未分类题

环境污染物的自净作用受哪些因素的影响(    )
   A．环境结构    B．环境状态
   C．污染物性质    D．污染物种类
   E．污染物数量

A.环境结构
B.环境状态

C.污染物性质
D.污染物种类


【参考答案】

ABCDE
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