阿摩線上測驗
7. A vessel is seen showing three lights in a vertical line; the top and bottom ones are red and
the middle one is white. What does this night time signals indicate?
(A) It is a dredging ship not engaged in operation.
(B) It is a vessel at anchor.
(C) It is a vessel restricted her ability to manoeuvre.
(D) It is a vessel engaged in a mine clearance operation.
答案：登入後查看
統計： A(0), B(0), C(4), D(0), E(0) #4055215
統計： A(0), B(0), C(4), D(0), E(0) #4055215
