大型轴流泵广泛采用（）调节。 A.变速； B.节流； C.可动叶片

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问题单项选择题

大型轴流泵广泛采用（）调节。

A.变速；

B.节流；

C.可动叶片；

D.出口调节。

答案

参考答案：C

单项选择题

国家对房地产开发项目资本金比例的要求是()。

A、15%

B、20%

C、35%

D、40%

选择题

I was shocked ______ the cruelty of Tom, a relative of my wife, who not only shouted ____ the

poor man begging for something to eat but also let his violent dog come _____ him. [ ]

A. at; at; at

B. with; to; at

C. by; to; at

D. for; at; to