混凝土天然骨料加工以( )为主。A.破碎和清洗 B.破碎和筛分C.筛分和清洗 D.筛分和堆放

作者: rantiku 人气: - 评论: 0
问题 混凝土天然骨料加工以( )为主。
选项 A.破碎和清洗 B.破碎和筛分 C.筛分和清洗 D.筛分和堆放
答案 C
解析 天然骨料加工以筛行和清洗为主,人工骨料加工以破碎、筛分为主。

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