“GVU’s 10th WWW user survey. (n.d.). Retrieved from http://www.cc.gatech.edu/user_surveys/survey-1998-10/” is an online report with ______________.

Many of the soundings shown on the chart are derived from ______ , Undue reliance should not be placed upon them。( ) A: A. complete and often very poor surveys B: B. correct and often very good surveys C: C. inadequate and often very old surveys D: D. adequate and present surveys

Many of the soundings shown on the chart are derived from （）.Undue reliance should not be placed upon them． A: complete and often very poor surveys B: correct and often very good surveys C: inadequate and often very old surveys D: adequate and present survey

将字段User改为user需要编写| rename User user

During the summer vacation, they made a series of surveys on campus.

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