下面选项中电子邮件格式正确的是()。 A: USER@SERVER.COM B: USER@SERVER.CN C: USER$SERVER.COM D: USER&SERVER.ORG

完整登录的脚本：（用户名为"yctei",密码为”123456“）#!/bin/bashecho "user:"echo "passwd:"read passwdif [ "$user" = "yctei" ] && [ "$passwd" = "123456" ]; thenecho "SUCCESS!"else echo "user name or passwd ERROR!"

题干:UI设计是什么意思? A: A:User Interface的缩写,是指用户界面设计 B: User Identity的缩写,是指用户识别设计 C: User Ideal的缩写,是指用户目标设计 D: UserIntention的缩写,是指用户意图设计

将字段User改为user需要编写| rename User user

下面哪几种方法可以查询档案的修改记录( ) A: Journal B: User Activity Log C: Profile> Options > Changes D: Quick Keys

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

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