A.100m B.50m C.70m D.110m
A.80m B.110m C.100m D.55m
A.加速坡、平臺、溜放坡 B.溜放坡、壓鉤坡、平臺 C.加速坡、壓鉤坡、中間坡 D.加速坡、中間坡、道岔區(qū)坡