The points on the earth’s surface where the magnetic dip is 90° are().
- AAlong the magnetic equator
- BConnected by the isoclinal line
- CThe isopors
- DThe magnetic pole
The points on the earth’s surface where the magnetic dip is 90° are().
1、The vertical component of the Earth’s
The vertical component of the Earth’s magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. What corrects ...
2、A plane that cuts the Earth’s surface
A plane that cuts the Earth’s surface and passes through the poles will always form().Athe equatorBa loxodromic curveCa small circleDa meridia
3、()means the curve on the earth’s surfa
()means the curve on the earth’s surface which cuts all the meridians at the same angle.AGreat CircleBPosition LineCRhumb lineDTrue Bearing
4、The six points of the People.s Charter
The six points of the People.s Charter were achieved gradually over the period of()although the sixth has never been practical.A1836-1848B1842-1848C1848-1908D1858-1918
5、A line on the Earth parallel to the eq
A line on the Earth parallel to the equator is a().Agnomonic curveBsmall circleCmeridianDgreat circle
6、A plane that cuts the Earth’s surface
A plane that cuts the Earth’s surface at any angle and passes through the center will always form().Athe equatorBa great circleCa small circleDa meridia