It_______ ten years since I last _______ to New York.
A. has gone; went
B. has been;went
C. Is;had gone
查看答案
My father_______on business for two weeks. He'll return in 3 days.
A. hasleft
B. has been away
C. has gone
sudo根据文件()判断谁是授权的用户
A. /etc/sudo
B. /etc/sudoers
C. /etc/login.defs
D. /etc/.login
找出root所属的带s位的程序()
A. find / -type f \( -perm -04000 -o -perm -02000 \)
B. find / -type f \( -perm -06000 -o -perm -02000 \)
C. find / -type f \( -perm -01000 -o -perm -02001 \)
D. find / -type f \( -perm -04000 -o -perm -01002 \)
找到具有组群读权限的文件和目录,以下命令正确的是()
A. find . -perm -u=r -exec ls -l {} \;
B. find . -perm -g=r -exec ls -l {} \;
C. find . -fstype -g=r -exec ls -l {} \;
D. find . -fstype ext4 -exec ls -l {} \;
微信支付 
支付宝支付