A.屋面細(xì)部構(gòu)造設(shè)計(jì) B.屋面排水設(shè)計(jì) C.屋面構(gòu)造設(shè)計(jì) D.屋面防水設(shè)計(jì)
A.10mm B.20mm C.30mm D.50mm
A.1 B.2 C.3 D.4