题目：
原水不经沉淀而直接进人滤池过程称直接过滤，直接过滤有两种方式，分别是（）。
A.絮凝过滤和絮集过滤
B.接触过滤和微絮凝过滤
C.微絮凝过滤和粘附过滤
D.接触过滤和絮集过滤
答案：
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参考答案：对
原水不经沉淀而直接进人滤池过程称直接过滤，直接过滤有两种方式，分别是（）。 A.絮凝
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