题目内容
为了进行差错控制，必须对传送的数据帧进行校验。CRC-16标准规定的生成多项式为G(x)＝X16+X15+X2+1，它产生的校验码是(62)位。如果CRC的生成多项式为 G(X)＝X4+X+1，信息码字为10110，则计算出的CRC校验码是(63)。
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80年代的新时期文学在文学本体回归的过程中，对一系列涉及文艺观念的问题进行了激烈而深入的探讨，这些探讨都
Psychologists now believe that noise has a considerable effect on people's attitudes and behavior. Experiments have proved that in noisy situations(even temporary ones), people would have more anger and less cooperation; In more permanent noisy situations, many people cannot work hard, and they suffer from severe anxiety as well as other psychological problems. Some researchers, who study various aspects of effect of noise in people's mental life, maintain that noise, either temporary noise or permanent noise, often destroy creativity and activity by disturbing people's emotion and make them more easily annoyed and hard to cooperate.
However, psychologists distinguish between "sound" and "noise". "Sound" is measured physically in decibels(分贝). "Noise" cannot be measured in the same way because it refers to the psychological effect of sound and its level of "intensity" depends on the situation. Thus, for passengers at an airport who expect to hear airplanes taking off and landing, there may be a lot of sound, but not much noise(that is, they are not bothered by the noise). By contrast, if you are at a concert and two people behind you are whispering, you feel they are talking noisily even if there is not much sound. You notice the noise because it affects you psychologically.
Both sound and noise can have negative effects, but what is most important is if the person has control over the sound. People walking down the street with earphones, listening to music that they enjoy, are receiving a lot of decibels of sound, but they are probably happy hearing sounds which they control. On the other hand, people in the street without earphones must tolerate a lot of noise which they have no control over. It is noise pollution that we need to control in order to help people live more happily.
According to the passage, people______.
电影《创业》在塑造人物形象方面的突出成就。
当代文学史的第二阶段是以1978年8月开始的______为标志的，“新时期”文学开始了真正的“复苏”。
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