单项选择题
A.污水管、热力管网、电缆 B.热力管网、污水管、电缆 C.电缆、热力管网、污水管 D.污水管、电缆、热力网
A.4%~3% B.3%~2% C.2%~1% D.1%
A.舒乐舍板墙 B.加气混凝土砌块墙 C.烧结多孔砖墙 D.轻钢龙骨石膏板墙