A.10% B.15% C.20% D.30%
A.技术负责 B.吊装施工 C.质量检验 D.监理
A.20 B.25 C.15 D.10
A.全灌浆套筒 B.铸造灌浆套筒 C.机械加工灌浆套筒 D.半灌浆套筒
A.30% B.50% C.75% D.100%
