问题 多项选择题

以下关于澄清池的描述,正确的是( )。

A.将絮凝与沉淀两个过程集中在同一个处理构筑物中进行
B.池内进行接触絮凝
C.池中保持了大量矾花
D.出水浊度达到1NTU

答案

参考答案:A,B,C

解析:澄清池的技术特点见《考试教材》第1册第196页。按设计规范设计并正常运行的沉淀池和澄清池,出水浊度一般小于5NTU,只有滤池出水才可满足浊度小于1NTU的要求。

句型转换

句型转换

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2. Lucy said,"I'm going to the beach for vacation. "  

                                                                

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4. Xiao Li asked me,"Can I copy your homework?"  

                                                                

5. Tom asked his father,"Why does the sun rise(升起) in the east and go down in the west?

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6. Alan said he was not lucky enough then.  

                                                                

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8. Dennis said Mary wouldn't go because she was ill.  

                                                                

9. He told me not to do it again.  

                                                                

10. She said her parents weren't going to the party with her the next week.

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单项选择题