UNIX文件的存取权限包括以下哪几类用户的权限:()
A.informix
B.owner
C.tellin
D.group
E.other
参考答案:B, D, E
--- Can I smoke here?
--- Sorry. On no condition_____ in the library.
A.smoking permits;
B.smoking is permitted
C.does smoking permit
D.is smoking permitted
220KVSF6开关压力是如何规定的?