A.設(shè)計單位 B.建設(shè)單位 C.建設(shè)總承包單位 D.施工單位
A.100mm,300mm B.150mm,350mm C.200mm,400mm D.200mm,450mm
A.10mm,0.5% B.15mm,0.8% C.20mm,1% D.25mm,2%