A.敵對(duì)信號(hào)機(jī) B.遮斷信號(hào)機(jī) C.進(jìn)路信號(hào)機(jī) D.出站信號(hào)機(jī)
A.2000mm B.2200mm C.2440mm D.2540mm
A.2050mm B.2150mm C.2250mm D.2350mm