單項選擇題

A.making a structural change to the vessel
B.a short circuit near the compass
C.belt buckles
D.All of the above

你可能感興趣的試題

A.accurate only in the Polar regions
B.accurate electronic servomechanisms
C.hand operated
D.accurate only if the vessel is underway

A.Magnetic compass table
B.Magnetic meridians
C.Isogonic lines
D.Variation is not indicated on small-scale nautical charts

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