- 搜標題
- 搜題干
- 搜選項
單項選擇題
耐火等級為二級時，樓板和吊頂?shù)哪突饦O限應(yīng)分別滿足[]
A.1.50h，0.25h
B.1.00h，0.25h
C.1.50h，0.15h
D.1.00h，0.15h
B.1.00h，0.25h
C.1.50h，0.15h
D.1.00h，0.15h
