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安全出口、疏散通道和楼梯口应当设置符合标准的灯光疏散指示标志。
Safety exits, evacuation routes and stairways shall be provided with light evacuation signs.
youdao
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安全出口、疏散通道和楼梯口应当设置符合标准的灯光疏散指示标志。
Safety exits, evacuation routes and stairways shall be provided with light evacuation signs.
youdao