diff --git a/概率论与数理统计C/document.pdf b/概率论与数理统计C/概率论与数理统计C-2020秋-威海.pdf
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rename from 概率论与数理统计C/document.pdf
rename to 概率论与数理统计C/概率论与数理统计C-2020秋-威海.pdf