以下哪几种技术是用来解决在VLAN 规划中VLAN 数目不够的问题（） A:  Super-VLAN B:  Isolate-user-VLAN C:  QinQ D:  Voice-VLAN

Tom is scared that they are going to laugh at him, ______, isolate him.

将字段User改为user需要编写| rename User user

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});

在Linux桌面环境中,若要切换进入字符界面,以下命令中,可实现的是()。 A: systemCtl isolAte grAphiCAl.tArget B: systemCtl reBoot C: stArtx D: systemCtl isolAte multi-user.tArget

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

She seems determined to isolate herself ______ everyone. A: to B: from C: y D: in

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

要删除用户user，同时也删除其家目录，则应使用指令 A: userdel user B: userdel -r user C: deluser -r user D: deluser user