The Flinders bar on a magnetic compass compensates for the（）.<br>A:induced magnetism in vertical soft iron<br>B:induced magnetism in horizontal soft iron<br>C:permanent magnetism in ship's steel<br>D:vessel's inclination from the vertical

The Flinders bar on a magnetic compass compensates for the（）.
A:induced magnetism in vertical soft iron
B:induced magnetism in horizontal soft iron
C:permanent magnetism in ship's steel
D:vessel's inclination from the vertical

出自：海船船员证

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