A.–93mm B.–120mm C.–150mm D.–200mm
A.進站信號機應(yīng)答器組(JZ) B.出站信號機應(yīng)答器組(CZ) C.進路應(yīng)答器組(JL) D.調(diào)車應(yīng)答器組(DC)
A.線路參數(shù) B.等級轉(zhuǎn)換 C.RBC切換 D.臨時限速