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【单选题】
下列关于中处理工艺的叙述中错误的是( )A.
以洗浴排水为原水的中水系统，在污水泵吸水管上应设置毛发过滤器
B.
生活污水作为中水水源适应经过化粪池的处理
C.
厨房排水应经过沉淀处理后方可进入中水原水系统
D.
当中水处理产生的污泥量较小时，可排至化粪池处理
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【简答题】______are produced by constricting or obstructing the vocal tract at some place to divert, impede, or completely shut off the flow of air in the oral cavity.
【单选题】Some so-called climate travelers _______ in one place for a few months and then move on to some other places as the weather changes.
A.
have stayed
B.
are staying
C.
stay
D.
stayed
【单选题】传染病监测的主要内容不包括（）。
A.
人口学资料
B.
病原体型别、毒力、抗药性变异情况
C.
人群免疫水平的测定
D.
疫情预测
E.
人群生活方式和行为危险因素监测
【单选题】In some countries (societies) , is considered an unsuitable place for business entertaining.
A.
a hotel
B.
an office
C.
home
D.
a company
【单选题】Why do some birds vary from place to place in their song repertoires of according to DK?
A.
It comes about perhaps because of the change of their DNA.
B.
It comes about simply due to imitation of the other birds' manner.
C.
Because the birds have learned the local dialect by learning the loca} dialect from generation to generation.
D.
Both A and C
【单选题】Why do some birds vary from place to place in their song repertoires of according to DK?
A.
It comes about perhaps because of the change of their DNA.
B.
It comes about simply due to imitation of the other birds' manner.
C.
Because the birds have learned the local dialect by learning the local dialect from generation to generation.
D.
Both A and
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