试题与答案

天然骨料加工以( )为主。 A.筛分、清洗 B.破碎、筛分 C.开采、清洗 D

题型:单项选择题

题目:

天然骨料加工以( )为主。

A.筛分、清洗
B.破碎、筛分
C.开采、清洗
D.开采、筛分

答案:

参考答案:A

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