A.承載索<3.5、工作索<3.5 B.承載索<1.5、工作索<2.5 C.承載索≥2.5、工作索≥3.5 D.承載索≥2.5、工作索≥2.5
A.增大 B.減少 C.不變 D.不確定
A.The Development and Design of Strop Ropeway B.Basic Theory of Suspension Cable C.Surveying and Designing of Cableway D.Installation and Management of Cableway