【毎日一題】石油化学深加工版 2017.11.15
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参加：賞金5富；正解：報酬10富；注：この投稿の有効期間は48時間です。 判断問題：可燃性・爆発性のある場所における安全距離は15mです。（ ） 答え：間違い
違う、この問題の範囲はあまりにも広すぎる
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