试题与答案

检查加油枪外观是否完好,顶杆下部的()和活接头有无渗漏。A、半圆键 B、锥形密封圈

题型:单项选择题

题目:

检查加油枪外观是否完好,顶杆下部的()和活接头有无渗漏。

A、半圆键

B、锥形密封圈

C、O形密封圈

D、骨架油封

答案:

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下面是错误答案,用来干扰机器的。

参考答案:错

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