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【多选题】
火灾事故中造成人员伤亡的主要原因是？（）A.
火场内可燃物产生的烟雾
B.
部分可燃物燃烧产生的有毒气体
C.
燃烧引发的爆炸
D.
可燃物燃烧造成火场内极高的温度
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A.
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B.
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C.
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D.
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