A.DG1長(zhǎng)度 B.DG1+DG長(zhǎng)度 C.DG1+DG區(qū)段尖軌尖端至絕緣節(jié)的長(zhǎng)度 D.DG長(zhǎng)度
A.0~230mA B.0~110mA C.0~56mA D.0~46mA
A.0.06Ω B.0.15Ω C.0.45Ω D.0.5Ω