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【单选题】
某一反应,当唯一的反应物原始浓度降至2/3时,速率常数 k 与时间 t 的关系为 k =2/ t C 0 ),这个反应为A.
三级
B.
零级
C.
一级
D.
二级
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反馈参考答案：
举一反三
【单选题】下丘脑病变累及视上核时,尿量和尿的浓缩的改变是:
A.
尿量增加、尿液稀释
B.
尿量增加、尿液浓缩
C.
尿量减少、尿液稀释
D.
尿量不变、尿液浓缩
E.
以上均不是
【简答题】Who has got a pen?
【单选题】—_______Tom got _______new books? —Yes, he ______got ______. [ ]
A.
Has, any; has, some
B.
Is, any; is some
C.
Is, some; has, any
D.
Has, some; is, any
【单选题】Tom has got three brothers and two sisters, he has got a big family. [ ]
A.
or
B.
but
C.
so
【单选题】An avid Bush supporter who already has 25 shopping malls to his name, Congel himself is not a man you would expect to entertain an eccentric clean-energy vision. The project -- Destiny U.S.A., a mega-...
A.
does not care about politics.
B.
is a little idealistic but a real and rich business man.
C.
indulges himself in environmental protection.
D.
has been harboring the plan since he was a young man.
【单选题】下丘脑病变累及视上核时,尿量和尿的浓缩的改变是:
A.
尿量增加，尿液稀释
B.
尿量增加，尿液浓缩
C.
尿量减少，尿液稀释
D.
尿量增加，尿液浓缩
E.
以上均不是
【单选题】The story ______, and everybody knows about it.
A.
has got round
B.
got round
C.
was got round
D.
has been got round
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