知网入口：
http://dzqk.rdedu.net/kns50/?logintype=guest
http://222.191.246.210:8181/KNS50/index.aspx
http://124.93.245.86/kns55/
http://58.132.9.109/kns50/index.aspx
http://124.205.185.11/Kns55/default.aspx?

ovid账号：
入口：http://gateway.ovid.com
账号：genval199 密码：valencia
账号：ovidppv 密码：x1h4j5jk4
账号：gztcmu999 密码：guangzho