【单选题】Ethnology, usuAlly ConsiDErED A BrAnCh oF CulturAl Anthropology, is oFtEn DEFinED As thE sCiEntiFiCAlly stuDy oF thE origin AnD FunCtioning
oF humAns AnD thEir CulturE.
【单选题】gEothErmAlEnErgy
gEothErmAl EnErgy is nAturAl hEAt From thE intErior oF thEEArth thAt is ConvErtED to hEAt BuilDings AnD gEnErAtE ElECtriCity. thE iDEA oF hArnEssingEArth’s intErnAl hEAt is not nEw.As EArly As 1904, gEothErmAl powEr wAs usED in itAly. toDAy,EArth’s nAturAl intErnAl hEAt is BEing usED to gEnErAtE ElECtriCity in 21 CountriEs, inCluDing russiA, jApAn, nEw zEAlAnD, iCElAnD, mExiCo,EthiopiA, guAtEmAlA,E1 sAlvADor, thE philippinEs, AnD thE unitED stAtEs. totAl worlDwiDE proDuCtion is ApproAChing 9,000 mw (EquivAlEnt to ninE lArgE moDErn CoAl-Burning or nuClEAr powEr plAnts)--DouBlE thE Amount in 1980. somE 40 million pEoplE toDAy rECEivE thEir ElECtriCity From gEothErmAl EnErgy At A Cost CompEtitivE with thAt oF othEr EnErgy sourCEs. inE1 sAlvADor, gEothErmAl EnErgy is supplying 30% oF thE totAl ElECtriC EnErgy usED、howEvEr, At thE gloBAl lEvEl, gEothErmAl EnErgy suppliEs lEss thAn 0.15% oF thE totAl EnErgy supply.
gEothErmAl EnErgy mAy BE ConsiDErED A nonrEnEwABlE EnErgy sourCE whEn rAtEs oF ExtrACtion ArE grEAtEr thAn rAtEs oF nAturAl rEplEnishmEnt. howEvEr, gEothErrnAl EnErgy hAs its origin in thE nAturAl hEAt proDuCtion withinEArth, AnD only A smAll FrACtion oF thE vAst totAl rEsourCE BAsE is BEing utilizED toDAy. Although most gEothErmAl EnErgy proDuCtion involvEs thE tApping oF high hEAt sourCEs, pEoplE ArE Also using thE low-tEmpErAturE gEothErmAl EnErgy oF grounDwAtEr in somE AppliCAtions.
gEothErmAl systEms
![]()
thE AvErAgE hEAt Flow From thE intErior oF thEEArth is vEry low, ABout 0.06 w/m2.
![]()
this Amount is triviAl CompArED with thE 177 w/m2 From solAr hEAt At thE surFACE in thE unitED stAtEs. howEvEr, in somE ArEAs, hEAt Flow is suFFiCiEntly high to BE usEFul For proDuCing EnErgy. For thE most pArt, ArEAs oF high hEAt Flow ArE AssoCiAtED with plAtE tECtoniC BounDAriEs. oCEAniC riDgE systEms (DivErgEnt plAtE BounDAriEs) AnD ArEAs whErE mountAins ArE BEing upliFtED AnD volCAniC islAnD ArCs ArE Forming (ConvErgEnt plAtE BounDAriEs ArE ArEAs whErE this nAturAl hEAt Flow is AnomAlously high.
![]()
on thE BAsis oF gEologiCAl CritEriA, sEvErAl typEs oF hot gEothErmAl systEms (with tEmpErAturEs grEAtEr thAn ABout 80℃, or 176℉) hAvE BEEn DEFinED, AnD thE rEsourCE BAsE is lArgEr thAn thAt oF Fossil FuEls AnD nuClEAr EnErgy ComBinED、A、Common systEm For EnErgy DEvElopmEnt is hyDrothErmAl ConvECtion, ChArACtErizED By thE CirCulAtion oF stEAm AnD/or hot wAtEr thAt trAnsFErs hEAt From DEpths to thE surFACE.
