A.1400mm B.2000mm C.2440mm D.4880mm
A.24.96m短轨 B.24.92m短轨 C.24.88m短轨 D.24.84m短轨
A.95mm B.90mm C.85mm D.80mm
A.1块 B.2块 C.3块 D.4块
A.10km/h B.15km/h C.20km/h D.25km/h
