水中细菌,有机物和还原性物质,氯化消毒时所消耗的氯量为?()A.加氯量B.有效氯C.需氯量D.余氯量E.以上都不是

作者: rantiku 人气: - 评论: 0
问题 水中细菌,有机物和还原性物质,氯化消毒时所消耗的氯量为?()
选项 A.加氯量 B.有效氯 C.需氯量 D.余氯量 E.以上都不是
答案 D
解析

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