問題詳情

40. ______ are the correctors for the magnetic compass that can beused to remedy the the deviation caused by the induced B coefficient.
(A) Vertical permanent heeling magnets
(B) Athwartship C permanent magnets
(C) Soft-iron quadrantal spheres
(D) Vertical soft-iron Flinders bar

參考答案

答案:D
難度:困難0.266667
統計:A(6),B(2),C(2),D(4),E(0)

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