Chrome，
QQ浏览器
.
![[概统笔记|基础篇]第1章 随机事件及其概率](http://imgshow.1ydt.com/img?url=%2F%2Fi0.hdslb.com%2Fbfs%2Farchive%2F081760c4a044de09a4ef9cad563f4a46a1949893.jpg%40672w_378h_1c_%21web-search-common-cover)
.