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第4章 可燃性・爆発性危険物の消防安全知識3

2016-11-03View Original

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3、自然発火しやすい物質の火災危険性は主に()に表れる。 A 空気に触れると自然発火する B 湿気があると燃えやすい C 燃点が低い D 点火しやすい E 熱が蓄積されて自然発火する性質 答え:ABE

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