問題詳情
56 A vessel engaged in laying, servicing or picking up a navigation mark, submarine cable, or pipe line shall
be regarded as a vessel _____.
(A)underway
(B)restricted in her ability to maneuver
(C)not under command
(D)under sail
參考答案
答案：B
統計：A:1,B:2,C:1,D:1,E:0
難度：計算中