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某烃类化合物A的质谱图表明其相对分子质量为84，红外光谱表明分子中含有碳碳双键，核磁共振氢谱表明分子中只有一种类型的氢． （1）A的结构简式为 ； （2）A中的碳原子是否都处于同一平面？ ...
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高二下学期化学《》真题及答案
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某烃类化合物A.的质谱图表明其相对分子质量为84红外光谱表明分子中含有碳碳双键核磁共振氢谱表明分子中
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某烃类化合物A.的质谱图表明其相对分子质量为84红外光谱表明分子中含有碳碳双键核磁共振氢谱表明分子中
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新交通法规于2013年1月1日施行驾驶员不系安全带记3分罚100元．汽车上设置了安全带指示灯提醒驾驶员系好安全带．当安全带系好时相当于闭合开关指示灯不亮安全带未系好时相当于断开开关指示灯发光．图中符合上述要求的电路图是
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TheMetropolitanMuseumofArtMetisoneoftheworld'slargestandfinestartmuseums.Followingthesuggestedroutewillhelpyouexplorethemuseum.TheTempleofDendurThis2000﹣year﹣oldbuildingstoodneartheNileRiversurroundedbyawallthatnolongerexists.Butyoucanstillpeekthroughthegateway.Whose'house'isthis?It'snotforpeople.It'sforgods.Canyouidentifythem?Theyfaceout.Akingfacesinbringingofferings.MetSpeaksBringingtogethersomeofthemostrespectedthinkersonagivensubjectMetSpeaksfeatureslecturesdiscussionstalksfilmsandforumsinwhichcompellingvoicesexploretimelyissuesthatconnecttotheMet'sexhibitionsandpermanentcollection.Programtimesaudiencesandtopicsvary.TimetoSketchSettledownforafewminutespicksomethinginthisgalleryandhavefundrawingit.Enjoythechancetolookcarefullyasyoucreateyourownsketch.You'llbesurprisedathowmuchmoreyounoticethankstoexploringartbysketching.MetAccessMaketheMetyours!Choosefromavarietyofservicesandexcitingprogramsthataretailoredtomeettheneedsofvisitorswithdisabilities.Programtimesaudiencesandtopicsvary.AskfortheAccessInformationbrochureandAccessCalendaratInformationDesksdownloadtheAccessCalendarPDForcall212﹣650﹣2010oremailaccess@metmuseum.org.AdmissionFeeincludesadmissiontotheMainBuildingandsame﹣weekadmissiontotheCloistersmuseumandgardens.1Howmuchisrecommendedtopayfor3adultand2studentvisitors?A.﹩99B.﹩111C.﹩87D.﹩1032WhatcanyouknowabouttheTempleofDendur?A.Ahighwallissurroundingthe2000﹣year﹣oldbuildingnow.B.Akingfacesoutbringingofferingsinthetemple.C.ThebuildingisdesignedforEmperortolivein.D.TheNileRiverwitnessedthehistoryofthebuilding.3WhichofthefollowingisTRUEabouttheMet?A.IssuesconnectedwitheconomiccrisiswillbediscussedinMetSpeaks.B.Visitorscanchoosesomethinginthegalleryandhavefundrawingitonthewall.C.Disabledpeoplewillfindvariousservicesandprogramsofferedespeciallyforthem.D.Youcanemailaccess@metmuseum.orgformoreAdmissioninformation.
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若+y+2²=0则x+y2013等于A．-1 B．1 C．32014 D．-32014
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