下面使用DROP USER语句删除用户user1的语句中,正确的是 A: DROP USER user1@localhost; B: DROP USER 'user1'.’ocalhost'; C: DROP USER user1.localhost; D: DROP USER 'user1'@'localhost';

Linux系统命令提示符为[user1@localhost root]$，当然用户所在目录为（ ） A: user B: localhost C: root D: $

‏Linux系统命令提示符为[user1@localhost root]$，当然用户所在目录为（ ）‏ A: user B: localhost C: root D: $

实现将root用户的密码修改为'1111'的语句，正确的是（） A: alter user 'root'@'localhost' identified by ‘1111’; B: alter user 'root'@'localhost' identified by 1111; C: alter user 'root'@'localhost' =‘1111’; D: set user 'root'@'localhost' =‘1111’;

下面使用DELETE语句删除用户user2的语句中,正确的是 A: DELETE FROM mysql.user WHERE Host='localhost' AND User='user2'; B: DELETE FROM mysql.user WHILE Host='localhost' AND User='user2'; C: DELETE FROM mysql.user WHERE Host='localhost' OR User='user2'; D: DELETE FROM mysql.user WHILE Host='localhost' OR User='user2';

【user1@localhost ~】$pwd命令的执行结果为（） A: user1 B: localhost C: ~ D: /home/user1

下面通过UPDATE语句将root用户的密码修改为mypwd2的语句中,正确的是 A: UPDATE mysql.user SET Password=PASSWORD('mypwd2') WHERE User='root' and Host='localhost'; B: UPDATE mysql.users SET Password=PASSWORD('mypwd2') WHERE User='root' and Host='localhost'; C: UPDATE mysql.users SET Password=PASSWORD('mypwd2') WHERE User='root' OR Host='localhost'; D: UPDATE mysql.user SET Password=PASSWORD('mypwd2') WHILE User='root' OR Host='localhost';

Linux系统命令提示符为[user1@localhost root]$,当前用户所在目录为: A: $ B: root C: user1 D: localhost

Linux系统命令提示符为[user1@localhost root]$,当前用户所在目录为: A: $ B: oot C: user1 D: localhost

Linux系统命令提示符为[user1@localhost root]$,当前用户所在目录为: A: $ B: root C: user1 D: localhost