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【单选题】
某污水厂采用活性污泥法,处理水量Q=60000m3/d,进水BOD5=160mg/L,池内MLVSS=2400mg/L,f=0.75,污泥负荷Ns=0.3kgBOD5/(kgMLSS·d),曝气池容积V是多少( )m3 。A.
9000
B.
10000
C.
11000
D.
12000
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【单选题】Banks prefer to give a loan to those who ______.
A.
are in need of start-up capital
B.
have the ability to pay it back
C.
own an old and large business
D.
haven't borrowed money before
【简答题】色灯信号机日常养护作业内容包括( )、( )、( )和( )四项内容。
【简答题】-----Where are the children? Professor Zhang has come and his speech will start soon. ------I wish they always late. A. hadn’t been C. wouldn’t be D. wouldn’t have been D. weren’t
【简答题】What are the three three different ways?
【简答题】What are the three main groups of NGOs divided by the World Bank?
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