問題詳情

24.In practice, cargo hold bilge should be sounded if there is no special instruction.
(A)twice daily
(B)every four hours
(C)two to four times per week
(D)before every departure and arrival

參考答案

答案：A
難度：非常簡單1
統計：A(1),B(0),C(0),D(0),E(0)