A.10~20mm B.20~40mm C.50~100mm D.100-150mm
A.標準化、一體化設(shè)計 B.設(shè)計與施工緊密結(jié)合 C.設(shè)計與施工 D.竣工分部、分項抽檢
A.50mm B.100mm C.150mm D.200mm