15. 摩斯碼為「－．－－」，其字母是：(A) Q(B) Y(C) Z(D) J

1. A: Chief officer, I have been informed that the floating crane will arrive at the ship’s side tomorrow morning. B: That’s good. You will see to it that no trouble arises in working with the floating crane, I hope. Question: What is the function of a floating crane? (A) Cargo lifting (B) Vessel towage (C) Fire fighting (D) Lifesaving