A.1250mm;3600mm B.31250mm;3000mm C.3600mm;4000mm D.3000mm;4000mm
A.停車試閘 B.溜放試閘 C.運行試閘 D.牽出試閘
A.分布 B.用途 C.有效長 D.生產(chǎn)進度