north magnetic pole
south magnetic pole
magnetic prime vertical meridian
magnetic equator
第1题：
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south ________．
A.Quadrantal spheres
B.Heeling magnets
C.Flinders bar
D.Fore-and-aft magnets
第2题：
If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.
A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error
第3题：
Which one of the followings is incorrect about magnetic compass?______.
A.The magentic compass is compulsory on my vessel
B.The magentic compass is prone to error
C.The magentic compass is always placed inside steel constructions
D.The magentic compass needs to be calibrated to compensate for local magnetic distortion
第4题：
Compass error and variation are equal
Compass north will be true north
Variation will equal deviation
There will be no compass error
第5题：
Magnetic heading differs from compass heading by______．
A.compass error
B.true heading
C.variation
D.Deviation
第6题：
Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
第7题：
Magnetic compass deviation______．
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
第8题：
A vessel is heading magnetic north and its magnetic compass indicates a heading of 003°. What action should be taken to remove this error during compass adjustment?
A.Move the quadrantal spheres closer to the compass
B.Raise the heeling magnet if the red end is up
C.Remove some of the Flinders bar
D.Raise or lower the athwartship magnets
第9题：
Magnetic dip is a measurement of the angle between the ______.
A.geographic pole and the magnetic pole
B.lubber’s line and true north
C.horizontal and the magnetic line of force
D.compass heading and the magnetic heading
第10题：
use the magnets one at a time，putting one in one side and then one on the opposite side，one step higher
use the magnets in pairs，starting at the top，with trays at the highest point of travel
use the magnets in pairs，from the bottom up，with the trays at the lowest point of travel
fill all the trays with magnets，then remove them one-by-one until the deviation is removed