![]()
gEothErmAlEnErgy AnD thEEnvironmEnt
thE EnvironmEntAl impACt oF gEothErmAl EnErgy mAy not BE As ExtEnsivE As thAt oF othEr sourCEs oF EnErgy, But it CAn BE ConsiDErABlE. whEn gEothErmAl EnErgy is DEvElopED At A pArtiCulAr sitE, EnvironmEntAl proBlEms inCluDE on-sitE noisE, Emissions oF gAs, AnD DisturBAnCE oF thE lAnD At Drilling sitEs, DisposAl sitEs, roADs AnD pipElinEs, AnD powEr plAnts.DEvElopmEnt oF gEothErmAl EnErgy DoEs not rEquirE lArgE-sCAlE trAnsportAtion oF rAw mAtEriAls or rEFining oF ChEmiCAls, As DEvElopmEnt oF Fossil FuEls DoEs. FurthErmorE, gEothErmAl EnErgy DoEs not proDuCE thE AtmosphEriC pollutAnts AssoCiAtED with Burning Fossil FuEls or thE rADioACtivE wAstE AssoCiAtED with nuClEAr EnErgy. howEvEr, gEothErmAl DEvElopmEnt oFtEn DoEs proDuCE ConsiDErABlE thErmAl pollution From hot wAstE-wAtEr, whiCh mAy BE sAlinE or highly CorrosivE, proDuCing DisposAl AnD trEAtmEnt proBlEms.
gEothErmAl powEr is not vEry populAr in somE loCAtions Among somE pEoplE. For instAnCE, gEothErmAl EnErgy hAs BEEn proDuCED For yEArs on thE islAnD oF hAwAii, whErE ACtivE volCAniC
gEothErmAl EnErgy is nAturAl hEAt From thE intErior oF thEEArth thAt is ConvErtED to hEAt BuilDings AnD gEnErAtE ElECtriCity. thE iDEA oF hArnEssingEArth’s intErnAl hEAt is not nEw.As EArly As 1904, gEothErmAl powEr wAs usED in itAly. toDAy,EArth’s nAturAl intErnAl hEAt is BEing usED to gEnErAtE ElECtriCity in 21 CountriEs, inCluDing russiA, jApAn, nEw zEAlAnD, iCElAnD, mExiCo,EthiopiA, guAtEmAlA,E1 sAlvADor, thE philippinEs, AnD thE unitED stAtEs. totAl worlDwiDE proDuCtion is ApproAChing 9,000 mw (EquivAlEnt to ninE lArgE moDErn CoAl-Burning or nuClEAr powEr plAnts)--DouBlE thE Amount in 1980. somE 40 million pEoplE toDAy rECEivE thEir ElECtriCity From gEothErmAl EnErgy At A Cost CompEtitivE with thAt oF othEr EnErgy sourCEs. inE1 sAlvADor, gEothErmAl EnErgy is supplying 30% oF thE totAl ElECtriC EnErgy usED、howEvEr, At thE gloBAl lEvEl, gEothErmAl EnErgy suppliEs lEss thAn 0.15% oF thE totAl EnErgy supply.
gEothErmAl EnErgy mAy BE ConsiDErED A nonrEnEwABlE EnErgy sourCE whEn rAtEs oF ExtrACtion ArE grEAtEr thAn rAtEs oF nAturAl rEplEnishmEnt. howEvEr, gEothErrnAl EnErgy hAs its origin in thE nAturAl hEAt proDuCtion withinEArth, AnD only A smAll FrACtion oF thE vAst totAl rEsourCE BAsE is BEing utilizED toDAy. Although most gEothErmAl EnErgy proDuCtion involvEs thE tApping oF high hEAt sourCEs, pEoplE ArE Also using thE low-tEmpErAturE gEothErmAl EnErgy oF grounDwAtEr in somE AppliCAtions.
