The compass error of a magnetic compass that has no deviation is（）.<br>A:zero<br>B:equal to variation<br>C:eliminated by adjusting the compass<br>D:constant at any geographical location

The compass error of a magnetic compass that has no deviation is（）.
A:zero
B:equal to variation
C:eliminated by adjusting the compass
D:constant at any geographical location

出自：海船船员证

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