At the master gyrocompass，the compass

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、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

3、If the compass heading and the magneti

If the compass heading and the magnetic heading are the same then（）.Athe deviation has been offset by the variationBthere is something wrong with the compassCthe compass is being influenced by nearby metalsDthere is no deviation on that heading

4、If the gyrocompass error is east，what

If the gyrocompass error is east，what describes the error and the correction to be made to gyrocompass headings to obtain true headings?（）.AT...

5、Compass error is equal to the（）.

Compass error is equal to the（）.Adeviation minus variationBvariation plus compass courseCcombined variation and deviationDdifference between true and magnetic heading

6、Which statement about the gyrocompass

Which statement about the gyrocompass is FALSE（）.AIts accuracy remains the same at all latitudesBIt seeks the true meridianCIt can be used near the Earth's magnetic polesDIf an error exists，it is the same on all heading