diff --git a/back.txt b/back.txt
index 00d61dd..c24d047 100644
--- a/back.txt
+++ b/back.txt
@@ -2,6 +2,4 @@
 
 16.掌握Git版本控制，支持团队多人协作开发与 CI/CD 流程；
 
-9.掌握Pinia状态管理，提高数据流转效率与代码可维护性。
-
 7.掌握Axios原理与封装技巧，理解其基于Promise的拦截器机制与适配器机制；
\ No newline at end of file
diff --git a/cv2.3.docx b/cv2.3.docx
deleted file mode 100644
index c7d55f1..0000000
Binary files a/cv2.3.docx and /dev/null differ
diff --git a/cv2.4.docx b/cv2.4.docx
new file mode 100644
index 0000000..cf4abaf
Binary files /dev/null and b/cv2.4.docx differ
diff --git a/cv2.4.pdf b/cv2.4.pdf
new file mode 100644
index 0000000..6187a32
Binary files /dev/null and b/cv2.4.pdf differ