毎日一問。正解者には財富を6個、参加者には財富を2個プレゼント；8月06日
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単選問題：広い空間内で、爆発性を有する気体混合物の初期圧力が十分に低い場合、その爆発性気体に点火すると、（）という現象が起こる。A．爆発 B．燃焼 C．着火 D．非爆発 答え：D．非爆発
広い空間内で、爆発性を有する気体混合物の初期圧力が十分に低い場合、爆発性気体に点火すると、（B）現象が起こる。 A．爆発 B．燃焼 C．着火 D．非爆発
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