试题与答案

粉状外加剂应防止受潮结块，若有结块，则应经性能检验合格后应粉碎至全部通过( )后方

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题型：单项选择题

题目：

粉状外加剂应防止受潮结块，若有结块，则应经性能检验合格后应粉碎至全部通过( )后方可使用。

A．0.48mm筛
B．0.56mm筛
C．0.63mm筛
D．0.68mm筛

答案：

参考答案：C

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