問題詳情
7. Compass error should be checked regularly as per industry requirements. How oftencompass error to be checked during voyage?
(A) At least once a watch.
(B) At least twice a watch.
(C) At least twice a day.
(D) At least once a day.
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)