Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.<br>A:Heeling magnet<br>B:Flinders bar<br>C:Fore-and-aft magnets<br>D:All of the above can be set on magnetic east or magnetic west headings

Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）.
A:Heeling magnet
B:Flinders bar
C:Fore-and-aft magnets
D:All of the above can be set on magnetic east or magnetic west headings

出自：海船船员证

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