A.[牽引變流器送風1]B.[牽引變流器送風2]C.[牽引變流器1]D.[牽引變流器2]
A.20km/hB.30km/hC.40km/hD.80km/h
A.軸溫實時檢測B.光傳輸狀態(tài)C.設(shè)備切除D.供電分類