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单选题
Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.
A
accurate only in the Polar regions
B
accurate electronic servomechanisms
C
hand operated
D
accurate only if the vessel is underway
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单选题Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are（）.A
accurate only in the Polar regionsB
accurate electronic servomechanismsC
hand operatedD
accurate only if the vessel is underway
考题
单选题Which statement about the gyrocompass is FALSE（）.A
Its accuracy remains the same at all latitudesB
It seeks the true meridianC
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单选题Indications of the master gyrocompass are sent to remote repeaters by the（）.A
follow-up systemB
transmitterC
phantom elementD
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sensitive elementC
link armD
pickup transformer
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单选题The directive force of a gyrocompass（）.A
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precessionB
earth rateC
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gravity effect
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