西南交《桥渡设计》在线作业一（southwest cross bridge crossing design online homework one）

《西南交《桥渡设计》在线作业一（southwest cross bridge crossing design online homework one）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、西南交《桥渡设计》在线作业一（Southwestcrossbridgecrossingdesignonlinehomeworkone）Southwestto"bridgecrossingdesign"onlinehomeworkTotalscore:100testtime:-RadioButtonListTodeterminetheproblemAmultiple-choicequestionRadioButtonList,(atotalof8questions,atotalof32points.)Beamelevation(1.)A.isthedesignlevelB.ishighe

2、rthanthedesignlevelandbridgenavigationclearanceC.ishigherthanthedesignlevelD.designofwaterlevelsafetyvalueScore:4points2.when1.3timesthedownstreamwaterdepthisgreaterthanorequaltothecriticalwaterdepth,waterflowunderthebridge,called().A.criticalflowB.submergeddischargeC.nonfreeflowD.freeflowScore:

3、4points3.thetheoreticalcurveis().AccordingtothehydrologicalA.formulatedthetheoryofcurveAmathematicalcurveselectedB.curveC.floodhydrographD.rainfalllineScore:4points4.referstothefloodA.riverbeachsectionTheB.RiverintheheartBeachC.RiverBeachD.hasnobottomsedimentintheriverbedScore:4points5.when1.3ti

4、mesthedownstreamwaterdepthislessthanorequaltothecriticaldepth,underthebridgeforthecriticalflowstate,thedownstreamnaturalwaterdepthdoesnotaffectthebridgewaterflow,thisformiscalled().A.criticalflowB.submergeddischargeC.nonfreeflowD.freeflowScore:4points6.returnperiodof100yearflood,thefollowingdesc

5、riptioniscorrect().A.thefloodoncewas100yearsB.overthefloodhappened100yearsonceThepossibilityofsuchabigfloodthisyearC.was1%D.overthefloodmayappearmanytimesinthepast100years,perhapsonedidnotappearScore:4points7.flood(refersto)A.is3timesmorethantheaverageflowoffloodB.is2timesmorethantheaverageflowo

6、ffloodC.is4timesmorethantheaverageflowoffloodThereisnocleardefinitionofD.Score:4points8.referstothegeneralscourdepthA.bedtogeneralerosionlineB.bedsurfacetothelocalscourlineDesignofC.surfacetogeneralerosionlineDesignofD.surfacetonaturalerosionlineScore:4pointsSouthwestto"bridgecrossingdesign"onli

7、nehomeworkTotalscore:100testtime:-RadioButtonListTodeterminetheproblemAmultiple-choicequestionTodeterminetheproblem(atotalof13questions,atotalof52points.)1.riversectionisspacious,deepandnarrowbythechangeofresistancetotheflow