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关于理工类类论文范文,与中石油职英语2016版相关毕业论文提纲

本论文是一篇关于理工类类毕业论文提纲,关于中石油职英语2016版相关在职研究生毕业论文范文。免费优秀的关于理工类及第一篇及短文方面论文范文资料,适合理工类论文写作的大学硕士及本科毕业论文开题报告范文和学术职称论文参考文献下载。

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AWastedisposalsitesarelocatedclosetoreactorsandinplacessuitablefortheregionalcircumstances.

BGeologicalrepositoriesarelocatedinavarietyofrocktypes.

CSpentnuclearfuelandhigh-levelnuclearwasteismovedtodevelopingcountries.

DWastedisposalsitesarelocatedfarawayfromreactors.

第三篇PlantGas

Scientistshavebeenstudyingnaturalsourcesofmethanefordecadesbuthadn'tregardedplantsasaproducer,notesFrankKeppler,ageochemistattheMaxPlanckInstituteforNuclearPhysicsinHeidelberg,Germany.NowKepplerandhiscolleaguesfindthatplants,fromgrassestotrees,mayalsobesourcesofthegreenhousegas.Thisisreallysurprising.becausemostscientistsassumedthatmethaneproductionrequiresanoxygen-freeenvironment.

Previously,researchershadthoughtthatitwasimpossibleforplantstomakesignificantamountsofthegas.Theyhadassumedthatmicrobesneedtobeinenvironmentswithoutoxygentoproducemethane.Methaneisagreenhousegas,likecarbondioxide.GasessuchasmethaneandcarbondioxidetrapheatinEarth'satmosphereandcontributetoglobalwarming.

Initsexperiments.Keppler'steamusedsealedchambersthatcontainedthesameconcentrationofoxygenthatEarth'satmospherehas.TheymeasuredtheamountsofmethanethatWerereleasedbybothlivingplantsanddriedplantmaterial,suchasfallenleaves.

Withthedriedplants,theresearcherstookmeasurementattemperaturesrangingfrom30degreesCelsiusto70degreesC.At30degreesC.theyfound,agramofdriedplantmaterialreleasedupto3nanogramsofmethaneperhour.(Onenanogramisabillionthofagram.)Withevery10-degreeriseintemperature,theamountofmethanereleasedeachhourroughlydoubled.

Livingplantsgrowingattheirnormaltemperaturesreleasedasmuchas370nanogramsofmethanepergramofplanttissueperhour.Methaneemissionstripledwhenlivinganddeadplantwasexposedtosunlight.

.Becausetherewasplentyofoxygenavailable,it'sunlikelythatthetypesofbacteriathatnormallymakemethanewereinvolved.Experimentsonplantsthatweregrowninwaterratherthansoilalsoresumedinmethaneemissions.That'sanotherstrongsignthatthegascamefromtheplantsandnotsoilmicrobes.

Thenewfindingisan"interestingobservation,"saysJenniferY.King,abiogeochemistryattheUniversityofMinnesotainSt.Paul.Becausesometypesofsoilmicrobesconsumemethane,theymaypreventplant-producedmethanefromreachingtheatmosphere.Fieldtestswillbeneededtoassesstheplant'sinfluence,shenotes.

41.Whatwasscientists'understandingofmethane

AItwasproducedfromplants.

BItwasnotagreenhousegas.

CItwasproducedinoxygen-freeenvironments.

DIttrapsmoreheatthananyothergreenhousegas

42.Totestwhetherplantsareasourceofmethane,thescientistscreated

Aaoxygen-freeenvironment.

BanenvironmentwiththesameconcentrationofoxygenastheEarthhas.

Cacarbondioxide-freeenvironment

Danenvironmentfilledwiththegreenhousegas.

43.Whichstatementistrueofthemethaneemissionsofplantsintheexperiment！

AThelowerthetemperature,thehighertheamountofmethaneemissions.

BLivingplantsreleaselessmethanethandriedplantsatthesametemperature.

CWhenexposedtosunlight,plantsstopreleasingmethane.

DThehigherthetemperature,thegreatertheamountofmethaneemissions.

44.whichofthefollowingaboutmethaneisNotmentionedinthepassage

APlantsgrowinginsoilreleasemethane.BPlantsgr0winginwaterreleasemethane.

CSoilmicrobesConsumemethane.DMicrobesinplantsproducemethane.

45.Whatisthebeneficialpointofsomemicrobesconsumingplant-producedmethane

AMethanebeeslesspoisonous.BMethaneisturnedintoafertilizer.

CLessmethanereachestheatmosphere.DAirbeescleaner.

第5部分:补全短文(第46—50题,每题2分,共10分)

阅读下面的短文,文章中有5处空白,文章后面有6组文字,请根据文章的内容选择5组文字,将其分别放回文章原有位置,以恢复文章原貌.请将答案涂在答题卡相应的位置上.

TheBuildingofthePyramids

Theoldeststonebuildingsintheworldarethepyramids.____46____ThereareovereightyofthemscatteredalongthebanksoftheNile,someofwhicharedifferentinshapefromthetruepyramids.Themostfamousofthesearethe"Step"pyramidandthe"Bent"pyramid.

Someofthepyramidsstilllookmuchthesameastheymusthavedonewhentheywerebuiltthousandsofyearsago.Mostofthedamagesufferedbytheothershasbeenatthehandsofmenwhowerelookingfortreasureor,moreoften,forstonetouseinmodernbuildings.

____47____Thesearegoodreasonswhytheycanstillbeseentoday,butperhapsthemostimportantisthattheywereplannedtolastforever.

____48____However,therearenowritingsorpicturestoshowushowtheEgyptiansplannedorbuiltthepyramidsthemselves.____49____Nevertheless,byexaminingtheactualpyramidsandvarioustoolswhichhavebeenfound,archaeologistshaveformedafairlyclearpictureofthem.

Onethingiscertain:theremusthavebeenmonthsofcarefulplanningbeforetheycouldbegintobuild.____50____Youmaythinkthiswouldhavebeeneasywithmilesandmilesofemptydesertaround,butapyramidcouldnotbebuiltjustanywhere.Certainruleshadtobefollowed,andcertainproblemshadtobeovere.

AThedryclimateofEgypthashelpedtopreservethepyramid

关于理工类类论文范文,与中石油职英语2016版相关毕业论文提纲参考文献资料：