問題詳情
32. If no crew was changed within last four months, the ISPS drills should be conducted_____.
(A) at least once
(B) at least once within last six month
(C) at least once in a year
(D) twice within eighteen months
參考答案
答案：A
難度：適中0.62069
統計：A(18),B(6),C(2),D(1),E(0)