsoftheobject(materialtype,surfaceconditionandtemperature),andtheexternalconditionsA.A.independentB.relatedC.haslittletodowithD.,sometimesrelated,sometimesirrelevant,dependingonthespecificcircumstances;Two,fillin
