用下列（）命令查看Linux使用了多少内存 A: cat/proc/meminfo B: cat/bin/meminfo C: vi/proc/meminfo D: vi/user/local/meminfo

根据Linux文件系统结构，下列哪个目录是用户安装共享应用的？（） A: /dev/user/bin B: /usr/local/bin C: /etc/bin D: /sbin

A user named User1 uses a computer that runs Windows XP Professional. You need to enable User1 to create local user accounts. You must minimize the rights assigned to the User1 account. Which group should you add User1 to?（） A: Administrators B: Power Users C: Users D: Network Configuration Operator

A user named User1 uses a computer that runs Windows XP Professional. You need to enable User1 to create local user accounts. You must minimize the rights assigned to the User1 account.  Which group should you add User1 to?（） A: Administrators B: Power Users C: Users  D: Network Configuration Operators

将字段User改为user需要编写| rename User user

下列属于路由器用户视图常用命令的有（） A: debugging B: delete C: local-user D: firewall

已知,存在 QueryRunner对象 runner , SQL语句: String sql = "select * from user where id=?"; 下面操作中,能实现查询指定记录的选项是() A: User user=(User)runner.query(sql, new BeanListHandler(User.class), new Object[]{id}); B: User user=(User)runner.query(sql, new BeanHandler(User.class)); C: User user=(User)runner.query(sql, new BeanListHandler(User.class), id); D: User user=(User)runner.query(sql, new BeanHandler(User.class), new Object[]{id});

request.setAttribute("user","svse");session.setAttribute("user","bob");使用{user}则显示( )

hive中清空表user的HQL语句为（ ） A: delete from user; B: remove table user; C: drop table user; D: truncate table user;

删除用户账户命令是( ) A: DROP USER B: DROP TABLE USER C: DELETE USER D: DELETE FROM USER