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Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links?()
A . use BGP as the CE-PE routing protocol
B . use OSPF as the CE-PE routing protocol
C . use EIGRP as the CE-PE routing protocol
D . use the SP to redistribute routes as external routes for OSPF and EIGRP
E . use route redistribution at each location to ensure external routes are imported into the IGP
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When a business suffers a security breach, there can be serious ramifications. What is one of the immediate impacts that the business can suffer because of a security breach?()
A . loss of retail sales
B . loss of customer faith
C . disruption of business operations
D . inability to deliver products or service
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When a business suffers a security breach, there are be serious ramifications. What is one of the immediate impacts that the business can suffer because of a security breach?()
A . loss of retail sales
B . loss of customer faith
C . disruption of business operations
D . inability to deliver products or service
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The energy for pushing this piston up can be supplied from (), so that the piston can keep moving up and down.
A . the same piston
B . the piston nearby
C . the other pistons
D . the generators on board
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On Pandora corporations from earth are mining a rare mineral that is the key to solving the energy crisis on Earth.
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The solar cell can _____ the energy of sunlight into electric energy.
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The high-speed trains can have a major impact on travel preferences.
A.influence
B.force
C.surprise
D.power
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According to the result of the tests of the body's energy needs, physiologists concluded that _______.
A.two meals a day is best to the elderly people
B.three-meal pattern is suitable nutritionally to the average adult.
C.children need more than three meals a day
D.having snacks is very popular in America.
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We can easily see from the definition of k _______ the ratio of a force _______ a length that the unit of elastic potential energy ()
A.by……with
B.by……to
C.as……with
D.as……to
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The most significant breakthrough predicted by Bill joy will be an inexhaustible green energy source that can’t be used to make pollutions___________
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What's the percent of energy that warms the earth?
A.30%.
B.50%.
C.70%.
D.13%.
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If the assembly line is redesigned, a smooth work flow can be achieved and time and energy can be saved.翻译
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According to the passage, can be compared to the string of a bow for both of them store energy when stretched .
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Solar-generated electricity docs not carry the health or environmental risks of nuclear energy. We can never run out of solar energy, because the sun is a renewable energy source.
Two kinds of systems generate solar energy: passive and active. A passive solar energy system generates energy from fixed glass plates built into the structure, without the use of mechanical devices. A greenhouse is a good example of a building heated by passive solar energy. The sun's rays penetrate the glass panels to heat the interior of the greenhouse, and the heat is retained through tight construction. The same principle can be applied to heating homes and other buildings on sunny days.
An active solar energy system makes use of mechanical devices and moving parts to maximize the amount of energy collected. For example, solar energy can be generated with photovoltaic cells, which are made from silicon, an abundant element. A bank of photovoltaic cells can be encased in glass and wired together to produce electricity. The bank of cells can be mounted on the roof at an angle that maximizes exposure to direct sunlight.
Another device to generate solar energy is a flatplate collector, which is an insulated glass box, typically placed on the sun-facing roof. Inside the box are pipes filled with air or water. The heat that builds up in the pipes can be used for home heating and hot-water supplies.
Two questions persist about solar energy:
How can solar energy be used in colder climates?
How can solar energy be used on cloudy days?
Scientists have the technological means to overcome both problems, but the solutions may make solar energy more expensive for many people than other alternatives.
The energy released from the sun is about 10,000 degrees F, but by the time the rays reach the earth the temperature is considerably lower, because the sun's energy has diffused over a large area during its long journey. To be useful energy in colder climates, the sun's diffused rays must be concentrated.
The process of concentrating the sun's rays is not difficult. Scouts learn that sunlight focused with a lens at the proper angle can burn a piece of paper. In warmer climates, the sun's rays can provide heat and hot water with little concentration. In colder climates, compensation is made simply by collecting more of the sun's rays by building a larger collecting device and rotating the lenses as the sun's position in the sky changes. In cloudy weather, another system can store the energy generated from the sun. For example, water heated by the sun can be retained in protected storage containers.
