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C7H16的同分异构体中，同时含有3个甲基的结构有（ ）
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高三下学期化学《》真题及答案
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邻甲基苯甲酸有多种同分异构体其中属于酯类且分子结构中含有甲基和苯环的异构体有
6种
5种
4种
3种
邻甲基苯甲酸有多种同分异构体其中属于酯类但分子结构中含有甲基和苯环的异构体有
2种
3种
4种
5种
分子式为C7H16的烷烃中含有3个甲基的同分异构体的数目是---------------------
2
3
4
5
分子式为C7H16的烷烃中含有三个甲基的同分异构体的数目是
2种
3种
4种
5种
分子式为C7H16的烷烃中含有3个甲基的同分异构体数目是
2种
3种
4种
5种
分子式为C7H16的烷烃中在结构式中含有3个甲基的同分异构体的数目是
2
3
4
5
写出同时满足下列条件的的一种同分异构体的结构简式__________________________
化学式为C.7H.16的烷烃的各同分异构体中含有3个甲基的同分异构体的数目为
2种
3种
4种
5种
烷烃C7H16所有的同分异构体中含有三个甲基的同分异构体有
2种
3种
4种
5种
分子式为C7H16含有三个甲基的同分异构体的数目是
2种
3种
4种
5种
C.9H10O2的有机物有多种同分异构体满足下列条件的同分异构体有________种写出其中任意一种
C5H10Cl2分子中含有一个甲基的同分异构体有多少种
5
6
7
8
邻甲基苯甲酸有多种同分异构体其中属于酯类但分子结构中含有甲基和苯环的异构体有
2种
3种
4种
5种
化学式为C.7H.16的烷烃中在结构式中含有3个甲基的同分异构体数目是
2
3
4
5
.邻甲基苯甲酸有多种同分异构体其中属于酯类的含有苯环的同分异构体有
6种
2种
4种
5种
写出己烷的同分异构体________________________________________
关于分子式为C5H10的烯烃的下列说法正确的是
该烯烃的一种同分异构体为CH
2
=CHCH（CH
3
）
2
名称为2－甲基－3－丁烯
其属于烯烃的同分异构体有5种
有一种同分异构体的名称为：2,2－二甲基－1－丙烯
该物质的结构简式最多有两个侧链
邻甲基苯甲酸有多种同分异构体其中属于酯类且分子结构中含有甲基和苯环的同分异构体有
3种
4种
5种
6种
邻甲基苯甲酸有多种同分异构体其中属于酯类且分子结构中含有甲基和苯环的异构体有
3种
4种
5种
6种
邻甲基苯甲酸有多种同分异构体其中属于酯类且结构中含有苯环和甲基的同分异构体有
3种
4种
5种
6种
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We'llbeexploringdifferentapproachestogathering信息.
你考试失败了.换句话说你没有通过驾照考试. Youfailedinthetest.youdidn'tpassthedrivingtest.
10分Istartedoutinlifewithfewadvantages.Ididnotgraduatefromhighschool.Iworkedatmenial不体面的jobs.Ihadlimited有限的educationlimitedskillsandalimitedfuture. AndthenIbeganaskingWhyaresomepeoplemoresuccessfulthanothers?Thisquestionchangedmylife. OvertheyearsIhavereadthousandsofbooksandarticlesonthesubjectsofsuccessandachievement成就.Itseemsthatthereasonsfortheseaccomplishmentshavebeendiscussedandwrittenaboutformorethantwothousandyearsineverypossibleway.Onequality品质thatmostphilosophersteachersandexpertsagreeonistheimportanceofself﹣discipline自律.AsAlTomsiksummarized总结ityearsagoSuccessistonsofdiscipline. SomeyearsagoIattendedaconferenceinWashington.ItwasthelunchbreakandIwaseatingatanearbyfoodfair.TheareawascrowdedandIsatdownatthelastopentablebymyselfeventhoughitwasatableforfour.Afewminuteslateranoldergentlemanandayoungerwomanwhowashisassistantcamealongcarryingtraysoffoodobviouslylookingforaplacetosit.WithplentyofroomatmytableIimmediatelyaroseandinvitedtheoldergentlemantojoinme.Hewashesitant犹豫的butIinsisted.Finallythankingmeashesatdownwebegantochatoverlunch. ItturnedoutthathisnamewasKopKopmeyer.AsithappenedIimmediatelyknewwhohewas.Hewasalegendinthefieldofsuccessandachievement.KopKopmeyerhadwrittenfourlargebookseachofwhichcontained250successprinciplesthathehadobtainedfrommorethanfiftyyearsofresearchandstudy.Ihadreadallfourbooksfromcovertocovermorethanonce. AfterwehadchattedforawhileIaskedhimthequestionthatmanypeopleinthissituationwouldaskOfalltheonethousandsuccessprinciplesthatyouhavediscoveredwhichdoyouthinkisthemostimportant? HesmiledatmewithatwinkleinhiseyeasifhehadbeenaskedthisquestionmanytimesandrepliedwithouthesitatingThemostimportantsuccessprincipleofallwasstatedbyThomasHuxleymanyyearsago.Hesaid'Dowhatyoushoulddowhenyoushoulddoitwhetheryoufeellikeitornot.' HewentontosayThereare999othersuccessprinciplesthatIhavefoundinmyreadingandexperiencebutwithoutself﹣disciplinenoneofthemwork. 