CWI考试1PART+A+练习题及答案

焊接检验技术(练习题按教材10章的顺序排列，美国惯用单位制和公制转换表，答案附于最后)2b.economics经济c.lessconservativedesign较少保守的设计Q1-2WhatAWSdocumentdescribe哪份AWS文件阐述了CWI证书程序规定?AWSQC1中包括的三种焊接检验证书是哪三种?e.Noneoftheabove以上都不是Q1-5Whatisgenerallyconsiderb.anengineeringdegree工程师职称c.anassociates'degree助理职称fessionalattitude职业态度e.holdacertifiedweldercertificate拥有注册的焊工证书b.JaegerJ2atnotlessthan12inJaegerJ2不少于12英寸d.theinspectorcannotwearglasses检验员不能佩戴眼镜缩略语KASH表示：焊接检验员应掌握的基本知识为：a.weldingprocesses焊接方法b.nondestructivetesd.codesandstandards规范和标准用以描述推迟生产计划以允许检验的术语是：a.NDE无损检查b.holdpoint停止点c.preinspection预检测e.arcstrike电弧触发Q1-10Inspectionreportco检验报告的修改应这样进行：a.rewritingtheentirereport重写整份报告b.reportingthecorrectiontotheweldingforeman将修改部分给焊工领班d.ignoringtheoriginalerror忽略原先的错误Q1-11Adefinitionof道德的定义是：a.usingcommonsenseandhonesty常规的诚实观b.livingbytherules按规定办事c.beingfairandimpartial公平并公正d.basingdecisionsonfacts依据事实作出结论4Q1-12Forcommunicationstobeeffective,itshouldforma“continuousloop.”b.false错误b.supervisors监督人员c.weldingengineers焊接工程师d.membersofmanagement管理人员Q1-14NDEpersonnel(otherthanCWIs)aretypicallyceNDE人员(而非CWI)依据哪份文件颁发证书?你要想成为CWI,必须有高中的学历证书。a.true正确b.false错误d.code,visiontest,practical规范，视力检查，实际操作e.noneoftheabove以上都不是a.true正确b.false错误5a.true正确a.FillerMetalSpecifications填b.StandardWeldingTermsandDefinid.RequirementsforCWICertificatione.noneoftheabove以上都不是API标准1104包括横穿全国的桥梁的制作。b.false错误Q1-21Someoftheapprovedcodes/standardsfortheopD1.5和AWSD15.1.a.true正确b.false错误Q1-22Priortostartingb.whatinspectionsshouldbeconducted应该进行什么c.wheninspectionsshouldbeconducted应该何时进行检测d.whererecordsaremaintained记录保存于何处第2章安全操作和焊接检验a.radiation辐射b.fallingobjects坠落物c.electricalshock触电d.eyehazards眼睛伤害tectiveeqmpment保护工具e.managementsupport管理层的支持c.ASMECodeASME规范d.WeldingHandbook,Volume2焊接手册第二卷Q2-5Theabbrevia缩略语MSDS表示：c.MaterialSafetyDataSheed.MaterialStrengthandDataSheet材料强度和数据单7e.noneoftheabove以上都不是a.TotalLinearvolume总线性量b.ThresholdLimitValue限值c.TackLengthValue定位长度值d.ThresholdLimitingValve极限数据b.false错误a.true正确b.false错误d.areaswhereafirehazardmayoccurduringawelding,cutting,orprehea.flyingparticles飞溅物b.radiation辐射dalloftheabove以上皆是a.weldinghelmetswithfilterplates装有滤光镜片的焊接头盔b.clearsafetygoggles透明护目镜8a.65%cotton,35%polyester65%棉，35%涤纶b.Wool羊毛'Lock,Tag,andTry'procedureshouldb.false错误b.thetypeoffillermetal填充物的种类d.thepositionoftheweldingmachine焊接机器的位置e.thepositionofthewelder'shead焊工头部所处位置b.false错误a.true正确e.alloftheabove以上皆是Q2-18Properusageandhanda.notweldingoncylinders不在容器上进行焊接不将容器作接地用，或不将其接入电路.c.securingthemproperly合理地保护e.alloftheabove以上皆是Q2-19Acetylenebecomeb.10psia.notharmful无害b.primarycurrents主要电流c.harmful有害a.allthewayonanacetylenecylinder通向乙炔气瓶的所有通道b.oneturnonanoxygencylinder开