A.承載索 B.回空索 C.牽引索 D.起重索
A.The Development and Design of Strop Ropeway B.The Development and Design of Passenger Ropeway C.Surveying and Designing of Cableway D.Installation and Management of Cableway
A.YJ3型絞盤(pán)機(jī) B.QJ-11輕型絞盤(pán)機(jī) C.SJ-23型絞盤(pán)機(jī) D.閩林821型絞盤(pán)機(jī)
A.15m B.20m C.25m D.30m
A.100~300 B.100~200 C.150~300 D.200~300