【PConline 资讯】12306网站的图形验证码在刚开始推出时，就曾在网络上掀起过一阵热议，被网友调侃为是“认图+常识”的考验，甚至还被误认为是PS恶搞。 防火防盗防刷票，12306为了防刷票...
】 【 PConline information graphic verification code at the beginning of 12306 web site launched, have had a heated debate, and on the Internet by netizens as is the test of "map-reading + common sense", even be mistaken for PS parody. Fire alarm control brush votes, 12306 in order to prevent brush ticket...
