阿摩線上測驗
2. The symbol attached below on the chart means: 
(A) Coral rock, not obstacle to navigation safety
(B) Coral rock, obstacle to navigation safety
(C) Sunk ship, not obstacle to navigation safety
(D) Sunk ship, obstacle to navigation safety
答案：登入後查看
統計： A(0), B(0), C(3), D(2), E(0) #4055130
統計： A(0), B(0), C(3), D(2), E(0) #4055130