gEothErmAl systEms
on thE BAsis oF gEologiCAl CritEriA, sEvErAl typEs oF hot gEothErmAl systEms (with tEmpErAturEs grEAtEr thAn ABout 80℃, or 176℉) hAvE BEEn DEFinED, AnD thE rEsourCE BAsE is lArgEr thAn thAt oF Fossil FuEls AnD nuClEAr EnErgy ComBinED、A、Common systEm For EnErgy DEvElopmEnt is hyDrothErmAl ConvECtion, ChArACtErizED By thE CirCulAtion oF stEAm AnD/or hot wAtEr thAt trAnsFErs hEAt From DEpths to thE surFACE.
gEothErmAlEnErgy AnD thEEnvironmEnt
thE EnvironmEntAl impACt oF gEothErmAl EnErgy mAy not BE As ExtEnsivE As thAt oF othEr sourCEs oF EnErgy, But it CAn BE ConsiDErABlE. whEn gEothErmAl EnErgy is DEvElopED At A pArtiCulAr sitE, EnvironmEntAl proBlEms inCluDE on-sitE noisE, Emissions oF gAs, AnD DisturBAnCE oF thE lAnD At Drilling sitEs, DisposAl sitEs, roADs AnD pipElinEs, AnD powEr plAnts.DEvElopmEnt oF gEothErmAl EnErgy DoEs not rEquirE lArgE-sCAlE trAnsportAtion oF rAw mAtEriAls or rEFining oF ChEmiCAls, As DEvElopmEnt oF Fossil FuEls DoEs. FurthErmorE, gEothErmAl EnErgy DoEs not proDuCE thE AtmosphEriC pollutAnts AssoCiAtED with Burning Fossil FuEls or thE rADioACtivE wAstE AssoCiAtED with nuClEAr EnErgy. howEvEr, gEothErmAl DEvElopmEnt oFtEn DoEs proDuCE ConsiDErABlE thErmAl pollution From hot wAstE-wAtEr, whiCh mAy BE sAlinE or highly CorrosivE, proDuCing DisposAl AnD trEAtmEnt proBlEms.
gEothErmAl powEr is not vEry populAr in somE loCAtions Among somE pEoplE. For instAnCE, gEothErmAl EnErgy hAs BEEn proDuCED For yEArs on thE islAnD oF hAwAii, whErE ACtivE volCAniC
【分析解答题】LISTENING 5类型：Lecture话题：Biology详细内容：本篇是讨论有关动物迁徙的讲座。Professor说动物迁徙不像人类就是为了comfortable，人在冬天跑去佛罗里达去了，有个小姑娘做了一个研究关于蜻蜓的迁移路线，然后说这个实验有待进一步研究证实，这个蜻蜓到处飞，然后有一堆飞到了印度洋的小岛上，但这个蜻蜓为什么不会被风吹，那个季节的风是和他们的飞行线路相反的，因为他们飞的特别高，高处风向反过来了，所以他们就飞到了岛上，但是岛上没有淡水，蜻蜓要淡水生育，然后说是靠雨水形成的短暂小水坑繁殖，这些虫子飞来飞去是为了寻找一片奇怪的不知道是啥的东西，总之到哪那就下雨，他们就可以生育了，然后谁这蜻蜓到处飞，这样从印度飞到非洲去了，然后又飞回来了，这个过程中要四代蜻蜓才能完成，然后说过去认为大王蝶是飞的最远的昆虫，如果这是真的话，那么就会颠覆这个观点。
【单选题】 In the orbit of a planet around the Sun, the point closest to the Sun is called it the perihelion.
【单选题】 The author mentions all of the following as examples of complex behavior patterns evolved by birds EXCEPT
A．( migrating
B．( nesting
C．(singing
D．( running
A．( migrating
B．( nesting
C．(singing
D．( running
发布评论 查看全部评论