1-5月标准体系

高危险场所灯具光源应急点亮的响应时间不应大于（）s

发布于 2021-02-22 05:55:31

【单选题】
A 0.25
B 0.5
C 0.75
D 1

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隔壁老樊 2023-02-22

一份耕耘，一份收获，付出就有回报永不遭遇过失败，因我所碰到的都是暂时的挫折。

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