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发表于:2019-02-09
问题详情:下列说法不正确的是A.1molNH4+的质量为18g B.SO2的摩尔质量为64g·mol-1C.摩尔是描述物质所含微粒多少的物理量 D.一个水...
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发表于:2020-03-08
问题详情:下列有关物质*质的叙述正确的是( )A.明*和芒*均具有净水作用B.*水久置后,漂白*和**均增强C.SO2通入Ba(NO3)2溶液中有沉淀产生D.NH3通入AlCl3溶液至过量先沉淀后沉淀溶解【回答】...
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发表于:2021-04-22
问题详情:已知某溶液含有Na+、Ba2+、Fe2+三种阳离子,那么溶液中的*离子可能是()A.SO B.Cl- C.OH- D.CO【回答】B...
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发表于:2020-05-28
问题详情:Hurryup, youcan'tcatchtheearlybus.()A.so B.and C.or【回答】C;知识点:连词题型:选择题...
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发表于:2021-01-26
问题详情:在含有大量的Na+、OH﹣、NO3﹣,该溶液中还可能大量存在的离子是()A.NH4+ B.H+ C.SO42﹣D.Mg2+【回答】【考点】离子共存问题.【分析】根据离子之间不能结合生成沉淀、气体、水、弱电解质...
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发表于:2020-01-09
问题详情:在KHSO4的稀溶液中和熔融状态下都存在的离子是()A.K+ B.H+ C.SO D.HSO【回答】A知识点:电离平衡题型:选择题...
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发表于:2020-12-11
问题详情:________Iknow,hehasbeentotheUSAforfurtherstudy.()A.Sofaras B.Sofar C.Aslongas D.Assoonas【回答】A知识点:词组短语题型:选择题...
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发表于:2021-07-01
问题详情:通入水中所得溶液呈碱*的气体是 A.NH3 B.NO2 C.SO2 D.HCl【回答】A知识点:气体的制备及实验方案设计...
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发表于:2022-08-10
问题详情:下列叙述中,正确的是()A.同质量的H2和Cl2含有的分子数相等B.SO的摩尔质量是96g·mol-1C.阿伏加德罗常数恰好为6.02×1023mol-1D.1molCO2的质量为44g/mol【回答】知识点:物质的量单元测...
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发表于:2021-12-17
问题详情:下列说法不正确的是A.*气可用于合成*物 B.SO2环境污染大,工业生产中没有价值C.纯碱在造纸工业中有着重要的应用 ...
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发表于:2019-11-05
问题详情:当溶液中有大量的H+和Ba2+时,下列离子中有可能大量存在的是( )A.SO B.CO C.Cl- D.OH-【回答】C知识点:离子反应题型:选择题...
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发表于:2022-08-12
问题详情:下列气体既易溶于水并且水溶液显碱*的是( ) A.NH3 B.HCl C.SO2 D.CH4 【回答】A知识点:物质的分离提纯和检验题型:选择题...
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发表于:2018-11-17
Heinquiredaboutthevarieties,specificationsandprice,andsoonandsoforth.seenmanybeautifulplacesandmadealotoffriendsandsoonandsoforth.Andsoonandsoforth...Beforeweareforgotten...
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发表于:2020-10-09
问题详情: Thepriceofelectricityisonanupwardtrend,so______yourelectriccarwillsomehowburnabigholeinyourpocket.A.purchasing B.charging C....
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发表于:2022-04-16
Thisissososotrueforme.Heplaystennisonlysoso.Infact,love,notjustsoso."How'sbusiness?""Oh,onlysoso."Ineverdidseeanythingsoslenderandsofine,sosoftandsoneat.OK.I'msosor...
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发表于:2019-11-11
问题详情:Somefriendsinviteyouoverandserveyouadeliciousdinner. Someonelendsyouhiscarwhilethere’ssomethingwrongwithyours.Youaresick,andafriendbringsyouamealandcaresforyou....
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发表于:2018-06-02
Someso-and-sohaspinchedmytowel.PeoplehavedonesoinallageshindusliveaccordingtoHinduismmuslimsliveaccordingtoIslamandso-and-solivesaccordingtosuch-and-suchism.Canalsobeasso...
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发表于:2021-02-01
问题详情:--IreallyhopeIcangotoBeijingnextyear.--So______I.A.did B.do C.am D.was 【回答】B知识点:倒装句题型:选择...
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发表于:2022-04-08
问题详情: So______hadhebeeninwatchingthecarpassingbythathedidn’tnoticehisfriends..A.disturbed B.surprised C.excited D.abso...
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发表于:2019-11-19
问题详情:Teensarebusypeople.Theybalancehighschoolandfriends;someaddjobsandextracurricular(课外的)activitiestothemix. 36 Involveyourteenwithavarietyofactivitiesfromyourli...
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发表于:2021-04-03
问题详情: ZhouHualikesdrawing,so________Ann. A.is B.does C.was D.do【回答】B知识点:相似相近词比较题型:选择题...
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发表于:2020-08-29
问题详情:---Iwanttoknowifyoursonwillgotothezoo.Ifyoursondoes,so__________.---Well,heisgladtobethere. does mine ...
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发表于:2021-03-01
问题详情:—TheyhavebeentoAustralia.—So_____I. been ...
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发表于:2017-07-10
"Therestwere"so-so"or"unsure.Alasresultswereonlyso-so.Infact,manythingsandpeoplearejustso-so....
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发表于:2018-09-02
Infact,love,notjustsoso.TheywereSpanishpuddings,tastedjustsoso!ButItellyou,thisswordisjustsoso.Mygradeisjustsoso,butI'mnotworried.Lifeisjustsoso,keeppositivemood,against...