20. A dangerous wreck in the position of 52°12’ North and 112°36’ East is marked by a ______ to
indicate the direction of safety water.
(A) cardinal buoy
(B) light boat
(C) superbuoy
(D) derelict vessel
詳解 (共 3 筆)
未解鎖
cardinal buoy 基點浮標 標...
未解鎖
不要用google翻譯Cardinal ...
未解鎖
(A) cardinal buoy:方...