A.不燃性2.00,不燃性1.50B.不燃性2.00,不燃性1.00C.不燃性1.50,不燃性1.00D.不燃性1.50,不燃性0.50
A.不燃性2.00h,不燃性1.50hB.不燃性2.00h,不燃性1.00hC.不燃性3.00h,不燃性2.50hD.不燃性3.00h,不燃性2.00h
A.楼板B.梁C.柱D.非承重外墙