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【单选题】
关门列车中连续连挂不得超过（）辆。A.
1
B.
2
C.
3
D.
4
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举一反三
【单选题】下列阴离子的水溶液,若浓度(单位:mol/L)相同,则何者碱性最强
A.
CN-(KHcN=6.2×10-10)
B.
S2-(KHs-=7.1×10-15,KH2s=1.3×10-7)
C.
F-(KHF=3.5×10-4)
D.
CH3COO-(KHAC=1.8X10-5)
【单选题】下列阴离子的水溶液,若浓度(单位:mol/L)相同,则何者碱性最强( )
A.
CN-(KCN=6.2x10-10)
B.
S(KHS-=7.1x10-15,)
C.
F-(KHF=3.5x10
D.
CH3COO-(KHAc=1.8x10-5)
【简答题】What I like to advise people is to find out what it is that makes them happy. What do you love to do? If you truly love what you do just go ahead and try to make a living by doing it. People will thro...
【单选题】下列阴离子的水溶液,若浓度(单位 )相同,则何者碱性最强?( )
A.
BCN-(KHCN=6.2×10-12)
B.
S2-(KHS-=7.1×10-15, KH2S=1.3×10-7)
C.
F-(KHF=3.5×10-4)
D.
CH3COO-(KHAc=1.8×10-5) E) Cl-(KHCl＞＞1)
【单选题】Is it possible for you to expand business there? ()
A.
I like it.
B.
I'd love to.
C.
Yes,I think so.
【单选题】下列阴离子的水溶液，若物质的量浓度相同，则何者碱性最强（ ）？
A.
CN—（Ka= 4.93×10－10）
B.
S2—（Ka1= 9.1×10—8，Ka2= 1.1×10—12）
C.
F—（Ka= 3.53×10－4）
D.
CH3COO—（Ka= 1.76×10－5）
【简答题】根据问句，找出相应的答语。 Questions: 1. What's your favorite subject? 2. What's his favorite sports? 3. What's her favorite color? 4. Why do you like math? 5. Why does he like P.E.? 6. Why does she like red rose?...
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