diff --git "a/doc/\346\236\266\346\236\204\345\233\276.pptx" "b/doc/\346\236\266\346\236\204\345\233\276.pptx"
index c00888e..cdf5318 100644
--- "a/doc/\346\236\266\346\236\204\345\233\276.pptx"
+++ "b/doc/\346\236\266\346\236\204\345\233\276.pptx"
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