题目内容

例11-1中带形基础清单所包括的定额项目如图1所示，其中1.01的系数是在5-1-4定额中查到的。（）

A. 对
B. 错

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(2018多选)win7资源管理器中,如果要选定某个文件类中的所有文件的或文件夹,可以()。

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