[单选题]( )不是使往复泵实际流量小于理论流量的原因。

正确答案 ：D

部分液体被排到排出空气室中

[单选题]Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?

正确答案 ：A

Corrosion and eventual failure of the tank

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