试题与答案

用于幕墙中的石材,下列规定哪一条是错误的() A.石材宜选用火成岩,石材吸水率应小于

题型:单项选择题

题目:

用于幕墙中的石材,下列规定哪一条是错误的()

A.石材宜选用火成岩,石材吸水率应小于0.8%

B.石材中的含放射性物质应符合行业标准的规定

C.石板的弯曲强度不应小于8.0MPa

D.石板的厚度不应小于20mm

答案:

参考答案:D

解析:

同上。

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