假如一个电子邮件的内容被篡改成完全相反的意思,我们就说破坏了()A、数据的完整性 B

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问题:

假如一个电子邮件的内容被篡改成完全相反的意思,我们就说破坏了()

A、数据的完整性

B、数据的可靠性

C、数据的及时性

D、数据的延迟性

考点:大学试题电子商务概论电子商务概论题库
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开尔文—赫姆霍兹不稳定

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一架天平,测量前左盘低右盘高,未经调节,称得一铁块的质量是50克,那么铁块的实际质量应比50克______.(填“大”或“小”)

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阅读理解。

     I heard many parents complaining that their teenage children are rebelling. I wish it were so. At your

age you ought to be growing away from your parents. You should be learning to stand on your own two

feet. But take a good look at the present rebellion. It seems that teenagers are taking the same way of

showing that they disagree with their parents. Instead of striking out boldly on their own, most of them

are clutching (紧握) at one another's hands for reassurance.

     They claim they want to dress as they please. But they all wear the same clothes. They set off in new

directions in music. But somehow they all end up huddled (聚在一起) round listening to the same record. Their reason for thinking or acting in thusandsuch a way is that the crowd is doing it. They have come ou

t of their cocoon (蚕茧) into a larger_cocoon.

     It has become harder and harder for a teenager to stand up against the popularity wave and to go his

or her own way. Industry has firmly carved out a teenage market. These days every teenager can learn

from the advertisements what a teenager should have and be. And many of today's parents have come to

award high marks for the popularity of their children. All this adds up to a great barrier for the teenager

who wants to find his or her own path.

     But the barrier is worth climbing over. The path is worth following. You may want to listen to classical music instead of going to a party. You may want to collect rocks when everyone else is collecting records. You may have some thoughts that you don't care to share at once with your classmates. Well, go to it.

Find yourself. Be yourself. Popularity will come-with the people who respect you for who you are. That

is the only kind of popularity that really counts.

1.In this passage, the author wants to tell ________.

A.teenagers to try to pursue their real selves

B.readers to try to be popular with people around

C.parents to try to control and guide their children

D.people to try to understand and respect each other

2.The author disapproves of rebelling teenagers ________.

A.growing away from their parents

B.following the popularity trend

C.walking a new way on their own

D.turning to their friends for help

3.The phrase "larger cocoon" at the end of the second paragraph refers to ________.

A.the distractive and variable society

B.the dazzling music world

C.the parental care and love

D.the popularity wave in the society

4.What does the author think of advertisements?

A.Convincing.  

B.Instructive.

C.Influential.  

D.Authoritative.

5.According to the author, what might happen when a teenager stands up against the popularity wave

and follows his/her own path?

A.He/She falls behind the time.

B.He/She loses good friends.

C.He/She faces all kinds of criticism.

D.He/She gains valuable popularity.

题型:单项选择题

在SQL语言中,建立存储过程的命令是()。

A.CREATE PROCEDURE

B.CREATE RULE

C.CREATE DURE

D.CREATE FILE

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宏观经济运行状况及其走势是( )的依据。

A.宏观调控

B.经济增长

C.经济结构优化

D.保持总量平衡

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