目视II级试卷

1YHT目视Ⅱ级考试试卷VTLevelⅡExamination（Multiplechoice多项选择题）应试人姓名Candidate考试日期Date考试地点Address得分Grading主考人Examiner阅卷日期Date1.Equationamongwavelengthλ，frequencyfandwavevelocityCis：波长（λ）、频率（f）和波速（C）之间的关系为A.λ=f×CB.λ=f÷CC.λ=C÷fD.f=C×λ2.Whichsituationofthefollowingobjectscannotbeensuredoninspectioningeneral？目视检验通常不用于确定下列物体哪些情况？AConditionandshapeofwork-piecesurface工件表面状态、形状BMatchingsurfacealignment配合面的对准CLeakagetrace泄漏痕迹DMicrocosmicimperfectionofmaterial材料的微观缺陷3.Theunitofilluminanceis：发光强度的单位是Alumen流明Bcandela烛光Clux勒克斯Ddecibel分贝4.Whichfactorshouldbeconsideredforchoosingmeasurewhenvisualtesting？目视检测时，选用量具应考虑因素为：AMeasurefunction量具功能BMeasureprecision量具精确度CMeasurementrange量具度量范围Dalloftheabove以上全是5.Thevisualtestisclassifiedastwotypes.Whatarethetwotypes？2目视检测分为哪二种检测技术？ADirectvisualtestandlong-distancevisualtest直接目视检测和远距离目视检测BDirectvisualtestandlenstest直接目视检测和透镜检测COpticalfibertestandlong-distancevisualtest光纤检测和远距离目视检测DDirectvisualtestandindirectvisualtest直接目视检测和间接目视检测6.Whensomeonegoesfromaplacewhereisbrighttoanotherplacewhereisdark，hispupilwill：当人从光线明亮处进入暗处时，瞳孔会Aminify缩小Bmagnify扩大Cbeinvariable不变DA，BandCallmayberight以上均可7.Whichansweristhedistanceofdistinctvisionfrom100mmto∞？Thedistanceofdistinctvisionisadistancebetweeneyesandanobjectinwhichanormalman’seyesarenottensionalandnottiredeasilywhenobservesaobject.；人眼的调节范围从无穷远到100mm，当目的物与眼睛的距离是多少时，正常人的眼睛不处于紧张状态，这时眼睛观察物体不易疲劳，这个距离称为明视距离。A250mmB400mmC150mmＤ500mm8.Whenanobjectanditsimageareonthesamesideandobjectdistanceislessthanfocioflens，youcansee；当像和物在凸透镜的同侧且物距小于透镜的焦距时，人们所看到的是Aamplificatoryvirtualimage放大的虚像Bamplificatoryrealimage放大的实像Ccontractiblevirtualimage缩小的虚像Dcontractiblerealimage缩小的实像9.Whenchopsticksareinsertedintowater，theylookliketwosegments.Whichcharacteristicoflightcanmaketheabovesituationhappen.将筷子插入水中，从水面上看似折成二截，这是光的什么特性引起的？ALinearity直线性BReflectivity反射性3CRefrangibility折射性Dalloftheabove以上皆是10.Opticalwaveguidefibreofanendoscopeusestomakelighttransmitinwaveguidecore.内窥镜的光导纤维利用（），使光线在光导芯体中传输。Areverberation反射Brefraction折射Creverberationandrefraction反射与折射Dnoneoftheabove.以上皆非11.Therelativepositionbetweeneyesandthetestedsurfaceisrequiredthatduringdirectvisualtestingeneral.直接目视检查，一般要求眼睛与被检表面之间的相对位置为AThedistanceislessthan500mmandtheincludedangleislessthan30°.距离不大于500mm;夹角不大于30°BThedistanceislessthan600mmandtheincludedangleislessthan30°.距离不大于600mm;夹角不小于30°CThedistanceislessthan500mmandtheincludedangleislessthan45°.距离不大于500mm;夹角不大于45°DThedistanceislessthan600mmandtheincludedangleislessthan45°.距离不大于600mm;夹角不大于45°12.Whenlightirradiatesanobjectandthenreflectsbacktoprimarymedium，theincidentangleoflightis：当光照射至物体，然后折回原介质时，其光之入射角：Alessthanreflectionangle小于反射角Bequaltoreflectionangle等于反射角Cgreaterthanreflectionangle大于反射角Dunsure无法确认13.Imagerecordingmediumusedinvisualtestincludes：.目视检测图像记录的介质有：Arecordingpaper纸质记录Brecordingphoto照片记录4Crecordingkinescope录像记录Dalloftheabove以上都是14Asavisualexaminer,youshallhaveyoureyescheckedatleast;目视检验员的眼睛核查必须至少；Aevery3months每3个月一次Bevery6months每6个月一次Ceveryyear每年一次Devery3year每3年一次15Whenthefluxcoatingonanelectrodeisentrappedintheweldmetal,itisclassifiedas;当焊条的药皮卷入焊缝金属中时，被分类为；Aporosity气孔Blackofpenetration未焊透Clackoffusion未熔合Dslag夹渣16.Cracksonsolderedjointsarecausedby;在凝固的焊缝接头上的裂缝是由什么引起的？Amechanicalloads机械负载Bthermalexpansion热膨胀Cimproperjointclearances接头不清洁Dalloftheabove以上全对17.Whatcriteriamustaninspectorusetojudgewhetheradiscontinuityisseriousenoughtorejecttheweld?检验员根据什么标准判断不连续严重到拒收焊缝？ANondestructivetests无损检测BThesubjectivejudgmentoftheinspector检验员的主观判断CConditionssetdownintheacceptancestandard,codeorspecificationforthejob工件的验收标准，法规或技术规范规定的条件DBothBandCB和C二者18.Whichofthefollowingitemsshouldbeconsideredinperforminganexaminationpriortowelding?在焊前应检查下列哪些项目？ABasematerialtype母材类型BJointfitup接头装配CWelderqualificationstatus焊工资格DAlltheabove上述所有项目19.Whenperformingaweldinginspectionforfinalvisual,thewelder’squalification;当焊缝进行最终目视检验时，焊工资格：5Aneednotbeverified不需验证Bmustbeverified必须验证Cisokaybecausehecannotgetelectrodeswithoutpropercertification因为没有证书领不到焊条，所以可以通过Dcannotbeverifiedbecausehehasleftthejob因为他已离开工作，所以不能验证20.Visualexaminationforwelds,thebasematerialpriortoweldingcanexaminelaminationoncutedges,inadditiontodothis,otherareasrequiringinspectionare:焊缝目视检验，在焊接前母材的切割边缘可检查分层，除此之外，要求检查的项目还有；Aproperedgepreparation,dimensions,andfinish合适的边缘制备，尺寸，和光洁度Bclearancedimensionsofbackingstrips,backingrings,andconsumableinserts衬条，衬环，和可熔嵌条的间隙尺寸Calignmentandfit-upofworkpieces工件的对准和装配Dverificationofcorrectmaterialsbycheckofrecords材料核对记录来验证正确与否Everificationofcleanlinessrequirementsandconditionoftackwelds验证清洁度要求和搭接焊情况Fverificationofweldingprocedureandperformancequalification验证焊接工艺规程和工艺评定Galloftheabove以上全对6答案1.C2.D3.B4.D5.D6.B7.A8.A9.C10.A11.B12.B13.D14.C15.D16.B17.C18.D19.B20.G