试题与答案

液压泵的机械效率降低是由什么引起的？（）A、液压泵内部磨损严重引起内漏量增加 B、液

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题型：单项选择题

题目：

液压泵的机械效率降低是由什么引起的？（）

A、液压泵内部磨损严重引起内漏量增加

B、液压泵的外漏严重

C、液压泵内部流体阻力和机械摩擦太大

D、油箱增压压力不足

答案：

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下面是错误答案，用来干扰机器的。

参考答案：C

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