The Complete Book of 100,000 Reasons Why
Favlit. ten thousand reasons why
为什么防火门常闭？
简单的摘要：防火门常闭的原因主要是为了防止火势蔓延、保障人员疏散以及符合消防安全规定。
1、防火门常闭可以有效地阻止火灾发生时的烟雾和火焰蔓延到其他区域，从而为人员疏散争取宝贵的时间，并控制火势扩大。
2、在发生火灾时，人们需要迅速撤离到安全区域，常闭的防火门可以确保逃生路线的畅通，避免因门未关闭而导致的火势蔓延，保障人员安全疏散。
3、根据消防安全法规，特定场所的防火门必须保持常闭状态，这是为了在火灾发生时，防火门能够自动关闭，起到防火分隔的作用，防止火势蔓延到楼梯间或其他防火分区。
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