单项选择题
At the master gyrocompass，the compass card is attached to the（）.
A.spider element
B.sensitive element
C.link arm
D.pickup transformer
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A.VHF
B.Steering Gear
C.Rudder Indicator
D.Loran -
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A.make
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As a vessel changes course to starboard，the compass card in a magnetic compass（）.
A.remains aligned with compass north
B.also turns to starboard
C.first turns to starboard then counterclockwise to port
D.turns counterclockwise to port