1WhydidthewriteraskthequestioninParagraph2? A.Becausehewasn'tsatisfiedwithhimself. B.Becausehewasapersonofself﹣discipline. C.Becausehedislikethosesuccessfulpeople. D.Becausehewantedtosharehisideaonsuccess. 2Whatmadethewriterinvitetheoldergentlemantojoinhim? A.Hisgreatkindness. B.Thengentleman'sfame. C.Hiseagernessforsuccess. D.Thegentleman'sgoodmanners. 3Whatarethefourlargebooksabout? A.Personalchanges B.Thesecretofsuccess C.Sayingsofwisdom D.Thegentleman'slegend.
Itwillbecomewarmwhenspringcome.
Sheissupposedtoimprovingherbadattitude.
30分IbelieveIhadtheperfectlife.BecauseIwasaboutto1myhighschoolandonmywaytocollegeIhadgreatfriendsandalovingfamily.Therewasnothing2.ButIspoketoosoon. Itwasaround925a.m.thatIheardthenewsthatwould3mylifeforeverMybrotherZachhadbeeninacaraccident.Hefoughtforfivedaysbeforehe4.ThatdayIbecameanonlychild.Ifeltextremely5. AfterZach'sdeathIfound6infood.IatethenIsleptthenIateagain.Icouldn'tcry.IcouldhardlyfeelanythingandIwas7.Istoppedbuildingrelationshipsforfearthattheywouldendjustas8asZach'slife.AlsoIbecamenervousaboutanypotentially9situations﹣drivinglateatnight﹣butIcouldn'texpressthisfearoflife10Iwantedtobestrongformyparents.Isawmyparents'11worsethanminebecauseofthelosingoftheirson.Ididn'twantthemto12me.Ialsoexperiencedalotof13becauseIwasangryaboutwhythesadnesshadhappenedtomeandInever14fromthisemotion. NowithasbeennearlyfiveyearssinceZach'sdeath.Idon't15lifeanymoreIfactitbravely.I16myfriendshipsandbegansocializingmore.Ieven17Zach'sstorywithpeoplearoundme.althoughmynewfriendsmethimtheyknowaboutZach. OnelessonIlearnedfromlosingmybrotherwasnevertobe18tosayIloveyou.Ilovedmybrotherbutitwastoolateto19itloudly.ThelasttimeIremembertellingmybrotherIlovedhimwaswhenhewaswhenhewasdying.Don'tmakethis20likeme. 1A.admit B.finish C.skip D.determine 2A.earning B.reaching C.competing D.missing 3A.regret B.change C.beautify D.solve 4A.tookaway B.gaveaway C.passedaway D.flewaway 5A.lonely B.tired C.bored D.nervous 6A.interest B.benefit C.guidance D.relief 7A.funny B.hopeful C.patient D.senseless 8A.finally B.suddenly C.nearly D.seriously 9A.difficult B.particular C.dangerous D.tense 10A.so B.if C.unless D.because 11A.pain B.discouragement C.willingness D.memory 12A.thinkabout B.dreamabout C.talkabout D.careabout 13A.surprise B.anger C.disappointment D.doubt 14A.escaped B.prevented C.stopped D.suffered 15A.damage B.choose C.fear D.leave 16A.produced B.rebuilt C.communicated D.raised 17A.copy B.advertise C.share D.perform 18A.stubborn B.satisfied C.brave D.afraid 19A.explore B.express C.spread D.pray 20A.mistake B.decision C.explanation D.difference
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