在接觸網(wǎng)作業(yè)車運(yùn)行中，發(fā)動(dòng)機(jī)應(yīng)做那些檢查?
(1)運(yùn)行中除檢查發(fā)動(dòng)機(jī)機(jī)油壓力表的顯示外，還應(yīng)隨時(shí)注意油位、水溫表的顯示。
(2)運(yùn)行中應(yīng)隨時(shí)監(jiān)聽發(fā)動(dòng)機(jī)的聲音，如發(fā)動(dòng)機(jī)有異響時(shí)應(yīng)立即停機(jī)檢查。若多車牽引運(yùn)行時(shí)，應(yīng)及時(shí)通知附掛作業(yè)車牽引，維持進(jìn)站后再作處理。
(3)運(yùn)行中應(yīng)隨時(shí)檢查發(fā)動(dòng)機(jī)排氣狀態(tài)，煙色不正常時(shí)應(yīng)減小油門。
暫無解析
CignaInsuranceCompanyoffersemployeestheoptionofplacingtake-outmealorderswiththecompanychef.
1.AEuropeanspacecrafttookofftodaytospearheadthesearchforanother"Earth"amongthestars.
2.TheCorotspacetelescopeblastedoffaboardaRussianSoyuzrocketfromtheBaikonurcosmodromeinKazakhstanshortlyafter2.20pm.
3.Corot,shortforconvectionrotationandplanetarytransits,isthefirstinstrumentcapableoffindingsmallrockyplanetsbeyondthesolarsystem.Anysuchplanetsituatedintherightorbitstandsagoodchanceofhavingliquidwateronitssurface,andquitepossiblylife,althoughaleadingscientistinvolvedintheprojectsaiditwasunlikelytofind"anylittlegreenmen".
4.DevelopedbytheFrenchspaceagency,CNES,andpartneredbytheEuropeanSpaceAgency(ESA),Austria,Belgium,Germany,BrazilandSpain,Corotwillmonitoraround120,000starswithits27cmtelescopefromapolarorbit514milesabovetheEarth.Overtwoandahalfyears,itwillfocusonfivetosixdifferentareasofthesky,measuringthebrightnessofabout10,000starsevery512seconds.
5."Atthepresentmomentwearehopingtofindoutmoreaboutthenatureofplanetsaroundstarswhicharepotentialhabitats.Wearelookingathabitableplanets,notinhabitedplanets.Wearenotgoingtofindanylittlegreenmen,"ProfessorIanRoxburgh,anESAscientistwhohasbeeninvolvedwithCorotsinceitsinception,toldtheBBCRadio4Todayprogramme.
6.ProfRoxburghsaiditwashopedCorotwouldfind"rockyplanetsthatcoulddevelopanatmosphereand,iftheyaretherightdistancefromtheirparentstar,theycouldhavewater".
7.Tosearchforplanets,thetelescopewilllookforthedimmingofstarlightcausedwhenanobjectpassesinfrontofastar,knownasa"transit".Althoughitwilltakemoresophisticatedspacetelescopesplannedinthenext10yearstoconfirmthepresenceofanEarth-likeplanetwithoxygenandliquidwater,Corotwillletscientistsknowwheretopointtheirlenses.
8.MeasurementsofminutechangesinbrightnesswillenablescientiststodetectgiantJupiter-likegasplanetsaswellassmallrockyones.Itistherockyplanets-thatcouldbenobiggerthanabouttwicethesizeoftheEarth-whichwillcausethemostexcitement.Scientistsexpecttofindbetween10and40ofthesesmallerplanets.
9.Corotwillalsoprobeintostellarinteriorsbystudyingtheacousticwavesthatrippleacrossthesurfaceofstars,atechniquecalled"asteroseismology".
10.Thenatureoftheripplesallowsastronomerstocalculateastar’sprecisemass,ageandchemicalcomposition.
11."Aplanetpassinginfrontofastarcanbedetectedbythefallinlightfromthatstar.Smalloscillationsofthestaralsoproducechangesinthelightemitted,whichrevealwhatthestarismadeofandhowtheyarestructuredinternally.Thisdatawillprovideamajorboosttoourunderstandingofhowstarsformandevolve,"ProfRoxburghsaid.
12.Sincethediscoveryin1995ofthefirst"exoplanet"-aplanetorbitingastarotherthantheSun-morethan200othershavebeenfoundbyground-basedobservatories.
13.Untilnowtheusualmethodoffindingexoplanetshasbeentodetectthe"wobble"theirgravityimpartsonparentstars.ButonlygiantgaseousplanetsbiggerthanJupitercanbefoundthisway,andtheyareunlikelytoharbourlife.
14.Inthe2010s,ESAplanstolaunchDarwin,afleetoffourorfiveinterlinkedspacetelescopesthatwillnotonlyspotsmallrockyplanets,butanalysetheiratmospheresforsignsofbiologicalactivity.
15.Ataroundthesametime,theUSspaceagency,Nasa,willlaunchTerrestrialPlanetFinder,anotherspacetelescopedesignedtolocateEarth-likeplanets.
ChoosetheappropriateletterfromA-Dforquestion1.
1.Corotisaninstrumentwhich
(A)canhelptosearchforcertainplanets
(B)isusedtofindplanetsintheorbit
(C)canlocateplanetswithhumanbeings
(D)canspotanyplanetswithwater.
Dothefollowingstatementsagreewiththeinformationgiveninthereadingpassage?Forquestions2-5write
TRUEifthestatementagreeswiththeinformation
FALSEifthestatementcontraictstheinformation
NOTGIVENifthereisnoinformationonthisinthepassage
2.Scientistsaretryingtofindoutabouttheplanetsthatcanbeinhabited.
3.BBCRadio4recentlyfocusesonthebroadcastingofCorot.
4.Passingobjectsmightcauseafallinlight.
5.CorotcantellwhetherthereisanotherEarth-likeplanet.
Basedonyourreadingofthepassage,completethesentencesbelowwithwordstakenfromthepassage.UseNOMORETHANTHREEWORDSforeachanswer.
Withmeasurements,scientistswillbeabletosearchforsomegaseousandrockyplanets.Theywillbeextremelyexcitediftheycandiscoversomesmall6.__________,theexpectednumberofwhichcouldbeupto7.__________.
Corotwillenablescientiststostudythe8.__________ofstars.Inthisway,astar’smass,ageandchemicalcompositioncanbecalculated.
AccordingtoProfRoxburgh,changesinlightcanbecausedbypassingplanetsorstar9.__________.Therelatedstatisticscangainusabetter10.__________ofthestarformationandevolvement.
Observatorieshavefoundmanyexoplanets,whichare11.__________otherstarsthantheSun.Thecommonwayusedinfindingexoplanetscanonlydetecthugegasplanets,whichdonot12.___________.
WiththelaunchingofDarwin,astronomerswillbeabletoanalysewhetherthoserockyplanetshave13.__________forlife.
兼職要求學(xué)生遵守紀(jì)律并相應(yīng)地分配時(shí)間。
Advertisingdiscouragespeoplefrombeingdifferentindividualsbymakingusallwanttodothesameandlookthesame.Doyouagreeordisagree?
不懂得金錢價(jià)值的孩子最后在賺錢方面會(huì)有困難。
