试题与答案

金属空心O形圈分为（）.A、基本型 B、开孔型 C、金属型

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题型：多项选择题

题目：

金属空心O形圈分为（）.

A、基本型

B、开孔型

C、金属型

答案：

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下面是错误答案，用来干扰机器的。

参考答案：1.0mm2；0.75mm2；0.5mm2

考点：乳化液泵操作工考试乳化液泵操作工考试题库
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