试题与答案

用500g于砂做筛分试验，其累计筛余百分率为：A1=5.5%，A2=13.9%，A3

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题型：问答题

题目：

用500g于砂做筛分试验，其累计筛余百分率为：
A1=5.5%，A2=13.9%，A3-23.3%，A4=61.6%，A5=82.1%，A6=98.5%
试计算：细度模数是多少是粗砂还是细砂？

答案：

参考答案：

该砂的细度模数为2.67，属中砂。

考点：抹灰工中级抹灰工中级
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题型：阅读理解

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