启一个氧气缸c.oneturnorlessonanacetylenecylinder第3章金属连接和切割的方法以下什么是SMAW焊条药皮的作用?AWS标准里规定SMAW的焊条标识中最后一个数字之前的数字表示什么意SMAW焊条标识E7024中各符号和数字表示的意思不正确的是以下哪个?b.Thewelddeposithasaminimumtensilest熔敷金属的最小抗拉强度为70000PSI.e.noneoftheaboveQ3-4Ofthefollowingwhichisnotanessentialpartofa以下哪部分不是典型的SMAW特点?a.constantcurrentpowere.worklead工件接电3-5Whichofthefollowingweldingproblemsistheresdthatdeflectstheweldingb.shortcircuiting短路d.insufficientweldingcurrent焊接电流不足Q3-6Whichofthefollowingisnotconsideredatypeofmetaltr以下什么不是GMAW的熔滴过渡类型?a.shortcircuiting短路b.spray喷射c.globularQ3-7WhichofthefollowingtypesofmetaltransferinGMAWprovidesthelowestamountofheattotheworkpiece,andtherefore以下哪种GMAW的熔滴过渡，会使工件热量最低，并导致未熔合?下列哪些可以用做GMAW的保护气体?d.argon氩气Q3-9Whattypeofweldingprocessispicturedba.SMAW药皮b.GMAW熔化极气体保护焊c.FCAWFCAW的焊丝标号系统中，E71T-5中的第二个数字(1)表示的是什么意思?a.strength强度b.weldingposition焊接位置d.usability适用性e.noneoftheaboveQ3-12Whichofthefollowing以下哪些不总是FCAW焊接系统的基本要素?a.constantvoltagepowersupply恒压b.tubularelectrode管状焊丝c.shielding气体保护e.noneoftheabove以上都不是a.granularfluxb.slag熔渣b.1%thoriatedtungsten含1%的針的钨c.2%thoriatedtungsten含2%針的钨Q3-16Whenweldingaluminumwi当使用GTAW焊铝时，哪种类型的电流使用最广泛?a.DCEP直流，电极接正极b.DCEN直流，电极接负极a.bothareanarcweldingprocesc.bothuseagranularflux,whichbecomea.SMAWb.ESWQ3-19Solidificationcrackingduetoimproperwidth-to-depthratiooftheseriousproblemprimarilywith用以下哪种焊接方法会因为熔敷焊道不合适的宽深比产生结晶裂纹?a.SMAWb.OFCe.noneoftheabove以上都不是Q3-20Whichoneofthefollowingprocessesistypicallyusedinthefiatpositionunle除非使用特殊装置，否则，以下哪种焊接方法一般用于平焊位置?b.SAWe.GTAW对于GTAW和PAW,以下什么不是它们共有的?a.nonconsumabletungstenelectrode非熔化钨极b.constrictingorifice压缩喷嘴beveledgepreparatiPAW的什么技术能在不制备坡口情况下达到完全熔透?a.stringerbeadsQ3-23Whatweldingprocesspralongthejoint?b.ESWQ3-24Whichofthefollowingi以下什么不是ESW的优点?a.highdepositionratec.capableofjoiningthicksections能焊接厚板d.notendencyforangulardistortion无角变形趋势e.noneoftheabove以上都不是Q3-25Whichweldingprocessisconsideredtobeachemicalweldingprocess?b.ESWe.noneoftheabove以上都不是Q3-26whicharcweldingprocessprovidesaveryefficientmeb.SWa.nofillermetalisused不用填充金属e.noneoftheabove以上都不是a.cleanjointsurfc.alargesurfaceareaforthejointareaa.easeofjoiningthicksections容易连接厚截面b.abilitytoioindissimilarmetalsc.abilitytojointhinsecQ3-30Ofthefollowingmetalsa.high-carbonsteel高碳钢b.low-carbonsteelpane丙烷Q3-32Whichofthefollowingcuttingprocessescancutanymetal?a.OFC氧气切割b.dross割渣c.kerf割痕e.noneoftheabove以上都不是a.DCEN直流反接c.DCEP直流正接isnotinfluencedbythepresenceofmagneticfields?e.noneoftheabove以上a和bb.TT型接e.edge端接Q4-2ThetermforthetypeofjointformedwhenthetwopiecestobejplanesandtheiredgesoQ4-3Thetermforthatportionofasinglebevelbuttjointwherethetwopiecestobejoinedb.jointroot接头根部b.rootQ4-5Thetermforthetypeofweldproducedbyfillmemberattachingittothememberbeneathis:Q4-6Thetermforthetypb.single-flare-Vgroove单面喇叭-V型坡口e.noneoftheaboveappliedtoeitheraT,comer,orlapjointis:Q4-8Thetermforthetypeofweldusedtobcorrosionprotection,orprovidealayerofabrasiQ4-9ThetermforthetypeofweldappliedtotV-grooveweldiscompletedonthenearsideofajointa.melt-throughweldb.backingweldc.backweldd.rootweld根部e.noneoftheabove以上都不是whichtheweldingwasdon焊逢顶部b.weldreinforcement焊接面盖面焊a.rootb.weldedgec.weldreinforcementQ4-12Thetermfortheheightoftheweldfaceabovec.facea.effectivethroat有b.concaveweld下凹形焊缝c.convexweldQ4-14Whenlookingatthecrosssectionofacompletedgroovebetweenthefusionfaceandtheweldia.depthoffusion熔b.depthofpenetration熔透深度c.rootpenetration根部熔透d.jointpenetratione.effectivethroat有效焊缝厚度a.theoreticalandeffectiveb.effectiveandactuale.noneoftheabovedfromthejointroottowheretheweldpenetrationstopsis:对于部分熔透的单面V形坡口焊缝，测量从接头根部到焊缝熔透停止处的尺b.effectivethroat有效焊缝厚度c.rootpenetration根部熔透深度d.depthoffusion熔合深度b.diameterofweldatpointofcontactc.depthofpenetratione.noneoftheabove熔合深度熔透深度a.taile.weldsymbol焊缝符号e.noneoftheabovb.weldingsymbol焊接符号d.arrow箭头e.noneoftheabove以上都不是Q4-21WhichofthesymbolsbelowQ4-23Thesymbolbelowdepictswhattyb.flarebevelgroov焊缝尺寸根部间隙b.effectivethroat有效焊缝厚度c.depthofbevel单面斜面深度Q4-26Ifappliedtoalinthickweldjoint,theweldingsymbolbelofweld?如果应用于1英寸板厚的焊接接头，以下焊接符号表示的是什么焊缝类型?a.fullpenetrationdoublebevel-grooveweld完全熔透双面单边V形坡口焊逢b.fullpenetrationdoubleV-grooveweld完全熔透双面V型坡口焊缝c.partialpenetrationdoublebevel-grooveweld部分熔透双面单边V形坡口焊逢d.partialpenetrationdoubleV-grooveweld部分熔透双面V型坡口焊缝e.noneoftheaboveQ4-27Atriangular-shapedweldsymb三角形的焊接符号表示的是什么焊缝类型?d.V-grooveV型坡口以下焊接符号表示的是什么焊缝类型?e.noneofthe-above错列断续角焊逢链状断续角焊逢部分角焊逢断续角焊逢以上都不是Q4-29Thefirstdimensionappearingtotheimmediaterightofthew紧靠焊接符号右边的第一个尺寸通常表示：a.weldreinforcement焊缝余高b.rootopening根部间隙c.pitchdistance间距d.weldlength焊缝长度e.noneoftheabove以上都不是在塞焊缝和槽焊缝中，放在焊缝符号内的尺寸表示什么?a.depthoffilling填充深度b.slotweldwidth槽焊缝宽度c.plugwelddiameter塞焊缝直径d.angleofcountersink钻孔角度e.noneoftheabove以上都不是要求的点焊缝尺寸参数可以用什么表示?a.adimensiontotherightofthesymbol焊接符号右边的尺寸c.avaluefortherequiredshearstrengthperspot要求的每一点剪切变强度值点焊缝符号右边的数值表示：a.spotweldsize焊点尺寸b.spotweldlength焊点长度c.numberofspotsrequired所需要的点焊数目d.pitchdistancebetweenadjacentspots相邻焊点之间的间距e.noneoftheabove以上都不是一个焊接符号中需要哪些要素?d.alloftheabove箭头b和cQ4-35Theweldingsymbolbelowshowstheuseofwhattypeofcompletedweld?a.singlebevel-grooveweldwithbackingweld有打底焊缝的单面单边V形坡b.singlebevel-grooveweldwithbac.singleV-grooveweldwithbackingwelde.noneoftheabove有封底焊缝的单边V形坡口焊缝有打底焊缝的单面V形坡口焊缝有封底焊缝的单面V形坡口焊缝Q4-36Thesymbolbelowshowswhattypeofjointa.squaregrooveI型坡口d.scarf嵌接Q4-37Thepartoftheweldingsymbolwhichcanbeusedtoconveyanyinformationthatcannotbeshownotherwiseis焊接符号哪一个部位可以用来表示一些用其他方式无法表示的附加信息d.thetail尾部a.thelengthofweld焊缝长度b.thetypeofwelding焊接形式c.thenumberofweldsrequireda.depthofbevel斜面深度b.thelengthofweld焊缝长度c.theweldqualitystandard焊缝质量标准d.theweldproceduretouse使用的焊接工艺Considertheweldingsymbolsbelowforquestions考虑以下焊接符号并回答问题Q4-41~Q4-44369GQ4-41Whichofthesymbolsaboverepresentsanintermittentfillet以上哪个焊接符号表示断续角焊缝?b.8d.4e.5Q4-42Whichofthesymbolsaboverepresentsagrooveweldwithmelt-through?以上哪个焊接符号表示带熔穿的坡口焊缝?b.3e.noneoftheabove以上都不是Q4-43Whichofthesymbolsabove以上哪个焊接符号表示不完全填满的塞焊缝?b.3d.7e.94-44Whichofthesymbolsaboverepresentsagrooveweldwithbackingweldorbkb.2d.7第5章d.textbooks,.教科书Q5-2Ofthefollowing,wha.codes规范b.specifications技术说明Q5-3ThejobdocumentsthatbestdescribethesizeandconfigurationofaweldQ5-4Thetypeofdocumen-5ThetypeofdocumentthatdrQ5-6Somethingsetupandestablisha.specification技术说明b.standard标准Q5-7Ofthefollowingtypesofdocuments,whichhavegeneralacceptanceintheweldingc.AWSA5.1-A5.31Q5-11Whichofthefollowingmethodsforcontrollingmaterialb.alphanumericcoding数字编码d.barcoding条形码e.segregationbyalloy合金ASME规范中的哪一卷包括焊工技能评定?b.SectionXIb.showthetotalamounta.asavariationbetweenlimits在限定值之内的c.noneoftheabove以上都不是a.general概要c.specifications技术说明d.alloftheabove以上都是d.noneoftheabove以上都不是testingpersonnelhaveadequate对于确保所有焊接和检测人员有足够的证明，焊接检验员没有责任进行检查的。美国焊接学会开发了多少焊接规范?Q5-19Wheninspectingunb.false错填充材料在ASME规范的哪一卷中?e.noneoftheaboveQ5-22Basemetalsused制作中所用母材可以符合以下哪一项?ASTM标准对母材没有要求a.fillermetals填充金属b.rulesforbridgeipelines横穿国家的管线d.pressurevesselfabrication压力容器e.noneoftheabove以上都不是b.containchecksandbalances包括检查和平衡d.bebasedon"firstin-firstout"基于“第一时间进一第一时间出”a.UnitedNondestructiveSociety美国无损检测协会b.UnitedNationalStandards美国国家标准c.UnifiedNationalSystem统一的国家标准Q5-26Whoisnormallyresponsibleforthequalificationofweldingwelders?通常由谁负责焊接工艺和焊工的评定?a.welder焊工b.architect建筑师d.engineer工程师e.Codebody规范Q5-27Whichofthefollowingprocesses根据AWSD1.1,以下种焊接工艺不被认为可以免除评定?b.submergedarc埋弧焊rprocedureandwelderqualificationtesting?以下哪类试样，是用以进行API而不是ASME的工艺和焊工评定试验?e.tensile拉伸horizontal,sotheweldermustweldab.2Gb.2GQ5-31Whatisthepipepositiontestforwelderswhoaretryingtb.2GQ5-32IfawelderqualifiestoweldwithanE6010eb.E6012Q5-33Withrelationtoprocedureandwelderqualification,whichofthefollowingcanbeanimportanttaskfortheweldia.watchingtheweldingqualificationtest观测焊接评定试验b.identifyingsamples鉴别试样Q5-34Formostcodes,ifaweldercontinuestouseaparticulongdoesthewelder'squalificatioa.indefinitely不确定第6章Q6-1Thepropertyofmetalsthatdescribestheirresista.strength强度b.toughness韧性d.ductility延展性Q6-2Thepropertyofmetalsthata.strength强度b.toughness韧性d.ductility延展性Q6-3Generally,asstrengthincreasesa.increases增加b.staysthesame没有变化c.decreases减少a.strength强度b.toughness韧性d.ductility延展性pressive压力c.torsional扭力d.impact冲击力e.fatigue疲劳强度b.tensiletesting拉伸试验c.hardnesstesting硬度试验a.conductivityandstrengb.strengthandductility强度和延展性c.strengthandhardness强度和硬度d.ductilityandtoughness延展性和韧性a.strength强度c.hardness硬度d.toughness韧性e.noneoftheabove以上都不是a.tensilestrength抗拉强度b.UTS极限抗拉强度c.hardness硬度d.fatiguestrength疲劳强度tonthepropertiesandperformanceofcarbonsteel?d.chromium铬c.cracking裂纹a.ultimatetensilestrength极限抗b.percentelongation延伸率d.impactstrength冲击强度e.yieldstrength屈服强度Q6-14Ametal'sductilitycanb.percentreductionofarea断面收缩率一个抗拉强度的试样，截面为0.25平方英寸，在受到15250lbs的载荷时断裂，那么,此试样的抗拉强度是多少?(抗拉强度=载荷/面积)b.61000psie.noneoftheabove以上都不是Q6-16Thepointatwhichametal'Sbehaviorchangesfromelastictoplastic(on金属材料从弹性变形到塑性变形(永久变形的开始)的那一点称为：a.yieldstrength屈服强度b.ultimatetensilestrength极限抗拉强度d.Young'smodulus杨氏模量试样的原始长度是2in,最终长度是2.5in,那么该试验的延伸率是多少?b.25%e.noneoftheabove以上都不是Q6-18Thefamilyofhardnesa.Brinell布氏硬度b.Vickers维氏硬度c.Rockwell洛氏硬度d.Knoop努普显微压痕硬度试验a.Rockwell洛氏硬度b.Vickers维氏硬度c.Knoop努氏硬度Q6-20Whattypeoftestusesaweightedpendulumwhichstrikesanotchedtest以下哪类测试方法是利用摆锤来冲击试样的缺口?a.Brinelltes布氏硬度试验b.fatiguetest疲劳试验c.tensiletest拉伸试验d.microhardnesstest显微硬度试验e.Charpyimpacttest夏比冲击试验a.fatigue疲劳试验b.hardness硬度试验c.soundness完好性试验d.tension拉伸试验a.tensilestrength抗拉强度c.hardness硬度d.toughness韧性a.hardness硬度试验c.filletbreak角焊缝断裂Q6-24Thetypeoftestingusedtoevaluatethetypeb.hardness硬度试验c.toughness韧性d.metallographic金相试验Q6-25Whichofthefollowingtestscanbeusedtojudgethesoundnessofaweld?Q6-26Whichofthefollowingtestswillgenerallybeusedtodeterminea.guided-bendtest导向弯曲试验c.Chamyimpacttest夏比冲击试验e.alloftheabove以上都是Q6-27Withrespecttotherollingdirectionofsteelplatemanufacture,whichstatementc.Thestrengthishighestinthe'X'direction.X方向强度最高d.Thestrengthishighestinthe'Y'direction.Ye.Thestrengthislowestinthe'Y'directionY方向强度最低b.ductilityoftheweldmetal焊缝金属的延展性c.impactstrengthoftheweld焊缝冲击强度e.noneoftheabove以上都不是ofmetals.Q6-30Forplaincarbonsteels,theirapproximatemultiplyingtheirB算?b.300a.ductility延展性b.toughness韧性d.impactstrength冲击强度e.noneoftheabove以上都不是additionwouldbe:b.carbon碳Q6-34Hydrogen,oxygen,andnitrogencanallcac.spacedasetdistanceapartd.usedforcalculatinb.tensilestrength抗拉强度c.hardness硬度e.impactstrength冲击强度Q6-39InCharpytesting,thetesttempera.notimportant不重要的b.veryimportant很重要c.notconsidered不需要进行考虑的d.neverreported没有提及过在夏比冲击试验中，试验数据是以什么方式报告：b.lateralexpansion横向膨胀d.alloftheabove以上都是第7章Q7-1A50.01bcanofweldingelectrodesweighshowmanykg?Q7-2AweldjointismeasurQ7-4Whichofthefollowingaretheproperbaseunitb.kilogram千克当气体的流速为30cfh时，换算成升/分钟(1/m第8章a.energyisaddedtothestrc.theatomsvibratemorevigorously原子更加激烈的运动d.themetalexpands母材膨胀a.solid固体b