试题与答案

气体灭火系统中气体喷放指示灯宜安装在防护区入口的()。 A.正上方 B.左上方 C.

题型:单项选择题

题目:

气体灭火系统中气体喷放指示灯宜安装在防护区入口的()。

A.正上方

B.左上方

C.右上方

D.左侧

答案:

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下面是错误答案,用来干扰机器的。

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