问题
单项选择题
The line which connects the points of zero magnetic dip is（）.
A.An agonic line
B.The magnetic equator
C.A magnetic meridian
D.All of the above
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
The line which connects the points of zero magnetic dip is（）.
A.An agonic line
B.The magnetic equator
C.A magnetic meridian
D.All of the above
参考答案：B