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發表於:2021-08-16
問題詳情:.HA和HB兩種*的溶液分別加水稀釋時,pH變化的簡圖如圖所示,下列敍述中不正確 的是( ) A.HA是一種強* B.x點,c(A-)=c(B-) C.HB是一種弱...
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發表於:2020-11-12
問題詳情:Oncyearago,whenI was 15,Ithought I 1 (live)forever.I hadgreatfriendsanddidwellinmystudies.One day afternoon,wegointoChris'carandstarted gotohisbouseanel...
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發表於:2022-08-08
問題詳情:(Ⅰ)某二元*(H2A)在水中的電離方程式是:H2A===H++HA-,HA-H++A2-。(1)Na2A溶液顯________(填“**”、“中*”或“鹼*”)。理由是_____________________________________________________...
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發表於:2021-06-22
問題詳情:Therearevariouskindsofthemeparks.Somearefamous 61 havingthebiggestorlongestrollercoasters,othersfor 62 (show)thefamoussightsandsoundsofculture.Whi...
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發表於:2022-03-27
讓我們首先簡要介紹一下高可用*(HA)和RAID,然後再研究DRBD的架構和用法。我首次接觸高可用*(HA)是在20世紀80年代,當時在從事商業對地同步通訊衞星方面的工作。...
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發表於:2018-10-23
Younger-skewingartists,suchassinger-rapperKe$ha,enjoyalargersliceofthedigitalpiethanolder-skewingartistssuchasJamesTaylor,hesays."TillTheWorldEnds"writer,Ke$ha,wantstoc...
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發表於:2021-09-13
問題詳情: Peoplewhoareslightlyoverweightormildlyobese(肥胖的)havealowerriskofearlydeaththannormalweightindividuals(個人;個體),accordingtoanewanalysisofnearly100in...
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發表於:2020-06-06
問題詳情:(1)25。C時,0.1mol/L的HA溶液中c(H+)/c(OH-)=1010.請回答下列問題:①HA是__________(填“強電解質”或“弱電解質”)。②在加水稀釋HA溶液的過程中,隨着水量的增加而增大的是______...
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發表於:2021-11-03
問題詳情:—I’mtootired.Iworkedverylatelastnight.—Ithinkyouhaveagoodrest.A.should B.need C.may D.mustn’t【回答】A。考...
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發表於:2023-12-27
1、Tohumandhanone'swords2、Thedriver'shandbegantojumpagain.Formysafety,Ihadtohumandhawafewwordstohangupthephone....
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發表於:2019-09-17
問題詳情:某二元*H2A在水中的電離方程式是H2A=H++HA﹣,HA﹣H++A2﹣.回答下列問題:(1)Na2A溶液顯 (填“**”、“中*”或“鹼*”),理由是 ...
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發表於:2019-12-13
問題詳情:TheleadersofDenmarkandFinlandsaidon Fridaythat China hasshoweda willingness to __________ global efforts to bail out debt-ridden European countries....
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發表於:2020-04-24
問題詳情:已知25℃HB電離常數K=4×10-7。H2A===H++HA-,HA-H++A-(K=3×10-6);有關0.1mol·L-1的兩種*H2A、HB溶液,下列説法不正確的是()A.分別取等體積的兩種*溶液稀釋100倍後,pH(H2A)<pH(HB)B.NaHA溶液一...
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發表於:2020-10-22
問題詳情:____you____thebook?A.Are;haveB.Have;gotC.Do;getD.Are;having【回答】C知識點:動詞時態題型:選擇題...
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發表於:2017-10-18
Ha!Didyouseewhattheydidthere?IfyouendupwithaCharlieBrownsituation,withtheentireclassha-ha-ing,that'sadisaster,andpeoplewillloatheyouforit.Clearly,anyhaconfigurationrequi...
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發表於:2019-09-19
問題詳情:.已知HA為一元*,常温下向20mL0.01mol/L的HA溶液中滴加0.01mol/L的NaOH溶液,測得溶液pH與所加NaOH溶液體積關係如圖所示。下列説法不正確的是A.常温下,該*的電離常數K=10−5.6B.該測...
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發表於:2021-02-02
問題詳情: 已知NaHA溶液顯**,溶液中存在以下平衡: ①HA- +H2OH2A+OH-②HA-H++A2- 向0.1 mol·L-1的NaHA溶液中分別加入以下物質,下列有關説法正確的是() A.加入等物質的量的Na2A...
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發表於:2021-07-05
問題詳情:---YoudohavethebookI’vebeenlookingforwardto?---Ha,sure.I____ifIdidn’t.A.wouldneverhavecalled B.hadn’tcalled C.won’tcall ...
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發表於:2020-06-24
問題詳情:I.H2A在水中存在以下平衡:H2AH++HA-,HA-H++A2-。(1)NaHA溶液顯**,則溶液中離子濃度的大小順序為_____。(2)常温時,若向0.1mol/L的NaHA溶液中逐滴滴加0.1mol/LKOH溶液至溶液呈中*。此時該...
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發表於:2021-08-06
問題詳情: he asmallnoseorbigone? A.Do,has B.Does,has C.Does,have D.Do,have【回答】D知識點:一般疑問句題型:選擇題...
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發表於:2019-10-03
問題詳情:accountfor,dependon,teamup,settledown,takeon,confirm,haveagiftfor,getawaywith1. Asateacher,shecan’thaveanystudents______________________cheatingintheexa...
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發表於:2020-10-25
問題詳情:ArockgroupcalledtheRocketCrewisontour.Theiragent(經紀人)hasaskedthetownofficialsaboutWilbourCityonthetour.Thestadiuminthetownislargeenoughtoholdtheexpectedcrowd.T...
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發表於:2022-01-15
問題詳情:不能*一元*HA為弱*的是( )A.相同條件下HA溶液的導電*弱於鹽* B.0.1mol/L的HA溶液pH為3溶液中滴加石蕊顯紅* 溶液顯鹼*【回答...
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發表於:2023-12-31
1、Schulmanisalittletiredofthehoo-haabouttheall-womenteam.2、There'sbeensomuchhoo-haoverthelaunchofGoogleChromeIthoughtI'ddoadirectcomparisonwiththepoweruser'sfavourit...
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發表於:2019-05-20
問題詳情: Ⅰ.已知H2A在水中存在以下電離:H2A=H++HA- HA-H++A2-。某温度下,若向0.1mol/L的NaHA溶液中逐滴加入0.1mol/LKOH溶液至中*(忽略體積變化),此時該溶液中的下列關係一定正確...