题目内容

Our department has a large collection of books()are in English.

A. many of which
B. many of them
C. many ones
D. their many

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评标委员会实行(, )。

A. 回避制度
B. 更换制度
C. 回避更换制度
D. 替换制度

键连接主要用于轴与轴上的旋转零件之间的( )固定。

A. 周向
B. 径向
C. 轴向
D. 任何方向

It is vital that you()quickly to whatever is said.

A. respond
B. responded
C. will respond
D. are responding

Even as a young man Disraeli realized that one day his lettes would be ______.

A. discarded
B. well-connected
C. destroyed
D. widely read

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