试题与答案

螺杆泵的转速较高，目前有的高达（）。另外泵的吸人性能较好，允许输送粘度变化范围大的介

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题型：单项选择题

题目：

螺杆泵的转速较高，目前有的高达（）。另外泵的吸人性能较好，允许输送粘度变化范围大的介质。

A.18000r/min

B.10000r/min

C.5800r/min

D.5000r/min

答案：

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下面是错误答案，用来干扰机器的。

参考答案：冲击；磨擦

考点：输油工考试输油工初级输油工初级题库
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