网络安全的基本目标是实现信息的机密性、可用性、完整性和______。

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问题:

网络安全的基本目标是实现信息的机密性、可用性、完整性和______。

考点:计算机等级考试网络技术三级网络技术笔试
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联合型瑞文测验的每个题目由一幅缺少一小部分的大图案和作为选项的( )张小图案组成。

A.4
B.4~6
C.6
D.6~8

题型:填空题

甲公司持有A、B、C三种股票,在由上述股票组成的证券投资组合中,各股票所占的比重分别为50%、30%和20%,其β系数分别为2.0、1.0和0.5。市场平均收益率为15%,无风险收益率为10%。A股票当前每股市价为12元,刚收到上一年度派发的每股1.2元的现金股利,预计股利以后每年增长8%。要求:

(1)计算以下指标:①甲公司证券组合的β系数;②甲公司证券组合的风险收益率;③甲公司证券组合的必要收益率;④投资A股票的必要收益率。

(2)利用股利增长模型分析当前出售A股票是否对甲公司有利。

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意不存人

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接受腔适配的常见问题包括坐骨结节压痛。造成坐骨结节压痛的原因是()

A、接受腔内侧的A-P距离过小

B、接受腔初始屈曲角度大

C、坐骨支撑面向内突起的边缘的圆角直径过大

D、接受腔底部过紧

题型:填空题

To face the music

Like every language, American English is full of special expressions, phrases that come from the day-to-day life of the people and develop in their own way. Our expression today is “to face the music”.

When someone says, “well, I guess I’ll have to face the music,” it does not mean he’s planning to go to the concert. It is something far less pleasant, like being called in by your boss to explain why you did this and did that, and why you didn’t do this or that. Sour music indeed, but it has to be faced. At sometime or another, every one of us has had to face the music, especially as children. We can all remember father’s angry voice, “I want to talk to you.” and only because we did not obey him. What an unpleasant business it was!

The phrase “to face the music” is familiar to every American, young and old. It is at least 100 years old. And where did this expression come from? The first explanation comes from the American novelist, James Fenimore Looper. He said, in 1851, that the expression was first used by actors while waiting in the wings to go on the stage. When they got their cue to go on, they often said, “Well, it’s time to face the music.” And that was exactly what they did — facing the orchestra which was just below them. And an actor might be frightened or nervous as he moved on to the stage in front of an audience that might be friendly or perhaps hostile, especially if he forgot his lines. But he had to go out. If he did not, there would be no play. So the expression “to face the music” come to mean “having to go through something, no matter how unpleasant the experience might be, because you knew you had no choice.”

Other explanations about the expression go back to the army. When the men faced an inspection by their leader, the soldiers would be worried about how well they looked. Was their equipment clean, shinny enough to pass the inspection? Still the men had to go out and face the music of the band as well as the inspection. What else could they do? 

Another army explanation is more closely related to the idea of facing the results and accepting the responsibility for something that should not have been done. As, for example when a man is forced out of the army because he did something terrible, he is dishonored. The band does not play. Only the drums tap a sad, slow beat. The soldier is forced to leave, facing such music as it is and facing the back of his horse.

小题1: How many ways does the phrase “to face the music” comes from?

A.1

B.2

C.3

D.4小题2:What’s the meaning of “to face the music?”

A.To face something far less pleasant.

B.To face the stage.

C.To face the back of one’s horse.

D.To face one’s leader.小题3:Which of the following is a situation of facing the music?

A.When we are playing basketball.

B.When we are making a speech.

C.When we are having a party.

D.When we are talking with somebody.小题4:The underlined word “hostile” means _______. 

A.unfriendly

B.dislike

C.unkind

D.unnecessary

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