A.Flinders bar should be inverted
B.Heeling magnet should be inverted
C.The quadrantal spheres should be rotated 180°
D.Flinders bar should be moved to the opposite side of the binnacle
您可能感興趣的試卷
你可能感興趣的試題
A.Flinders bar
B.Soft iron spheres
C.Fore-and-aft permanent magnets in their trays
D.Heeling magnet
A.Magnetic materials of the same polarity repel each other and those of opposite polarity attract
B.The Earth's magnetic lines of force are parallel to the surface of the Earth
C.Magnetic meridians connect points of equal magnetic variation
D.The compass needle（s）will，when properly compensated，lie parallel to the isogonic lines of the Earth
A.Worn gears in the compass housing
B.Magnetism from the earth's magnetic field
C.Magnetism within the vessel
D.Lack of oil in the compass bearings
A.will add to
B.will subtract from
C.may add to or subtract from
D.will not change
A.an annual
B.a constant
C.a variable
D.an unstable
最新試題
The line which connects the points of zero magnetic dip is（）.
What are the only magnetic compass correctors that correct for both permanent and induced effects of magnetism?（）
Any piece of metal on becoming magnetized will develop regions of concentrated magnetism called（）.
When changing from a compass course to a true course you should apply（）.
When relieving the helm，the new helmsman should know the（）.
What is an advantage of the magnetic compass aboard vessels?（）
The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.
When a vessel changes course from one cardinal heading to another cardinal heading whilea djusting the compass，which action should be taken?（）
Which magnetic compass corrector（s）can be set while the vessel is on a heading of magnetic north or magnetic south（）.
While in drydock your vessel will be belt-gauged.This process involves（）.