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【单选题】
298 K 时 , 反应为 Zn(s) + Fe 2+ (aq) = Zn 2+ (aq) + Fe(s) 的电池的标准电动势为 0.323 V, 则其平衡常数 为A.
2.89×10 5
B.
8.46×10 10
C.
5.53×10 4
D.
2.35×10 2
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举一反三
【简答题】失眠(insomnia)
【单选题】Insomnia can be traced to many different reasons, but what is_____(23)to many sufferers is their inability to relax fully and 'switch the mind_____(24)'.
A.
on
B.
off
C.
up
D.
down
【单选题】Can you suggest me something I can take to ______ my insomnia?
A.
relieve
B.
strengthen
C.
lift
【单选题】Which type of insomnia is regarded as the cause of jet lag?
A.
Organic insomnia.
B.
Chronic insomnia.
C.
Acute insomnia.
D.
Transient insomnia.
【简答题】岩石比面是指单位体积岩石内,骨架的 。
【简答题】抽样的类型主要分为( )和( )两大类。
【单选题】Which type of insomnia is regarded as the most serious?
A.
Organic insomnia.
B.
Chronic insomnia.
C.
Acute insomnia.
D.
Transient insomnia.
相关题目：
【单选题】Can you suggest me something I can take to ______ my insomnia?
A.
relieve
B.
strengthen
C.
lift