50. 試問以下的號誌圖片,正確的鐵道號誌名稱為何?
(A)通過號誌機(Passing Signal) (B)閉塞號誌機(Block Signal) (C)出發號誌機(Starting Signal) (D)中轉號誌機(Repeating Signal)
50.試問以下的號誌圖片,正確的鐵道號誌名稱為何? (A)通過號誌機(Passi..-阿摩線上測驗