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requency re.use in the network)？()
A.It increases the sensitivity of the mobile
B.It increases the number of mobiles with high C/I
C.The power consumption in the radio base station is reduced
D.It reduces the risk of MS receiver saturation
E.It reduces the number of mobiles with low C/I
答案
更多“Why can BTS power control be used to increase the capacity (that is, tightening the f”相关的问题
第1题
A.Because the wastewater hotter than that limit will do a lot of damage to ecosystems.
B.Because the wastewater hotter than that limit will lead to damage to workers health.
C.Because nuclear power plants can be running at a lower energy level.
D.Because the French government is concerned about the climate change.
第2题
听力原文：W: You don't look smart this morning. I can see you're not happy.
M: I had never expected this would have happened to me. We had a power failure at home last night.
W: How come？ Did anyone in the family, do anything wrong？
M: You've guessed it. It was all my father's fault.
W: What did he do？
M: I was just watching a wonderful football feature program on TV when the lights suddenly went out.
W: Why was that？
M: You see, we'd just had our dinner. My mother was washing my jeans in the washing machine. And the air-conditioners were on in both rooms. I was in my room watching TV.
W: What was your father doing then？
M: He wanted to warm his tea in the microwave oven. He plugged it in and the fuse broke. And everything stopped all of a sudden.
W: Your next-door neighbor is an electrician, isn't he？
M: Yes. Luckily, he happened to be at home. He came and fixed it up. But it was half an hour later. I had already missed a lot.
W: It was an annoying experience for a sports fan like you. But don't miss the basketball finals this evening. Make sure there is no power failure tonight.
Questions 23 to 25 are based on the conversation you have just heard.
23. Why does the man look depressed this morning？
24. What was the immediate cause of the power failure？
25. What will the man probably do tonight？
(20)
A．He failed in a power test yesterday.
B．He never expected himself to be happy.
C．It was because of his father's fault.
D．He missed about 30 minutes of a program.
第3题
Power seekers strive hard to 【C5】______ positions where they can 【C6】______ authority 【C7】______ large numbers of people.
Individual performers who lack this 【C8】______ are not likely to 【C9】______ far up the managerial ladder. They usually scorn company politics and 【C10】______ their energies to other types of activities. The power 【C11】______ is part of management, and it is played best by those who enjoy it 【C12】______ .
One of the least rational 【C13】______ of business organizations is that of 【C14】______ managers who have a 【C15】______ need to exercise authority, and then teaching them that authoritative 【C16】______ are wrong and that they should be consultative or participative. It is a serious mistake to teach managers that they should 【C17】______ styles that are inconsistent 【C18】______ their unique personalities. Yet this is precisely what a large number of business organizations are doing; and it explains, 【C19】______, why their management development programs are not 【C20】______ .
【C1】
A．move
B．motive
C．exercise
D．objective
第4题
听力原文： Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.
Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.
There are many environment-friendly sports. Power walking is one of them that you could take up today. You don't need any special equipment except a good pair of shoes; and you don't have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.
Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be "green gyms". They are better replacements for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it's free.
Questions 29 to 32 are based on the passage you have just heard.
29. Which is the speaker most probably in favor of？
30. What do we know about golf from the passage？
31. Why does the speaker use power walking as an example？
32. What is the speaker's main purpose of giving this speech？
(33)
A．Cycling around a lake.
B．Motor racing in the desert.
C．Playing basketball in a gym.
D．Swimming in a sports center.
第5题
Hybrid Cars
Have you pulled your car up to the gas pump lately and been shocked by the high price of gasoline？ As the pump clicked past $20 or $30, maybe you thought about trading in your car for something that gets better mileage. Or maybe you're worried that your car is contributing to the greenhouse effect.
