大工春《钢筋混凝土结构》在线作业

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1、大工10春《钢筋混凝土结构》在线作业Work10spring"reinforcedconcretestructure"onlinehomework1Totalscore:100testtime:-testscores:100*radioquestions*multiple-choicequestions*judgmentquestionsRadioexaminationquestions(15questions,60points)Score:601.,thestructureofprestressedsteelbariscalled().A.plainconcretestructure

2、B.prestressedconcretestructureC.concrete-filledsteeltubestructureD.steelreinforcedconcretestructureThecorrectanswer:BFullScore:4points:42.thestructureisdesignedaccordingtothenormalworkingcondition.Whichofthefollowingisnotthemaincheckingitem?.A.componentdeformationB.crackresistanceC.crackwidthD.u

3、ltimatebearingcapacityThecorrectanswer:DFullScore:4points:43.theapplicabilityoftheformulaforcalculatingthenormalsectionbearingcapacityofflexuralmemberswithrectangularmembers(1)thereinforcementratioofthesectionislessthanthelimitofthereinforcementratio,soastopreventthemembers.A.littletendonfailure

4、B.excessivereinforcementfailureC.crackistoowideThedeflectionofD.componentistoolargeThecorrectanswer:BFullScore:4points:44.,therelationbetweentheprobabilityofreliabilityandtheprobabilityoffailureiscorrect.A.thesumoftwois1B.thedifferencebetweentwois1C.theproductofthetwois1D.thequotientofthetwois1T

5、hecorrectanswer:AFullScore:4points:45.whentheheightofthebeamisgreaterthanorequalto300mm,thediameterofthelongitudinalforcesteelbarinthebeamshallnotbelessthan().A.8mmB.10mmC.12mmD.14mmThecorrectanswer:BFullScore:4points:46.structurewithinaspecifiedtime,undertheprescribedconditions,theabilitytocomp

6、letetheintendedfunction,knownasthestructure.A.securityB.durabilityC.reliabilityD.applicabilityThecorrectanswer:CFullScore:4points:47.thefollowingvaluesabouttheminimumthicknessofcast-in-placeone-wayslabsarecorrect.A.60mmB.70mmC.80mmD.90mmThecorrectanswer:AFullScore:4points:48.thefollowingvaluesfo

7、rthestrengthgradeofconcretearecorrect.WhenA.adoptsHRB335gradesteelbar,thestrengthgradeofconcreteshouldnotbelowerthanC25B.componentssubjectedtorepeatedloadsshallnotbelessthanC20oftheconcretestrengthThestrengthgradeofC.prestre