题目内容
活性污泥在曝气过程中对有机物的降解可分为（）和（）两个阶段。
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通常使用（）和（）来表示活性污泥的沉降性能。
由于活性污泥具有巨大的表面积，可以吸附大量的有机物，因此吸附时间较长。
处于对数增长期的活性污泥降解有机物能力强，絮凝性好。
[音频]Pros•Students are easier to________•Students became more______about their new environment•Students__________and a sense of__________to the school can be cultivatedandI made a lot of—_________already.•It’sa__________that reaches beyond character building.We join military training to__________________,andI would feel a bit____________without itCons•Itdoes little to improve students’__________over only two weeks.•Some disaster prevention training, such as __________ survival or escaping from________would be of greater benefit.•Girls are reluctant to train under direct___________•Itis physically _________ and even damages my health.•The effect is not _______. “Such goals require long-term cultivation and it is _________ to expect military training to make a difference in only 14 days.”
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