【毎日一問】工程基礎知識（判断問題）20190730
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可燃物の濃度が爆発限界外であれば、安全です。×
間違ってるよ、絶対にダメだ。爆発限界を超えたら拡散して希釈されたり、燃焼したり、他にも色々あるんだ。どうして安全だなんて言えるの？あれは単に爆発しない濃度範囲であって、安全な範囲じゃない
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