单选题The quadrantal spheres are used to（）.ARemove deviation on the intercardinal headingsBRemove deviation on the cardinal compass headingsCRemove heeling errorDCompensate for induced magnetism in vertical soft iron
单选题
The quadrantal spheres are used to（）.
A
Remove deviation on the intercardinal headings
B
Remove deviation on the cardinal compass headings
C
Remove heeling error
D
Compensate for induced magnetism in vertical soft iron
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