SQL语言是一种 (96) 语言,其主要功能有 (97) ,它的典型句型为; SE

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问题:

SQL语言是一种 (96) 语言,其主要功能有 (97) ,它的典型句型为;
SELECT A1,A2,...An
FROM R1,R2,...Rm
WHERE F
其中Ai(i=1,2,…,n)、Rj(j=1,2,…,m)和F分别是 (98)
关系模式学生成绩表(S#,C#,Score)中S#是学生的学号,C#是课程号,Score是学号为S#学生的C#号课程的成绩。若要查询每门课程的平均成绩,且要求查询结果按平均成绩升序排列,平均成绩相同时,按课程号降序排列,可用SQL,语言写为 (99) 。若查询的结果仅限于平均分数超过85分的,则应 (100)

A.数据安全、数据编辑、数据并发控制
B.数据定义、数据操作、数据安全
C.数据定义、数据操作、数据控制
D.数据查询、数据更新、数据输入输出

考点:计算机软件水平考试初级程序员程序员
题型:单项选择题

阅读理解。

       Spiderman is one of the most famous comic book heroes of all time. He was created by Stan Lee in 1963

and was first introduced to the world in the pages of Marvel comic books. 

       Spiderman's story is the story of Peter Parker, a child who lost his parents and lives with his aunt and

uncle. Peter is a shy, quiet boy wearing glasses and has few friends. One day, on a high school class trip to a

science lab, he gets bitten by a special spider. Soon Peter realizes he has amazing powers: he is as strong and

quick as a spider and also has a type of sixth sense. He no longer needs his glasses and he can use his super

power to fly through the city streets! Remembering something his Uncle Ben has told him, that "with great

power, there must also come great responsibility (责任)," Peter decides to use his powers to fight enemies who

do cruel things to people. And so, Spiderman is born.

       Life is not easy for Peter even though he is a superhero. He is in love with Mary Jane but cannot tell her

about his amazing powers. Besides, his best friend Harry hates Spiderman! Peter is also short of money and

time. He has to sell photos of Spiderman (himself!) to a newspaper and he keeps losing his other jobs because

he's so busy saving people! Yet he has to fight different kinds of cruel enemies.

1. Who created Spiderman?[ ]

A. Stan Lee.

B. Marvel.

C. Peter Parker.

D. Superman.

2. What happened to Peter Parker after he was bitten by the spider? [ ]

A. He could not see with his eyes.

B. He became a spider.

C. He developed spider-like powers.

D. He was sick.

3. What does "with great power, there must also come great responsibility" mean? [ ]

A. Powerful people can do whatever they like.

B. People with power are always good.

C. Powerful people should have a responsibility to do good.

D. Powerful people are to blame for all the bad things that happen.

4. In what areas does Peter have problems that are similar to normal people? [ ]

A. Money, time, studying, reading.

B. Money, work, time, relationships.

C. Relationships, sport, money, work.

D. Money, work, time, sleep.

题型:单项选择题

用质子论判断下列既是酸又是碱的物质是()。

A.NaH2PO4

B.NH3

C.Na2S

D.H3PO4

题型:单项选择题

肝主疏泄的功能主要体现于()

A.贮藏血液

B.调畅情志

C.精血同源

D.促进消化吸收

E.促进血液的运行和津液的代谢

题型:单项选择题

公安部不需要接受中央政法委员会的领导,但是各级地方公安机关要接受各级党委的政法委员会的领导.( )

题型:单项选择题

下图是患甲病(显性基因为A,隐性基因为a)和乙病(显性基因为B,隐性基因为b)两种遗传病的系谱图,据图回答:

若III1与III4结婚,则所生孩子患病的概率为(),所以我国婚姻法禁止这种婚配方式

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