单选题过测者天底和两天极的半个大圆称为（）。A测者真地平圈B天体时圈C测者子圈D测者午圈
单选题
过测者天底和两天极的半个大圆称为（）。
A
测者真地平圈
B
天体时圈
C
测者子圈
D
测者午圈
参考解析
解析：
暂无解析
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