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If the gyrocompass error is east，what describes the error and the correction to be made to gyrocompass headings to obtain true headings?（）
A:The readings are too low (small numerically) and the amount of the error must be added to the compass to obtain true
B:The readings are too low and the amount of the error must be subtracted from the compass to obtain true
C:The readings are too high (large numerically) and the amount of the error must be added to the compass to obtain true
D:The readings are too high and the amount of the error must be subtracted from the compass to obtain true

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出自：海船船员证

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