A.SDP B.SDU C.VDX D.VC E.MSU
A.軌道電路 B.點(diǎn)式應(yīng)答器 C.車(chē)地一體化設(shè)計(jì)的列車(chē)運(yùn)行控制系統(tǒng) D.GSM-R
A.200m B.300m C.45s D.60s