In the event of a fire, wear full protective clothing and NIOSH-approved self-contained breathing apparatus with full facepiece operated in the pressure demand or other positive pressure mode.
如果发生火灾,请在

压力下,穿保护衣和
立职业安全与健康
所批准
呼吸器械和口罩。
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CNN 10 学生英语 2020
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