单选题磁罗经在磁极附近不能指北，是因为此时地磁（）。A垂直分力较强B垂直分力等于零C水平分力较强D水平分力约为零
单选题
磁罗经在磁极附近不能指北，是因为此时地磁（）。
A
垂直分力较强
B
垂直分力等于零
C
水平分力较强
D
水平分力约为零
参考解析
解析：
暂无解析
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