（）the repeater compass with the master

1、The magnetic compass magnets are acted

The magnetic compass magnets are acted on by the horizontal component of the Earth’s total magnetic force. This magnetic force is GREATEST at the（）.Anorth magnetic poleBsouth magnetic poleCmagnetic prime vertical meridianDmagnetic equator

2、When using the lifeboat compass，you mu

When using the lifeboat compass，you must be careful to（）.Aset it on the centerline of the boatBapply the correction for compass errorCkeep metal objects away from itDAll of the above

3、The error in a magnetic compass caused

The error in a magnetic compass caused by the vessel’s magnetism is called（）.AvariationBdeviationCcompass errorDbearing error

4、The magnetic compass operates on the p

The magnetic compass operates on the principle that（）.Alike magnetic poles attractBunlike magnetic poles repelCunlike poles attractDthe poles of the compass line up with the geographic poles of the earth

5、What are the only magnetic compass cor

What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）AQuadrantal spheresBHeeling magnetsCAthwartships magnetsDFore-and-aft magnet

6、At the master gyrocompass，the compass

At the master gyrocompass，the compass card is attached to the（）.Aspider elementBsensitive elementClink armDpickup transformer