add pv

data_source/it_metrics/1.md

+
+## 标题
+
+PV:(Page View)
+
+## 描述
+
+A page view (PV) is a Web analytics term that refers to each time a Web page is successfully loaded onto a user's Web browser. Every time a Web page is viewed in a browser, the site's analytical software will increase the total page view count by one.
+
+请问一个用户刷新了一个页面10次，给这个页面带来了多少PV？
+
+## 关键词
+
+PV, 网页访问量
+
+## 链接
+
+<https://csdn.net>
+
+## 选项
+
+10
+1
+5
+8
+
+## 答案
+
+10

requirements.txt

+pre_commit
+skill-tree-parser
\ No newline at end of file