.liquid液体Q8-3Aproblemoccurringinwetheweldingoperationb.incompletefusion未熔合c.distortion变形d.slaginclusions夹杂e.noneoftheabove以上都不是Q8-4Whichofthefollowingisnotamethodusedtoeliminateorrea.vibratorystressrelief震动消除压力c.thermalstressrelief加热消除应力d.peeninge.annealing退火atomsoftheparentmetalisreferredtoas:b.substitutionalalloying置换合金b.carbide碳化物Q8-7Veryslowcoolingofsteelmayresultintheproductionofasomicrostructurewhichhasalamellarappearancewhenviewedunder钢很慢冷却时会产生软的易延展的微观结构，通过高倍放大镜下可以看到其a.martensite马氏体c.bainite贝氏体d.ferrite铁素体Q8-8Whenrapidcoolmaybeappliedtoimprovetheductilityofthesteel?a.quenching淬火b.tempering回火c.annealing退火e.noneoftheabove以上都不是ofthechangeslistedbelowwouldresultinareductionoftheheatinput?当被认定焊接工艺会造成较大热输入的时候，下列哪个方法可以减小热输入?b.decreasevoltage减少焊接电压e.alloftheabove以上都是Q8-10Theuseofpreheatwillta.resultinawiderheat-affectedzone可以造成更宽的热影响区ducelowerheat-affectedzonehardness减小热影响区的硬度d.reducethetendencytoproducemartensiteintheheat—affectedzone减小热e.alloftheabove以上都是c.increasedbasemetalthickness增加母材厚度Q8-12Whatheattreatmenttemperatureforsometima.normalizing正火b.quenching淬火c.anneallng退火d.tempering回火e.stressrelief应力释放Q8-13Whatheattreatmenta.normalizing正火b.quenching淬火c.annealing退火Q8-14Steelheatedabovemetallurgicalstructure.Thistemperatureis:将钢加热而高于较低的转变温度(A1)的时候可以改变母材的冶金结构。这a.1333°F1333华氏度b.933°F933华氏度d.3600°C3600摄氏度Q8-15Atomsinthesoli原子在固体(凝固)状态b.havenodistinctstructure没e.noneoftheabove以上都不是d请计算相应的热输入：焊接速度为5英寸/分钟，电压为25伏，电流为100安培(请参照练习题后面所附的计算公式)a.peening锤击d.solidification凝固e.sensitizing光敏处理Q8-18Theprocesswherecarbonisaa.decarburization脱碳b.packcarburizing固体渗碳c.precipitationhardening淀积硬化d.quenching淬火d.alloftheabove以上都是Q8-20Whichofthefollb.stressrelieving应力释放d.annealing退火Q8-21Whichofthefollowingcanbeaccomplishedusingeitherthermalormecha以下哪一种能够或者用加热，或者机械的技术予以完成?a.annealing退火b.tempering回火c.quenching淬火d.stressrelieving应力释放以下哪一种加工可以导致碳钢成最软的状态?a.annealing退火b.quenclalng淬火e.normalizing正火carbon,0.84%manganese,0.09%nickel,0.25%chromium,0.052%copper,and一个钢的化学成分如下：碳0.16%,锰0.84%,镍0.09%,铬0.25%,铜0.052%,钼0.40%,请计算其碳当量?b.0.34按定义，不锈钢的最少含铬量为多少?b.12%c.15%Q8-25Sensitization,orcarbideprecipibywhichofthefollowingmethods?通过以下哪种方法，可以减少奥氏体不锈钢的敏化或碳化物沉淀?a.solutionannealing,waterquenching固溶退火，水中淬火d.alloftheabove以上全都是e.usinghighcarbonstainlesssteels应用高碳不锈钢a.truea.sensitization7b.nitrogenremoval脱氮e.noneoftheabove以上都不是Q8-30Weldingmetallurgyiscc.alwaysacceptable总是合格的d.rejectableifitexceedscodelimits如果超过了规范的限定，则不合格特定的焊缝不连续是否处于临界，可在下述基础上予以判定：b.Whetheritislinearornonld.alloftheabovee.noneoftheabove是否是表面的，或表面下是否是线性，或非线性是否端部呈尖锐状态以上都是以上都不是哪种缺陷一般被认为是最严重的?a.porosity气孔b.incompletefusion未熔合c.slaginclusion夹渣d.crack裂纹e.arcstrike电弧引燃以下的那种不连续不可能由目检发现?a.toecrack