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问题 单项选择题

企业标准化的一般概念中以企业获得最佳秩序和效益为（）。

A.目的

B.对象

C.基础

D.主要内容

答案

参考答案：A

解析：企业标准化的一般概念中以企业获得最佳秩序和效益为目的。

选择题

I just don't understand_____________ that prevents so many Americans from

being as happy as one might expect.

A．why it does

B．what it does

C．what it is

D．why it is
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单项选择题

A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.

A.a gas mask certified by the Mine Safety and Health Administration

B.the same self-contained breathing apparatus required with the fireman's outfit

C.an oxygen breathing apparatus，provided that the device has been inspected within three years

D.a portable ventilation system that will provide a complete change of air every three minutes
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