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地球公转周期()。

单选题
2021-09-01 19:57
A、回归年的365日6小时9分10秒
B、回归年的365日5小时48分46秒
C、恒星年365日5小时48分46秒
D、恒星日的23h56min04s
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正确答案
B

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