輪機(jī)英語(yǔ)關(guān)聯(lián)題(二、三管輪)閱讀理解核心題庫(kù)

1、1關(guān)聯(lián)題（132題）題）Passage1Becausetherearemanyfueloiltanksonashipusuallyaseniengineerwillbeattheengineroomtooperatethefillingvalves.Therewillbeanothergroupofpeopleondecktotakesoundingsofthetanksastheoilfillsup.Theideaistofillup

2、thetanksinasystematicwaysothatoilwillnotoverflowcausepollutiontotheenvironment.Inpracticethiscansometimesbequitetrickyallthepersonnelinvolvedinbunkeringneedtobeextravigilant.Inwintertimetheoilbecomesthickthelevelshownont

3、hesoundingtapescanbemistakenlyread.Whenbunkeringisdoneatthesametimeascargoloadingunloadingtheshiptendstoheavefromonesidetoanother.Thiswillcauseerrinreadingoftheoillevels.Miscalculationoftanklevelsespeciallywhenusingtheul

4、lagemethodmayleadtowrongreadings.Valvesattheengineroomcouldbewronglyoperatedduetowronginfmationbeingrelayedfromthedeck.Sometimesairbubblestrappedinthesoundingpipescanindicateadifferentoillevelfromtheactual.Thesuppliermay

5、bepumpingtoofast.Thelistgoeson……1.Aseniengineerisanengineer______.A.whoisolderthanothersB.withahighrankC.ingetheenginedepartmentD.whoseseaserviceislongerthanothers2.Thewd“tricky”inthesecondparagraphmeans“_______”.A.decep

6、tiveB.alertC.difficultD.clever3.The“wronginfmation”inthelastparagraphrefersto_______.A.wrongvaluesofoilthicknessB.wrongfiguresofcargoloadeddisgedC.wrongtankstobesoundedD.wrongreadingsoftanklevels4.Thelastsentence“thelist

7、goeson…”meansthat_______.A.thereareotheritemsonthesafetychecklist.B.AcalibrationlistshouldbeusedfullagereadingsC.thereareotherdifficultiesclaimingadditionalwatchfulnessD.Thesuppliermaybepumpingsofastthattheshipislistingc

8、ontinuouslyBCDDPassage2Circuitbreakersmustbecapableofmakinganbreakingundernmalconditionsalsoabnmalconditionssuchasshtcircuit.Asthecircuitbreakermustbeabletowithstclosingontoafaultconditionswithoutsustainingdamageitisofhe

9、avyconstruction.Fittedwithanovercurrentreleaseoverloadswithtimelagsacircuitbreakercanbeusedasfollows:tocontroltheoutputofageneratasadirectonlinestartercontroloutgoingfeedercircuits.Onmodernswitchboards“drawout”circuitbre

10、akersmaybefitted.Intheopenpositionthewholecircuitbreakercanbewoundclearofthebusbarsthusfullinspectionmaintenancecanbeachievedwithoutthenecessityofdeenergizingthebusbars.The“plugin”contactsjoiningthecircuitbreakertothebus

11、barsarenotcapableoftakingbefeanyattemptismadetowithdrawit.Amechanicalinterlockisfittedarrangedtotripthecircuitbreakerbefethewindinghlecanbeed.31.WhatdeviceisusedtoparalleltwoalternatsnowadaysA.Apointer.B.TwowindingsC.Asy

12、nchroscopeD.Twosynchronizinglamps2.Whentwoalternatsaresaidtobe“inphase”________.A.theircurrentoutputsarechangingB.theirvoltagesareachangingatthesamerateC.theyareconnectedonetoeachsideoftheparallelingswitchD.theyhavethesa

13、memaximumvoltage3.Inpracticetheparallelingswitchisclosedasthesynchroscopepointerreachesthe11o’clockpositionwhileitismoving________.A.intheFASTsectionB.intheSLOWsectionC.towardstheFASTdirectionD.towardstheSLOWdirection4.T

14、hecrectmomentfsynchronizingiswhen_________.A.threelampsareequallybrightB.threelampsdarkeninrotationC.thekeylampisbrighttheothertwolampsaredarkD.thekeylampisdarktheothertwolampsareequallybrightCBCDPassage4Olderloopscaveng

15、edenginesmayhaveasingleinjectmountedcentrallyinthecylinderhead.Becausetheexhaustvalveisinthecenterofthecylinderheadonmodernuniflowscavengedenginesthefuelvalves(23)arearrangedaroundtheperipheryofthehead.Thepressureatwhich

16、theinjectoperatescanbeadjustedbyadjustingtheloadingonthespring.Thepressureatwhichtheinjectsoperatevarydependingontheenginebutcanbeashighas540bar.Someinjectshaveinternalcoolingpassagesinthemextendingintothenozzlethroughwh

17、ichcoolingwateriscirculated.Thisistopreventoverheatingburningofthenozzletip.Injectsonmodernenginesdonothaveinternalcoolingpassages.Theyarecooledbyacombinationoftheintensivebecoolinginthecylinderheadbeingclosetothevalvepo

18、cketsbythefuelwhichisrecirculatedthroughtheinjectwhenthefollowerisonthebaseofthecamwhentheengineisstopped.Aswellascoolingtheinjectrecirculatingthefuelwhentheengineisstoppedkeepsthefuelatthecrectviscosityfinjectionbypreve

19、ntingitfromcoolingdown.Fuelinjectsmustbekeptingoodconditiontomaintainoptimumefficiencytopreventconditionsarisingwhichcouldleadtodamagewithinthecylinder.Injectsshouldbechangedinlinewithmanufacturers’recommendationsoverhau

20、ledtested.Springscanweakenwithrepeatedoperationleadingtotheinjectopeningatalowerpressurethandesigned.Theneedlevalveseatcanwearwhichtogetherwithwnnozzleholeswillleadtoincrectatomizationdribbling.1.Modernuniflowscavengeden

21、gineshave_______.A.asingleinjectmountedinthecenterofthecylinderheadB.severalinjectsmountedaroundtheexternalboundaryofthecylinderheadC.asingleinjectmountedattheexternalboundaryofcylinderheadD.severalinjectsmountedinthecen