問題詳情
9.A buoyage system generally used to indicate dangers where the coast is flanked by numerousislands, rocks, and shoals as well as to indicate dangers in open sea defines ___________ .
(A)IALA system
(B)cardinal system
(C)lateral mark system
(D)traffic separation system
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增