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问题 单项选择题

小儿无尿标准为（）

A.每日尿量＜200～300ml

B.每日尿量＜100～150ml

C.每日尿量＜30～50ml

D.每日尿量＜20ml

E.每日尿量为0

答案

参考答案：C

单项选择题

The book, which is a useful guide for today's young people, deals with many questions and problems that face them at school and at home as well as in society.

A．are faced

B．confront

C．in opposition

D．meet
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判断题

100M3通用式机械搅拌发酵罐一般搅拌转速在90-110rpm之间，所用变速装置为无极变速器，以调整搅拌转速。
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