自己做了几个视频，多提意见啊

http://v.youku.com/v_show/id_XNjMwNzI1NDQw.html

 

排名函数RANK http://v.youku.com/v_show/id_XNjMwNzI1NDQw.html

按条件求平均值http://v.youku.com/v_show/id_XNjI5OTcyNjMy.html

使用EXCEL制作成绩条 http://v.youku.com/v_show/id_XNjI5OTcyNjMy.html

IMG写盘操作 http://v.youku.com/v_show/id_XNjI5NTE2NzIw.html

IPC网络监控基础知识 http://v.youku.com/v_show/id_XNjI5NjIxNDI4.html