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消防安全試験問題

2016-12-15View Original

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この投稿は、2016年12月15日11時06分にfight3558586によって最終的に編集されました。『建築材料及び製品の燃焼性能の分類』GB8624-2012によると、建築材料及び製品の性能等級を示すGB624B1(B-S1, d0, t1)において、t1は()等級を意味します。A 煙の毒性;B燃焼滴下物/粒子;Cの発煙特性;D燃焼持続時間;

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