阿摩線上測驗
18. If you want to request a pilot onboard the ship, which of the following 「single letter」 shall be chosen and sent by any method of signaling ? The single letter is:
(A) A
(B) D
(C) G
(D) Z
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統計： A(0), B(0), C(1), D(0), E(0) #4054251
統計： A(0), B(0), C(1), D(0), E(0) #4054251
