A.4t B.3t C.2t D.1t
A.結(jié)構(gòu)復(fù)雜 B.索系簡單 C.不能增力 D.不用止動器
A.Engineering Ropeway B.Cable and Rigging C.Cableway Yarders D.Carriages and Affiliated Equipments of Cableway
