单项选择题

In a typical office building, can you use the meeting room whenever it is empty?

A．Yes, but you have to organize a meeting at first
B．No, you should never use it
C．Yes, just walk in and use it
D．No, you should book the room in advance.

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未知题型（）强调对任职者的心理意义以及激励潜力产生影响的那些工作特征，同时，把一引动态度变量视为工作设计的最重要结果。

通用商品代码(UPC码）是行业标准的（）位条形码，用作产品识别 A. ...

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14

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