神经网 nerve net

A.SIM锁卡

B.SIM欠费

C.网络信号差，无法连接到网络

D.未检测到SIM卡

在企业内建立企业( )并设立电子邮件(E-mail)系统，使得职工能便捷地相互收发信息。

A．增值网(Value-add Network) B．内部网络(Intranet)

C．外部网络(Extranet) D．互联网(Internet)

A.NET日志明细

B.通过会话日志

C.包过滤日志

D.分析日志

A.控制信号通道：由主备OMU/MPU板连接至系统内的其它单板的100M快速以太网(FE)通道和MBUS差分串行总线

B.高速TDM数据通道：由TNU/TCLU板连接至其它TDM业务单板的777M高速差分LVDS信号通道

C.高速分组数据通道：由NET板连接至各分组业务单板的1.25G/2.5G高速差分LVDS信号通道

D.级联信号通道：由前插级联板BLU、后插级联板FLU连接至IP网板、TDM网板的LVDS高速差分信号通道和LVTTL状态识别信号通道

How Exercise Makes You Smarter

Exercise does more than build muscles and help prevent heart disease. New science shows that it also boosts brainpower--and may offer hope in the battle against Alzheimer(痴呆症).

The stereotype of the "dumb jock" has never sounded right to Charles Hillman. A jock himself, he plays hockey four times a week, but when he isn't body-checking his opponents on the ice, he's giving his mind a comparable workout in his neuroscience and kinesiology lab at the University of Illinois. Recently he started wondering if there was a vital and overlooked link between brawn and brains--if long hours at the gym could somehow build up not just muscles, but minds. With colleagues, he started an experiment. He rounded up 259 Illinois third and fifth graders, measured their body-mass index and put them through classic PE routines: the "sit-and-reach", a brisk run and timed push-ups and sit-ups. Then he checked their physical abilities against their math and reading scores on a statewide standardized test. Sure enough, on the whole, the kids with the fittest bodies were the ones with the fittest brains, even when factors such as socioeconomic status were taken into account. Sports, Hillman concluded, might indeed be boosting the students' intellect.

Hillman's study, which will be published later this year, isn't definitive enough to stand alone. But it doesn't have to: it is part of a recent and rapidly growing movement in science showing that exercise can make people smarter. Other scientists have found that vigorous exercise can cause nerve cells to form. dense, interconnected webs that make the brain run faster and more efficiently. And there are clues that physical activity can stay away from the beginnings of Alzheimer's disease, ADHD and other cognitive disorders. No matter your age, it seems, a strong, active body is crucial for building a strong, active mind.

Some scientists have always suspected as much, although they have not been able to prove it. Now, however, armed with brain-scanning tools and a sophisticated understanding of biochemistry, researchers are realizing that the mental effects of exercise are far more profound and complex processes than they once thought. The processes start in the muscles. When the exercise is available, the muscle sends out chemicals, including a protein called IGF-1 that travels through the bloodstream, across the blood-brain barrier and into the brain itself. And then the brain issues orders fuels almost all the activities that lead to higher thought.

With regular exercise, the body builds up its levels of BDNF, and the brain's nerve cells start to branch out, join together and communicate with each other in new ways. This is the process that underlies learning: every change in the junctions between brain cells signifies a new fact or skill that's been picked up for future use. BDNF makes that process possible. Brains with more of it have a greater capacity for knowledge. On the other hand, says UCLA neuroscientist Fernando G6mez-Pinilla, a brain that's low on BDNF shuts itself off to new information.

Most people maintain fairly constant levels of BDNF in adulthood. But as they age, their individual neurons (神经)slowly start to die off. Until the mid-90s, scientists thought the loss was permanent-that the brain couldn't make new nerve cells to replace the dead ones. But animal studies over the last decade have overturned that assumption, showing that "neurogenesis" (神经发生)in some parts of the brain can be induced easily with exercise. Last week's study, published in the Proceedings of the National Academy of Sciences, extended that principle to humans for the first time. After working out for three months, all the subjects appeared to regain new neurons. This, too, might be BDNF at work, transforming stem cells into full-grown, functional neurons. "It was extremely exciting to see this ex

A．It can build muscles.

B．It can prevent heart disease.

C．It can keep people healthy.

D．It can improve brainpower.

A.当确认需要启动应急方案时，首先需要了解当前业务受损范围、业务影响种类(例如整网用户、部分BSC(BaseStationController)/RNC(RadioNetworkController)下用户、预付费用户、后付费用户，WAP、NET用户，公网、行业用户等)

B.接到事故通报后首先评估是否可以进行业务承载调整恢复动作，即是否可以将故障设备所承载业务调整到其他正常设备上承载，同时进行业务调整的相关准备工作

C.重大事故发生后，从网元性能统计指标上发现非核心网故障引起，只要通知周边网元排查，无需再做恢复动作

D.重大事故的产生原因中，有一部分是由于网络中某设备的误操作或者由操作触发了某网元的隐含缺陷。因此对事故发生前的USN操作以及USN周边网元的操作确认，是重大事故定位处理的优先环节

How many kinds of nerve cells are discussed in this talk？

A．One.

B．Two.

C．Three.

D．Four.

A．The function of brain.

B．The function and nature of nerve cells.

C．The five senses.

D．The chemical processes.

The nerve fibers connecting these light-sensitive elements to the brain______.

A．all work together

B．help each other

C．work independently

D．work in small groups

听力原文： There are many kinds of nerve cells, and this chapter deals mainly with three kinds. The sensory nerve cells carry messages of heat, light, sound and pressure from the skin, muscles and organs inside the body. Motor nerve cells carry messages to the muscles, and this causes the muscles to move. Connecting nerve cells go between the sensory nerve cells and motor nerve cells. After the messages go from the spinal cord to the brain, the brain sends messages through the motor nerve cells to the muscles. All these different nerve cells help us to see, hear, taste, smell and feel.

Now if you have no further questions about Chapter Seven, we'll go on to talk about the chemical processes involving the transfer of messages.

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A．One.

B．Two.

C．Three.

D．Four.