火灾安全逃生小知识课件

2026-07-28 网络整理佚名1420

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Key Point:火灾安全逃生小知识第一章火灾基础知识火灾的三要素高温或着火源明火电火花高温物体等能够引燃可燃物的热源氧气空气中的氧气是燃烧反应持续进行的必要条件可燃物纸张木材纺织品化学品等能够燃烧

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