试题与答案

吹扫和置换煤气设施内部的煤气，最可靠的介质是（）。A、氮气B、氢气C、空气

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题型：单项选择题

题目：

吹扫和置换煤气设施内部的煤气，最可靠的介质是（）。

A、氮气

B、氢气

C、空气

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A, D

考点：材料能源行业技能考试煤气站煤气操作考试煤气站煤气操作考试题库
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