阿摩線上測驗
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
答案：登入後查看
統計： A(549), B(61), C(64), D(68), E(0) #2334855
統計： A(549), B(61), C(64), D(68), E(0) #2334855
