高级管道工理论知识试卷（senior plumbing theoretical knowledge test）

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1、高级管道工理论知识试卷（Seniorplumbingtheoreticalknowledgetest）Seniorplumbingtheoreticalknowledgetest(H-2)objectivetestpartoftheanswer.ChoicequestionHydraulicpipebenderisgenerallyusedforbendingdiameterofnotmorethanmm(A).A.44.5B.45.5C.46.5D.47.FiveThebendingradiusofhotbendingbendshouldnotbelessthantheouterd

2、iameterofthetimes(A)A.3.5B.4C.4.5D.FiveTheuseofelectricpipebendingmachine,whenthebendingislargerthantheouterdiameterofpipes(C)mmmustbeplacedinthetubebendingmandrel.A.80B.70C.60D.FiftyThegeneralprovisionsofpipebending,tubewallthinningrateshallnotexceed(C)A.5%B.8%C.15%D.20%Whenthetemperaturechang

3、esofthesteeltube(T)lessthan(B),cannotbeconsideredcompensation.A.300CB.320CC.340CD.360CThepretensionwaveformexpansiondevice,thetensiondeviationnotmorethanmm(A).A.5B.10C.15D.TwentyThewaveformexpansiondeviceliningoneendofthesleeveandtheotherendcanbewavewallwelding(C)A.fixedB.FixedCwelding.Freemobi

4、leD.FixedthreadInthesquareliftingtelescopicdevice,tensiondeviationshouldbelessthanmm(B).A.+5B.+10C.+15C.+20Therearedifferentflowandadapttoeconomicflowdiameter,thediameteroftheflow(A)A.diameterB.EconomicflowC.NominaldiameterD.nominalflowInthenetworkinordertopreventwaterhammerdamagecaused,formaxi

5、mumflowrate(C)A.0.5-0.7m/SB.1-1.6m/SC.2.5-3m/SD.3-3.6m/SForgas,hydrogen,lowpressureairpipe,thegeneralpressuregauge(B).A.springtubeB.DiaphragmtypeC.AcetylenetypeD.OxygentypeTherotorflowmeterissuitableforthepressureisnotmorethan(B)pipeline.A.0.098MpaB1.96MpaC.5.88MpaD.6.3MpaTubepressuregaugeshoul

6、dbesetatambienttemperatureisintheformofU(C)withinthescopeoftheplace.A.10-500CB.15-600CC.10-600CD.20-600CBourdontubepressuregaugepipelinepressurefluctuationsinthemeasurement,indicatingmetershouldbedialformaximumscale(C)A.2/3B.3/4C.1/2D.1/3Twoadjacentfixedbracketbetweenthepipeshouldbeinastraightl

7、ine,eachdeviationshallnotbegreaterthan10m(A)mm.A.5B.3C.7D.NineThepipeconnectorshallnotbeplacedonthehanger,andtosupportthedistancenotlessthanmm(C),soasnottoaffecttheweldingoperationandmaintenance.A.90B.95C.100D.Onehundredandfive17i