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问题 单项选择题

已知某钢材试件拉断后标距部分长度为300mm，原标距长度为200mm，则该试件伸长率为（）。

A.150％

B.50％

C.66.7％

D.33.3％

答案

参考答案：B

单项选择题

从警察起源上看，( )

A．原始社会有警察

B．警察是一个历史范畴

C．警察是先于国家的产生而产生的

D．警察先于阶级的产生而
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单项选择题

In Britan, a building society or bank are the official owners and the mortgage is a financial loan for anything that goes up to 100% of the value of the house, repayable over twenty to forty years.

A. that is to 100% of the value of
B. up to 100% of the value of
C. which is up 100% of the value to
D. going up to 100% of the value to
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