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根据原生动物和微型后生动物的演替,钟虫等固着型纤毛虫、檐纤虫、轮虫出现,可判断活性污泥培养成熟程度为( )。

A、活性污泥培养初期 

B、活性污泥培养中期

C、活性污泥培养对数期 

D、活性污泥培养成熟期 

时间：2021-09-01 16:46 关键词：青书学堂平顶山学院环境生态工程环境监测(专升本)

答案解析

D

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