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问题 多项选择题

传统的卷材有（）等三大系列。

A．涂膜防水卷材

B．沥青防水卷材

C．高聚物改性沥青防水卷材

D．合成高分子防水卷材

答案

参考答案：B, C, D

多项选择题

下列属于教态语言特征的是()

A．辅助性

B．连续性

C．表情性

D．情境性
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单项选择题

Computer hardware engineers research, design, develop, and test computer hardware and supervise its manufacture and (73) . Hardware refers to computer (74) , circuit boards, computer systems, and related equipment such as keyboards, modems, and printers.

A．fixing

B．building

C．setting

D．installation
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