Five people are interviewed about manners in the UK.
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The middle-classes hold a knife like a pen.
A. 对
B. 错
Foreigners should just be themselves when in Britain.
A. 对
B. 错
MySQL中存储用户全局权限的表是( )
A. table_ priv
B. procs priv
C. columns priv
D. user
删除用户的命令是( )。
A. drop user
B. delete user
C. drop root
D. truncate user