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【单选题】
反应 A+B=C+D 的△ r H m <0 ,当升高温度时将使( )。A.
正反应速率系数和逆反应速率系数都增大
B.
正反应速率系数和逆反应速率系数都减小
C.
正反应速率系数增大；逆反应速率系数减小
D.
正反应速率系数减小；逆反应速率系数增大
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皮皮学刷刷变学霸
举一反三
【单选题】A: You sound like you have a cold. B: ______.
A.
It's just the radio sound.
B.
Yes, I'm sick.
C.
I'll wear your coat.
D.
It's a very cold winter.
【单选题】I don’t want _____ like I’m speaking ill of anybody, but the manager’s plan is unfair．
A.
to sound
B.
to be sounded
C.
sounding
D.
to have sounded
【简答题】电梯司机在轿厢内控制 ,实现电梯的起动、上升、下降、平层、停止的运行状态。
【单选题】Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests. [ ]
A.
since
B.
before
C.
after
D.
when
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