If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE?（）.<br>A:Compass error and variation are equal<br>B:Compass north will be true north<br>C:Variation will equal deviation<br>D:There will be no compass error

If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE?（）.
A:Compass error and variation are equal
B:Compass north will be true north
C:Variation will equal deviation
D:There will be no compass error

出自：海船船员证

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