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【单选题】
萃取因数代表了哪些因素对完全不互溶物系萃取过程的影响？（）A.
溶剂比和相平衡关系；
B.
溶剂比、相平衡关系和操作压力；
C.
溶剂比、相平衡关系和萃取剂组成
D.
以上说法均不正 确。
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反馈参考答案：
举一反三
【简答题】In many cases, hard work alone does not necessarily lead to success.
【简答题】A.To be sure B.To sum up C.In many ways D.In many cases
【单选题】听力原文：There are not enough cases for so many suits, so we have to rearrange those cases. We can fit one more suit into the case, can't we? (26)
A.
This case can hold more suits than that one.
B.
We can't find the other case of suits.
C.
Can this case fit in with the others?
D.
Can't we put another suit into the case?
【单选题】In many cases, identity theft not only causes the victims' immediate financial losses but costs them a lot to restore their reputation.
A.
Y
B.
N
C.
NG
【单选题】In many cases, without delivery confirmation, the sender knows that something was sent, but there is no confirmation ___ whether was received or when it was received.
A.
in terms of
B.
as to
C.
in this regard
【简答题】In many cases, the internally displaced are virtually those who are ______.
【单选题】Attention is called to the fact that in many cases pipelines are not ______ and charted depths may be decreased by up to 2 meters．
A.
concealed
B.
buried
C.
existed
D.
built
【单选题】Attention is called to the fact that in many cases pipelines are not buried and charted depths may be decreased ______ up to 2 meters.
A.
with
B.
by
C.
on
D.
In
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