查询SYSTEM.STUDENT表中所有学生的信息，请写出查询语句

Which examination should a student attend if he wants to go to the university in the UK? A: the A level system B: TOFEL C: SAT D: IELTS

‏Which examination should a student attend if he wants to go to the university in the UK?‏ A: SAT B: TOEFL C: the A level system D: IELTS

Which examination should a student must attend if he wants to go to the university in the UK? A: the A level system B: TOFEL C: SAT D: IELTS

The author probably feels that A: the educational system is sound, and students must follow every rule B: parents alone must take responsibility for the rise in student cheating C: the educational system in this country would benefit from a thorough evaluation D: students who cheat should be expelled from school

查询SYSTEM.STUDENT表中共有多少个班？ 其中班号为CLASSNO， 将查询结果的列名显示为“班级数量”

【单选题】使用命令添加用户student,设置密码为student,然后使用命令删除该用户。 A. useradd student passwd student userdel student B. useradd student passwd student sudo userdel student C. useradd student sudo passwd student sudo userdel student D. su root useradd student passwd student userdel student

Two systems of weights and measures used in the U.S. are ______. A: the U. S. Customary System and the metric system B: the International System and the metric system C: the Imperial System and the metric system D: the Customary System and the Imperial system

Starting system and ignition system belong to the electrical system？

‏删除数据表student的命令是________。‏ A: drop table student; B: drop student; C: delete table student; D: drop student;