單項(xiàng)選擇題
A.300mmB.400mmC.500mmD.700mm
A.1520mmB.1720mmC.1920mmD.2120mm
A.50mmB.100mmC.150mmD.200mm
A.送電端B.受電端C.調(diào)諧單元D.絕緣節(jié)
A.700mmB.1000mmC.1900mmD.1100m
A.1555mmB.1775mmC.1995mmD.2195mm
A.2630mmB.1630mmC.1360mmD.2360mm
A.900mmB.1000mmC.1900mmD.1100m
A.50mmB.75mmC.100mmD.150mm
A.12VB.10VC.11VD.9-10V
A.列車B.調(diào)車C.出站D.預(yù)告