Because of high installation coasts, solar energy is more expensive than other sources of energy for most consumers. At this time, electricity provided by a solar power plant costs two or three times the amount of a coal-fired plant. But solar equipment is generally installed on the consumer's roof rather than at a central power plant, as is the case with other energy sources. A family must pay several thousand dollars to construct a solar energy system capable of providing virtually all household heat and electricity. The family is also responsible for maintenance and repair of the system.
While initial construction costs are much higher, monthly heating and electricity bills are much lower once the system begins operation. Users of solar energy do not face rising monthly electricity bills from a power company, which passes to its consumers the increasing costs of purchasing fossil fuels and constructing new facilities. Solar energy is economical for consumers who remain in the same house for many years and can benefit from low monthly operating costs. For most families, solar energy will become more attractive when other energy sources become more expensive. One indication of solar energy's bright future is that petroleum companies have bought the m
A.The technical problem of providing heat on cloudy days are not yet solved.
B.It costs much to have a solar energy system installed at home.
C.There are basically two types of solar energy.
D.Solar energy is clean, inexhaustible and free of risk.
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Renewable energy sources can be replenished in a short period of time. The five renewable sources used most often include hydropower (water), solar, wind, geothermal, and biomass. Renewable energy's impact on the world's energy picture is significant. Many important events have occurred during the history of using renewable sources to generate electricity--but the overall consumption from renewable energy sources has declined by about 15 percent from their I996 peak to about 6 quads in 2005.
The use of renewable energy is not new. Five generations (125 years) ago, wood supplied up to 90 percent of our energy needs. Due to the convenience and low prices of fossil fuels, wood use has fallen. Now, the biomass which would normally present a disposal problem is converted into electricity (e.g., manufacturing wastes, rice hulls, and black liquor from paper production).
Historically, low fossil fuel prices, especially for natural gas, have made growth difficult for renewable fuels. The deregulation and restructuring of the electric power industry could have a major impact on renewable energy consumption. Demands for cheaper power in the short term would likely decrease demand for renewable energy, while preferences for renewables included in some versions of proposed electricity restructuring legislation would breathe new life into this industry.
Use of renewables in the United States is not currently expected to approach that of the major fuels, and due to their limitatious (e.g., their intermittent nature-cloudy days have no solar gain, quiet days mean no wind blows to drive wind turbines, dams are primarily for flood control, so hydroelectricity production varies as dams' water levels change), renewables may never provide "the" answer to all energy problems. Around the world, renewable energy is proving to be of great value.
In 2005, about 6.1 Quadrillion Btu (Quads) of U.S. energy came from renewable fuels. Each of the energy sources we use is measured, purchased, and sold in a different form. Many units of measurement are used to measure the energy we use each day.
From 1996 to 2005, the trend of the consumption from renewable energy was ______.
A.increasing
B.decreasing
C.irregular
D.not mentioned
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Scientists discovered that atoms of some substances are radioactive. This means that they are unstable and can be split. The chain of splitting atoms releases great destructive energy and it was this discovery which led scientists to develop the idea of an atomic bomb. The American government secretly worked to produce such a bomb and the first version was much more powerful than anyone had thought.
By this time, the World War II had ended in Europe. But the Japanese refused to surrender, the Americans decided that by dropping an atomic bomb on Japan, they could end the war quickly and save more of their soldier’s lives.
Soon after midnight on 6 August 1945, a bomb was dropped on the city of Hiroshima, a civilian target. No warning was given and there was total devastation. Almost all the buildings were destroyed and more than 100000 people died or were horribly wounded.
The Japanese military still did not want to surrender so three days later, the Americans dropped a second atomic bomb on the city of Nagasaki, killing 45000 people. The Japanese government was discussing ending the war when they heard the news of Nagasaki. Finally, they surrendered and the World War II came to an end.
