問題詳情
25. The horizontal B and C components of ______ magnetism cause variousdeviations of the magnetic compass when the ship swings in heading on an even keel.Plotting such deviations against compass heading yields the sine and cosine curves.
(A) induced
(B) temporary
(C) permanent
(D) transient
參考答案
答案：C
難度：困難0.324324
統計：A(8),B(6),C(12),D(6),E(0)