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第2編 建築の防火 第3章 建築の分類と耐火等級1

2016-11-04View Original

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1、「建築設計防火規範」によると、防火壁の耐火限界は()時間以上でなければならない。A 0.5 B 1 C 2 D 3 答え:D

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