题目内容

在一个混合体系中,各组分的摩尔分数都小于1.0,而且所有组分的摩尔分数的总和为1.0。

A. 对
B. 错

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We shouldignorance.

A. fight for
B. fight against
C. fight with
D. fight through

The driver clapped on his brakes when he saw the child, but he failed to stop.

A. at a time
B. all the time
C. on time
D. in time

For years, Chinese billionaires began tomost frequently in Forbes magazine.

A. fight against
B. pull to a stop
C. pop up
D. stop short

Hewhen he heard his name.

A. stopped short
B. stop short
C. popped up
D. pull to a stop

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