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页数:22页
时间:2020-03-30
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1、iBT-TPO之家ContentsTPO软件免费版下载..............................................................................................2LakeWater..............................................................................................................3QuestionsforPassage1...............................
2、...........................................................5Passage2:BreathingDuringSleep..........................................................................9QuestionsforPassage2........................................................................................11Passage3.Movinginto
3、Pueblos............................................................................15QuestionsforPassage3........................................................................................171iBT-TPO之家注:本文所有资料来源于网络。TPO软件免费版下载如需要TPO单机软件版本(非PPS,无需联网,听力图、文、音同步)可以到http://dl.dbank.com/c080pabu
4、a0免费下载试用版,另外TPO18软件免费使用下载地址:http://dl.dbank.com/c0q9yvdj3i2iBT-TPO之家LakeWater<1>◆1>Wheredoesthewaterinalakecomefrom,andhowdoeswaterleaveit?Waterentersalakefrominflowingrivers,fromunderwaterseepsandsprings,fromoverlandflowoffthesurroundingland,andfromrainfallingdirectlyonthelakesurface.Water
5、leavesalakeviaoutflowingrivers,bysoakingintothebedofthelake,andbyevaporation.[1]Somuch[/1]isobvious.<2>◆2><3>◆3><4>◆4>Thequestionsbecomemorecomplicatedwhenactualvolumesofwaterareconsidered:howmuchwaterentersandleavesbyeachroute?Discoveringtheinputsandoutputsofriversisamatterofmeasuringt
6、hedischargesofeveryinflowingandoutflowingstreamandriver.Thenexchangeswiththeatmospherearecalculatedbyfindingthedifferencebetweenthe[2]gains[/2]fromrain,asmeasured(ratherroughly)byramgauges,andthelossesbyevaporationmeasuredwithmodelsthatcorrectfortheothersourcesofwaterloss.Forthemajorityoflake
7、scertainlythosesurroundedbyforests,inputfromoverlandflowistoosmalltohaveanoticeableeffect.Changesinlakelevelnotexplainedbyriverflowsplusexchangeswiththeatmospheremustbeduetothenetdifferencebetweenwhatseepsintothelakefromthegroundwaterandwhatl
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