- 問題詳情:在KHSO4的稀溶液中和熔融狀態下都存在的離子是()A.K+ B.H+ C.SO D.HSO【回答】A知識點:電離平衡題型:選擇題...
- 31334
- 問題詳情:________Iknow,hehasbeentotheUSAforfurtherstudy.()A.Sofaras B.Sofar C.Aslongas D.Assoonas【回答】A知識點:詞組短語題型:選擇題...
- 29618
- 問題詳情:當溶液中有大量的H+和Ba2+時,下列離子中有可能大量存在的是( )A.SO B.CO C.Cl- D.OH-【回答】C知識點:離子反應題型:選擇題...
- 32303
- 問題詳情:下列説法不正確的是A.*氣可用於合成*物 B.SO2環境污染大,工業生產中沒有價值C.純鹼在造紙工業中有着重要的應用 D.硫*銅可作泳池池水消毒劑【回答】B【解析】A.*氣的用途比較廣泛,可...
- 30110
- 問題詳情:Hurryup, youcan'tcatchtheearlybus.()A.so B.and C.or【回答】C;知識點:連詞題型:選擇題...
- 30534
- 問題詳情:通入水中所得溶液呈鹼*的氣體是 A.NH3 B.NO2 C.SO2 D.HCl【回答】A知識點:氣體的製備及實驗方案設計題型:選擇題...
- 32623
- 問題詳情:下列敍述中,正確的是()A.同質量的H2和Cl2含有的分子數相等B.SO的摩爾質量是96g·mol-1C.阿伏加德羅常數恰好為6.02×1023mol-1D.1molCO2的質量為44g/mol【回答】知識點:物質的量單元測試題型:選擇題...
- 8164
- 問題詳情:下列説法不正確的是A.1molNH4+的質量為18g B.SO2的摩爾質量為64g·mol-1C.摩爾是描述物質所含微粒多少的物理量 D.一個水分子的質量約等於18/(6.02×1023)g【回答】C【詳解】A.NH4+的摩爾質量為18g/mol,由m=nM可...
- 19485
- 問題詳情:在含有大量的Na+、OH﹣、NO3﹣,該溶液中還可能大量存在的離子是()A.NH4+ B.H+ C.SO42﹣D.Mg2+【回答】【考點】離子共存問題.【分析】根據離子之間不能結合生成沉澱、氣體、水、弱電解質等,則離子大量共存,以此來解答.【解答】解:A.NH4+、OH﹣結合生成弱電解質,不能大量共存,故A錯誤...
- 20568
- 問題詳情:下列氣體既易溶於水並且水溶液顯鹼*的是( ) A.NH3 B.HCl C.SO2 D.CH4 【回答】A知識點:物質的分離提純和檢驗題型:選擇題...
- 12423
- 問題詳情:下列有關物質*質的敍述正確的是( )A.明*和芒*均具有淨水作用B.*水久置後,漂白*和**均增強C.SO2通入Ba(NO3)2溶液中有沉澱產生D.NH3通入AlCl3溶液至過量先沉澱後沉澱溶解【回答】【*】C【解析】A.明*水解生成的*氧化鋁具有吸附*,可以用來淨水;芒*的主要成分為Na2SO4·1...
- 14098
- 問題詳情:已知某溶液含有Na+、Ba2+、Fe2+三種陽離子,那麼溶液中的*離子可能是()A.SO B.Cl- C.OH- D.CO【回答】B知識點:鐵和鐵的化合物題型:選擇題...
- 13277
- 問題詳情: Thepriceofelectricityisonanupwardtrend,so______yourelectriccarwillsomehowburnabigholeinyourpocket.A.purchasing B.charging C.mending D.handling【回答】B知識點:單詞題型:選擇題...
- 6351
- 問題詳情:Somefriendsinviteyouoverandserveyouadeliciousdinner. Someonelendsyouhiscarwhilethere’ssomethingwrongwithyours.Youaresick,andafriendbringsyouamealandcaresforyou.Howdoyoushowyourgratitude(感謝)?Sometimessimplysayingthankyouisenough.Atothertim...
- 32782
- 問題詳情: So______hadhebeeninwatchingthecarpassingbythathedidn’tnoticehisfriends..A.disturbed B.surprised C.excited D.absorbed【回答】D知識點:形容詞題型:選擇題...
- 19624
- 問題詳情:—TheyhavebeentoAustralia.—So_____I. been 【回答】D 此句為so引導的完全倒裝句。其含義為“A如此,B也如此。”其結構是so...
- 14655
- Thisissososotrueforme.Heplaystennisonlysoso.Infact,love,notjustsoso."How'sbusiness?""Oh,onlysoso."Ineverdidseeanythingsoslenderandsofine,sosoftandsoneat.OK.I'msosorry.YetsopleasingthePain,sosoftisthedart.Howareyougettingalong.Oh,soso.Mygradeisj...
- 14880
- Heinquiredaboutthevarieties,specificationsandprice,andsoonandsoforth.seenmanybeautifulplacesandmadealotoffriendsandsoonandsoforth.Andsoonandsoforth...Beforeweareforgotten,wewillbeturnedintokitsch.Supportservice;computer&software,publication,media,inf...
- 17255
- 問題詳情:Teensarebusypeople.Theybalancehighschoolandfriends;someaddjobsandextracurricular(課外的)activitiestothemix. 36 Involveyourteenwithavarietyofactivitiesfromyourlifeandrelatethemtoyourteen’sexperiences.Largeproject37 Createatimelineforthepro...
- 29220
- 問題詳情:---Iwanttoknowifyoursonwillgotothezoo.Ifyoursondoes,so__________.---Well,heisgladtobethere. does mine mine【回答】C知識點:倒裝句題型:選擇題...
- 32131
- 問題詳情:--IreallyhopeIcangotoBeijingnextyear.--So______I.A.did B.do C.am D.was 【回答】B知識點:倒裝句題型:選擇題...
- 14258
- "Therestwere"so-so"or"unsure.Alasresultswereonlyso-so.Infact,manythingsandpeoplearejustso-so....
- 12217
- Infact,love,notjustsoso.TheywereSpanishpuddings,tastedjustsoso!ButItellyou,thisswordisjustsoso.Mygradeisjustsoso,butI'mnotworried.Lifeisjustsoso,keeppositivemood,againstthesun,allthewayforward.Theycannotpayalittlemoreefforttodoanything,theyknowthere...
- 13102
- Someso-and-sohaspinchedmytowel.PeoplehavedonesoinallageshindusliveaccordingtoHinduismmuslimsliveaccordingtoIslamandso-and-solivesaccordingtosuch-and-suchism.Canalsobeassociatedwithanger,inwhichyouthink,"WhyonearthshouldIcarethatso-and-sohasasunburn?...
- 23479
- 問題詳情: ZhouHualikesdrawing,so________Ann. A.is B.does C.was D.do【回答】B知識點:相似相近詞比較題型:選擇題...
- 4151