The auto industry has the technology to address these concerns. It's the hybrid car. You're probably aware of hybrid cars because they've been in the news a lot. Most automobile manufacturers have announced plans to manufacture their own versions. What makes it a "Hybrid"？
Any vehicle is a hybrid when it combines two or more sources of power. In fact, many people have probably owned a hybrid vehicle at some point. For example, a moped (a motorized pedal bike) is a type of hybrid because it combines the power of a gasoline engine with the pedal power of its rider.
Hybrid vehicles are all around us. Most of the locomotives we see pulling trains are diesel-electric hybrids. Cities like Seattle have diesel-electric(以柴油发动机发电的) buses—these can draw electric power from overhead wires or run on diesel when they are away from the wires. Giant mining trucks are often diesel-electric hybrids. Submarines are also hybrid vehicles — some are nuclear-electric and some are diesel-electric. The gasoline-electric hybrid car is a cross between a gasoline-powered car and an electric car.
Hybrid Structure
You can combine the two power sources found in a hybrid car in different ways. One way, known as a parallel hybrid, has a fuel tank, which supplies gasoline to the engine. But it also has a set of batteries that supplies power to an electric motor. Both the engine and the electric motor can turn the transmission at the same time, and the transmission then turns the wheels.
By contrast, in a series hybrid the gasoline engine turns a generator, and the generator can either charge the batteries or power an electric motor that drives the transmission. Thus, the gasoline engine never directly powers the vehicle.
Why Build Such a Complex Car？
You might wonder why anyone would build such a complicated machine when most people are perfectly happy with their gasoline-powered cars. The reason is twofold: to reduce tailpipe emissions and to improve mileage. These goals are actually tightly interwoven.
Evolution of the Hybrid
The hybrid is a compromise. It attempts to significantly increase the mileage and reduce the emissions of a gas-powered car while overcoming the shortcomings of an electric car.
The Problem with Gas-powered Cars
To be useful to you or me, a car must meet certain minimum requirements. The car should be able to:
-Drive at least 300 miles (482 km) between re-fueling
-Be refueled quickly and easily
-Keep up with the other traffic on the road
A gasoline car meets these requirements but produces a relatively large amount of pollution and generally gets poor gas mileage. An electric car, on the other hand, produces almost no pollution, but it can only go 50 to 100 miles (80 to 161 km) between charges. And the problem has been that it is very slow and inconvenient to recharge.
A driver's desire for quick acceleration causes our cars to be much less efficient than they could be. You may have noticed that a car with a less powerful engine gets better gas mileage than an identical car with a more powerful engine. Just look at the window stickers(有图形或文字的粘贴标鉴) on new cars at a dealership for a city and highway mph comparison.
The amazing thing is that most of what we require a car to do uses only a small percentage of its horsepower! When you are driving along the freeway at 60 mph (96.6 kph), your car engine has to provide the power to do three things:
&
A．Y
B．N
C．NG
第6题
Why an electronic book？ Computers can store a ton of data and their laptop companions make all that information portable. True enough. But laptops(便携式电脑) and similar portable information de vices require a lot of power and heavy batteries to keep their LCD screens operating. And LCDs are not easy to read in the bright light of the sun.
Fact is, when it comes to portability, easy viewing, and low power requirements, it's hard to beat plain old paper.
So let's make the ink electronic.
That's the deceptively simple premise behind a project currently coming to fruition at the Massachusetts Institute of Technology. Some hurdles mostly having to do with large-scale manufacturing remain, so it will be a few years before you see an electronic book for sale in stores. But the basic technology already exists, developed at the Institute's Media Lab by a team led by physicist Joe Jacobson.
Thanks to electronic ink, the book essentially typesets itself, receiving instructions for each page via electronics housed in the spine. From a power standpoint, this process makes the electronic book very efficient. Unlike an LCD screen, which uses power all the time, energy is no longer needed to view the electronic book's pages once they are typeset. Only a small battery would be required, as opposed to the large ones needed to power laptop computers and their LCDs.
Convenience, though, is still the main attraction—and that means more than simple portability. Be cause the information is in electronic form, it can be easily manipulated.
