He asked his father . [ ]
A. where it happens
B. what was happen
C. how it happened
答案:C
某用户的E-mail地址是lusp@online.sh.cn,那么该用户邮箱所在服务器的域名是______。
A..sh.cn
B..cn
C.online.sh.cn
D.lusp
项目安全管理的原则有()。
A.预防为主,教育为先
B.不伤自己,不伤他人
C.守好“四口”,做到“五无”
D.强化安全检查,并持续改进