A、the lines of force cross the equator on a 0°-180°alignment
B、the quadrantal error is 0°
C、there is no vertical component of the Earth's magnetic field
D、the intercardinal headings have less than 1°
更多“At the magnetic equator there is no induced magnetism in the vertical soft iron because（）.”相关的问题
A、use the magnets one at a time，putting one in one side and then one on the opposite side，one step higher B、use the magnets in pairs，starting at the top，with trays at the highest point of travel C、use the magnets in pairs，from the bottom up，with the trays at the lowest point of travel D、fill all the trays with magnets，then remove them one-by-one until the deviation is removed
A、If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets. B、If the blue ends of the magnets are aft you should lower the fore-and-aft tray C、If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets D、If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnets
A、north magnetic pole B、south magnetic pole C、magnetic prime vertical meridian D、magnetic equator
A、A.If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should add some magnets B、B.If the blue ends of the magnets are aft you should lower the fore-and-aft tray C、C.If the blue ends of the magnets are aft，and the fore-and-aft tray is at the top，you should reverse the magnets D、D.If the blue ends of the magnets are forward，and the fore-and-aft tray is at the bottom，you should add some magnets
A、Flinders bar first，then the heeling magnet and spheres B、Heeling magnet first，then the Flinders bar and spheres C、Flinders bar first，then the spheres and heeling magnet D、Spheres first，then the Flinders bar and heeling magnet
A、number of turns of wire in the armature coil B、number of magnetic poles C、strength of the magnets used D、output voltage
A、increases with latitude，being maximum at the geographic poles B、decreases with latitude，being maximum at the geographic equator C、is greatest when a vessel is near the Earth's magnetic equator D、remains the same at all latitudes
A、induced magnetism in the vessel's horizontal soft iron B、change in the magnetic field when the vessel inclines from vertical C、permanent magnetism of the vessel D、magnetic fields caused by electrical currents in the vicinity
A、A.They are not subject to permanent magnetism; no check is necessary B、B.Semiannually C、C.Annually D、D.Every five years
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