At first, the scientists who had built the bomb were pleased that it had helped to end the war. However, many would come to realize that they had helped to create the most terrible weapon known to man.
The first atomic bomb ______.
A.was less powerful
B.was dropped in Nagasaki
C.was a failure
D.was tested in desert
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Mr. Mufti always_______ us that a seemingly slight matter can have a significant impact on the total status of our division.
A.explains
B.claims
C.mentions
D.reminds
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Tile media can impact current events. As a graduate student at Berkeley in the 1960s, I re member experiencing the events related to the People's Park that were occurring on campus. Some of these events were given national media coverage in the press and on TV. I found it interesting to compare my impression of what was going on with perceptions obtained from the news media.I could begin to see events of that time feed on news coverage. This also provided me with some healthy insights into the distinctions between these realities.
Electronic media are having a greater impact on the people's lives every day. People gather more and more of their impressions from representations. Television and telephone communications are linking people to a global village, or what one writer calls the electronic city. Consider the information that television brings into your home every day. Consider also the contact you have with others simply by using telephone. These media extend your consciousness and your contact. For example, the video coverage of the 1989 San Francisco earthquake focused on "live action" such as the fires or the rescue efforts. This gave the viewer the impression of total disaster. Television coverage of the Iraqi War also developed an immediacy. CNN reported events as they happened.This coverage was distributed worldwide. Although most people were far away from these events, they developed some perception of these realities.
In 1992, many people watched in horror as riots broke out on a sad Wednesday evening in Los Angeles, seemingly fed by video coverage from helicopters. This event was triggered by the verdict (裁定) in the Rodney King beating. We are now in an age where the public can have access to information that enables it to make its own judgements, and most people, who had seen the video of this beating, could not understand how the jury (陪审团) was able to acquit (宣布……无罪) the policemen involved.Media coverage of events as they occur also provides powerful feedback that influences events. This can have harmful results, as it seemed on that Wednesday night in Los Angeles. By Friday night the public got to see Rodney King on television plea ding, "Can we all get along?" By Saturday, television seemed to provide positive feedback as the Los Angeles riot turned out into a rally for peace. The television showed thousands of people marching with banners and cleaning tools. Because of that, many more people turned out to join the peaceful event they saw unfolding on television. The real healing, of course, will take much longer, but electronic media will continue to be a part of that process.
The best title for the passage is______.
A.The 1992 Los Angeles Riots
B.The Impact of Media on Current Events
C.The 1989 San Francisco Earthquake and the 1992 Los Angeles Riots
D.How Media Cover Events
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There's no question that the ads had a real impact on the public.
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By saying that the "blast wave" from the explosion acts like "an invisible wall of energy", the author intends to say that ______.
A.blast can cause shrapnel or other bits of metal to slice through flesh like a knife
B.its energy can cause a swath of disfiguring burns
C.this energy wall can prevent victims from physical injury and obvious bleeding
D.its tremendous energy can inflict massive internal injuries
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Claire Jones, CFA, is an analyst following natural gas companies in the United States. At an industry energy conference, the chief financial officer of Alpine Energy states that the company is interes
A、Yes,Jones recommendation is based on insider information
B、No
C、Yes,both Jones and Wong have acted on insider information
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The fixed exchange rate system can isolate the impact of external economic shocks()
是
否
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Jeanne is the administrator of a very large e-commerce site.She notices that the site still contains many hypertext links to pages that were deleted from the site.What can Jeanne do to minimize customer impact of this oversight?()
A.Restrict access to pages that have broken links
B.Design a custom 404 error message page with a hyperlink that sends users back to the site
C.Set HTTP so it never redirects to error pages
D.Design a Multipurpose Internet Mail Extensions (MIME) type to solve the problem
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To mitigate the impact of a software vendor going out of business, a company that uses
A.Detailed credit investigation prior to acquisition.
B.Source code held in escrow.
C.Standby contracts with other vendors.
D.Substantial penalties for breech of contract.