A.單邊和雙邊供電B.單邊和越區(qū)供電C.雙邊和越區(qū)供電D.越區(qū)供電
A.柔性架空式接觸網(wǎng)B.剛性架空式接觸網(wǎng)C.接觸軌式接觸網(wǎng)D.跨座式單軌接觸網(wǎng)
A.250mB.90mC.150mD.75m