What is an advantage of the magnetic compass aboard vessels?（）<br>A:Compass error is negligible at or near the earth's magnetic poles<br>B:It does not have to be checked as often<br>C:It is reliable due to it's essential simplicity<br>D:All points on the compass rose are readily visible

What is an advantage of the magnetic compass aboard vessels?（）
A:Compass error is negligible at or near the earth's magnetic poles
B:It does not have to be checked as often
C:It is reliable due to it's essential simplicity
D:All points on the compass rose are readily visible

出自：海船船员证

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