TD-LTE最小的时频资源单位是()。 A.Resource ELement B.R

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问题:

TD-LTE最小的时频资源单位是()。

A.Resource ELement

B.Resource Element group

C.Control Channel Element

D.Resource Block

考点:LTE认证考试电信LTE考试电信LTE考试题库
题型:单项选择题

市场营销是一个社会管理过程,在这个过程中个人和群体通过创造、提供、与他人交换有价值的产品而满足自身的需要和欲望。

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如图所示,两根相距为l的平行直导轨ab、cd、b、d间连有一固定电阻R,导轨电阻可忽略不计;MN为放在ab和cd上的一导体杆,与ab垂直,其电阻也为R;整个装置处于匀强磁场中,磁感应强度的大小为B,磁场方向垂直于导轨所在平面(指向图中纸面内);现对MN施力使它沿导轨方向以速度v(如图)做匀速运动;令U表示MN两端电压的大小,则(  )

A.U=vBl,流过固定电阻R的感应电流由b到d

B.U=vBl,流过固定电阻R的感应电流由d到b

C.U=vBl,流过固定电阻R的感应电流由b到d

D.U=vBl,流过固定电阻R的感应电流由d到b

题型:单项选择题

阅读理解

     June 26, 2000 - the Human Genome(基因组) Project, a great $3 billion, 15-year task aimed at

drawing the genetic(遗传的) map of humans, is now more than 90 percent completed. The scientific

and medical communities are very excited about the chances genetic research provides for getting rid

of diseases and prolonging(延长) human life. But those communities and policymakers also are careful

about the scientific door they are opening as the project uncovers the mysteries of life.

     For the last few years, the genetic advances in the developing field of biotechnology(生物技术) have

provides material for all kinds of work, but the developments of modern science in unlocking the secrets

of the human genetic code have opened a world of possibilities for human health, as well as for the

popular imagination.

   While European and Japanese researchers are making rapid progress in decoding(解码) human DNA,

the leading organization for genetic research is in the United States, which began in 1990, is "unlocking

the code" of the human body to learn how to defeat fatal diseases . Already, the Human Genome Project

has become widely known and praised for finding the genes connected with terrible diseases as yet, and

making progress toward separating the genes that show a sign of breast cancer or AIDS.

     Once these genes are found and studied, researchers can develop new ways to attack infections and

genetic diseases. Medical companies are very interested in mapping the human genome, as they expect to develop a lot of new drugs for these illnesses.

1. Why did the scientists work hard at mapping the human genome?

A. Because the human genome can help us live longer.

B. Because they wanted to be better known than others.

C. Because the human genome can provide a lot of money

D. Because the human genome's completion can help them get rid of many diseases.

2. Which of the following is NOT true?

A. If the genes can be found, scientists can study many new ways to cure illnesses.

B. The scientists have made great progress in connecting the genes with the cancers.

C. Many medical companies show great interest in drawing the human genome map.

D. The United States began the Genes Study early in the 19th century.

3. Which country studied the genes most rapidly in the world?

A. Japan.  

C. The United States  .  

B. British England    

D. China.

4. We can conclude that the Human Genome Project can cause _______.

A. the policy makers to feel very happy.  

B. the scientists to work harder

C. many people to live longer.          

D. a lot of companies to produce many new drugs

5. What' the best title of the passage?

A. unlocking genetic code                     

B. the genes' discovery

C. human genome's science                    

D. the genes and the scientists

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【问题2】
在创建IPSec安全策略时,规则属性窗口如图12-7所示。在“IP筛选器列表”中应选择 (8)

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地板开裂的原因及解决办法?

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