Jacobson thinks an electronic book will be affordable around $ 200 for a basic read-only model to about $ 400 for one that would record your margin scribbles. Some hurdles remain, though, before you can take an electronic book with you anywhere. Paper is produced in long sheets, and Jacobson is still working on the best method to integrate electronic ink into that process. To avoid having to use thousands of tiny wires on each page, the ink itself must be conductive. Such ink was recently demonstrated in the lab but has yet to be produced in volume. "Essentially," notes Jacobson, "We're trying to print chips."
Jacobson is confident, however, that this can be done on a large scale. If Jacobson succeeds, he will have made the book for the 21st century.
According to the passage, which book is the only book you'll ever need？
A．Americans like sports and sports reveal much about the changing ethnic structure of the United States
B．A single volume.
C．New Age tome.
D．An electronic book.
第8题
Mr. Nye has now turned his attention to the relationship between power and leadership, in both the political and business spheres. Machiavelli, he notes, concluded that "one ought to be both feared and loved, but as it is difficult for the two to go together, it is much safer to be feared than loved." In short, hard power is preferable to soft power. But modern leadership theories have come to the opposite conclusion.
The context of leadership is changing, they observe, and the historical emphasis on hard power is becoming outdated. In modern companies and democracies, power is increasingly diffused and traditional hierarchies (等级制) are being undermined, making soft power ever more important. But that does not mean coercion should now take a back seat to persuasion, Mr. Nye argues. Instead, he advocates a synthesis of these two views. The conclusion of The Powers to Lead, his survey of the theory of leadership, is that a combination of hard and soft power, which he calls "smart power", is the best approach.
The domination theoretical model of leadership at the moment is, apparently, the "transformational leadership pattern". Mr. Nye has performed a valuable service in rounding up and summarizing the various academic studies and theories of leadership into a single, slim volume. He examines different approaches to leadership, the morality of leadership and how the wider context can determine the effectiveness of a particular leader. There are plenty of anecdotes and examples, both historical and contemporary, political and corporate.
Leadership is a slippery(狡猾的) subject, and as he depicts(描述) various theories, even Mr. Nye never quite nails the jerry to the wall. He is at his most interesting when discussing the moral aspects of leadership—in particular, the question of whether it is sometimes necessary for good leaders to lie—and he provides a helpful 12-point summary of his conclusions. A recurring theme is that as circumstances change, different sorts of leaders are required, a leader who thrives in one environment may struggle in another, and vice versa. Ultimately that is just a fancy way of saying that leadership offers no easy answers.
According to the passage, the reason why Mr. Nye is so popular is that ______.
A．he advocates that leaders should be feared
B．he advocates the importance of persuasion and influence
C．he was once the leader of Harvard
D．he thinks that coercion should give way to persuasion
第9题
听力原文：W: David, can I give you a hand with one of those grocery bags？
M: Sure, Nancy. Could you take this one please？ I didn't realize how heavy these bags would be.
W: Why did you buy so much stuff when you have to walk back home from the store？
M: Well, I didn't intend to buy a lot. But I'm having some people home and I guess I need more than I expected.
W: What's the occasion？
M: The people I live with, the Williams, have been on vacation for a month and I thought I'd surprise them. I'm inviting some of their friends and families for a welcome home dinner.
W: Oh, that's really thoughtful of you.
M: I think it's the least I can do for them. They've been letting me stay with them rent free while I'm in school.
W: Really？ That's pretty generous of them.
M: Well, they understand how difficult it is to be a student. They've been such a big help to me. I thought that this might be a small way to thank them for the generosity.
W: You are lucky to meet such a good family.
(26)
A．He is preparing to go on vacation.
B．He is going to have a long journey.
C．He is going to hold a birthday party.
D．He is preparing a home coming dinner.
第10题
Why the power of small talk should never be underestimated？
A．Because people may begin a long lasting friendship or business association.
B．Because people may have a nice chat.
C．Because people may exchange information.
D．All above.
第11题
