词汇与结构We have to adjust heading to follow the course due to the existence of ________.
A: magnetic north
B: magnetic influence
C: magnetic variation
D: magnetic difference
A: magnetic north
B: magnetic influence
C: magnetic variation
D: magnetic difference
举一反三
- 词汇与结构 We have to adjust heading to follow the course due to the existence of ________.
- Which magnetic compass corrector（s）CANNOT be set on a heading of magnetic east or magnetic west（）. A: Heeling magnet B: Flinders bar C: Fore-and-aft magnets D: All of the above can be set on magnetic east or magnetic west heading
- If 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 erro
- Isogonic lines are lines on a chart indicating （）. A: points of equal variation B: points of zero variation C: the magnetic latitude D: magnetic di
- Which of the following explains why a magnetic field does no work on a moving charged particle?( ) A: The magnetic force depends on the speed of the particle. B: There is always an electric field that cancels the work done by the magnetic field. C: The magnetic force is always perpendicular to the direction of motion. D: The magnetic force depends on the direction of motion of the particle. E: The magnetic force is conservative.