The points on the earth’s surface where the magnetic dip is 90° are（）.<br>A:Along the magnetic equator<br>B:Connected by the isoclinal line<br>C:The isopors<br>D:The magnetic poles

The points on the earth’s surface where the magnetic dip is 90° are（）.
A:Along the magnetic equator
B:Connected by the isoclinal line
C:The isopors
D:The magnetic poles

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