当前位置:考试网  > 试卷库  > 学历类  > 升学考试  > 高考  > 化学  > 天然气燃烧后产生H2O和CO2,是一种绿色燃料,其主要成分是甲烷(CH4),如何用实验证明甲烷中含有碳、氢两种元素?
试题预览

天然气燃烧后产生H2O和CO2,是一种绿色燃料,其主要成分是甲烷(CH4),如何用实验证明甲烷中含有碳、氢两种元素?

查看答案
收藏
纠错
正确答案:
答案解析:
你可能感兴趣的试题

高频电流有一个主要特点()

康复医学的对象:()

交流包括_______和_______。

康复的治疗目的是改善和提高病、伤、残者的功能障碍,强调作为人的生活质量,以提高功能,全面康复,重返社会为目标的。全面康复包括()

谵妄属于下列哪种障碍?

热门试题 更多>
试题分类: 国家电网招聘考试
练习次数:2次
试题分类: 国家电网招聘考试
练习次数:1次
试题分类: 社区工作人员
练习次数:0次
ThediscoveryoftheAntarcticnotonlyprovedoneofthemostinterestingofallgeographicaladventures,butcreatedwhatmightbecalled“theheroicageofAntarcticexploration”.Bytheirtremendousheroism,mensuchasShakleton,Scott,andAmundsencausedanewcontinenttoemergefromtheshadows,andyetthatheroicage,littlemorethanacenturyold,isalreadypassing.Modernscienceandinventionsarerevolutionizingtheendurance,futurejourneysintotheseicywasteswillprobablydependonmotorvehiclesequippedwithcaterpillartractionratherthanonthedogsthatearlierdiscoverersfoundsoinvaluableandhardlycomparable. FewrealizethatthisAntarcticcontinentisalmostequalinsizetoSouthAmerica,andenormousfieldofworkawaitsgeographersandprospectors.Thecoastsofthiscontinentremaintobeaccuratelycharted,andthemapingofthewholeoftheinteriorpresentsaformidabletasktothecartographerswhoundertakethework.Oncetheirlaborsarecompleted,itwillbepossibletoprospectthevastnaturalresourceswhichscientistsbelievewillfurnishoneofthelargesttreasurehoardsofmetalsandmineralstheworldhasyetknown,andalmostinexhaustiblesourcesofcopper,coal,uranium,andmanyotheroreswillbecomeavailabletoman.SuchdiscoverieswillusherinaneraofpracticalexploitationoftheAntarcticwastes. Thepolardarknesswhichhidesthiscontinentforthesixwintermonthswillbedefeatedbyhugebatteriesoflight,andmakepossibletheestablishingofair-fieldsforthefutureinter-continentalairservicesbymakingtheseareasaslightasday.Presentflyingrouteswillbecompletelychanged,fortheAntarcticrefuelingbaseswillmakeflightsfromAustraliatoSouthAmericacomparativelyeasyoverthe5,000milesjourney. Theclimateisnotlikelytoofferaninsuperableproblem,fortheexplorerAdmiralByrdhasshownthattheclimateispossibleevenformencompletelyuntrainedforexpeditionsintothosefrozenwastes.Someofhispartiesweremenwhohadneverseensnowbefore,andyetherecordsthattheysurvivedtherigorsoftheAntarcticclimatecomfortably,sothat,providedthattheappropriateinstallationsaremade,wemayassumethathumanbeingsfromallcountriescouldlivetheresafely.Byrdevenaffirmsthatitisprobablythemosthealthyclimateintheworld,fortheintensecoldofthousandsofyearshassterilizethiscontinent,andrendereditabsolutelygermfree,withtheconsequencesthatordinaryandextraordinarysicknessanddiseasesfromwhichmansuffersinotherzoneswithdifferentclimatesarehereutterlyunknown.Thereexistnoproblemsofconservationandpreservationoffoodsupplies,forthelatterkeepindefinitelywithoutanysignsofdeterioration;itmayevenbethatlatergenerationswillcometoregardtheAntarcticasthenaturalstorehouseforthewholeworld. Plansarealreadyonfoottosetuppermanentbasesontheshoresofthiscontinent,andwhatsofewyearsagowasregardedasa“deadcontinent”nowpromisestobeamostactivecenterofhumanlifeandendeavor. 1.WhendidmanbegintoexploretheAntarctic? A.About100yearsago. B.Inthiscentury. C.Atthebeginningofthe19thcentury. D.In1798. 2.Whatmusttheexplorersbe,eventhoughtheyhavemodernequipmentandtechniques? A.Braveandtough B.Stubbornandarrogant. C.Well-likedandhumorous. D.Stoutandsmart. 3.Themosthealthyclimateintheworldis___. A.inSouthAmerica. B.intheArcticRegion. C.intheAntarcticContinent. D.intheAtlanticOcean. 4.WhatkindofmetalsandmineralscanwefindintheAntarctic? A.Magnetite,coalandores. B.Copper,coalanduranium. C.Silver,naturalgasanduranium. D.Aluminum,copperandnaturalgas. 5.Whatisplannedforthecontinent? A.Buildingdamsalongthecoasts. B.Settingupseveralsummerresortsalongthecoasts. C.Mappingthecoastandwholeterritory. D.Settinguppermanentbasesonthecoasts.
试题分类: 大学英语六级
练习次数:3次
试题分类: 自考专业(建筑工程)
练习次数:0次
试题分类: 国家电网招聘考试
练习次数:0次
扫一扫,手机做题