阿摩線上測驗
2. At sea, which of the following options shall be chosen, and the 「single letter」may also be used as a sound signal to mean: I require a pilot.
(A) C
(B) G
(C) H
(D) P
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統計： A(3), B(549), C(92), D(56), E(0) #2929005
統計： A(3), B(549), C(92), D(56), E(0) #2929005