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A new technique(),the producity of loading as a whole increased by 20 percent.
A . working out
B . having been worked out
C . having worked out
D . to have been worked out
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In today’s practice, with cylinders of equal diameter of bore and equal revolutions, the two-cycle engine delivers a power about 80 percent () than that of the four-stroke one.
A . greater
B . better
C . smaller
D . le
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Which of the following statements is true about the 80/20 rule (Select all that apply)?()
A . 20 percent of the traffic on a network segment should be local.
B . no more than 20 percent of the network traffic should be able to move across a backbone.
C . no more than 80 percent of the network traffic should be able to move across a backbone.
D . 80 percent of the traffic on a network segment should be local.
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A recent ________ was that about 20 per cent of college graduates joined the army of the unemployed last year.
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he common stock of the Zing Co. is selling for $37.31 a share and offers a 7.5 percent rate of return.The dividendgrowth rate is constant at 3 percent. What is the amount of the last annualdividend paid?
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The overall literacy rate of Cambodians is about percent.
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The risk-free rate of returnis 4.5 percent and the market risk premium is 8 percent. What is the expected return for a stock with a beta of 1.32?
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Organized exchanges account for about _________ percent of the total dollar volume of domestic stocks traded.
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With the miniaturization(缩小) of the structural components the weight of these electric devices has decreased_30 percent.
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The 20 - year average return of venture capital firms has been about _________.
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The poorest 20 percent of the world’s people recently earned ____________ of total world income.
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The cost is going up for just about everything, and college tuition is no exception. According to a nation- wide survey【21】by the College Board's Scholarship Service,【22】at most American universities will be【23】of 9 percent higher this year over last.
The biggest increase will occur at private colleges. Public colleges, heavily subsidized by rax funds, will also【24】their tuition, but the increase will be a few percentage points【25】than their privately sponsored neighbors.
As a follow-up, the United Press international did their own study【26】Massachussetts Institute of Technology. At M. I. T. advisors recommended that students have $ 8,900【27】for one year's expenses, including $ 5,300 for tuition, $ 2,685 for room and【28】, $ 630 for personal expenses, and $ 285 for books and supplies. Ten years ago the tuition was only $ 2,150. To【29】that another way, the cost has climbed 150 percent in the last【30】.
(61)
A.published
B.declared
C.written
D.quoted
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What percent of the students polled chose Spartans in the poll?
A.40%
B.30%
C.25%
D.20%
E.15%
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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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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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The United States has historically had higher rates of marriage than those of other industrialized countries. The current annual marriage 【B1】______ in the United States--about 9 new marriages for every 1,000 people--is 【B2】______ higher than it is in other industrialized countries. However, marriage is 【B3】______ as widespread as it was several decades ago. 【B4】______ of American adults who are married 【B5】______ from 72 percent in 1970 to 60 percent in 2002. This does not mean that large numbers of people will remain unmarried 【B6】______ their lives. Throughout the 20th century, about 90 percent of Americans married at some 【B7】______ in their lives. Experts 【B8】______ that about the same proportion of today's young adults will eventually marry.
The timing of marriage has varied 【B9】______ over the past century. In 1995 the average age of women in the United States at the time of their first marriage was 25. The average age of men was about 27. Men and women in the United States marry for the first time an average of five years later than people did in the 1950s. 【B10】______ , young adults of the 1950s married younger than did any previous 【B11】______ in U.S. history. Today's later age of marriage is 【B12】______ the age of marriage between 1890 and 1940. Moreover, a greater proportion of the population was married (95 percent) during the 1950s than at any time before 【B13】______ . Experts do not agree on why the "marriage rush" of the late 1940s and 1950s occurred, but most social scientists believe it represented a 【B14】______ to the return of peaceful and prosperity after 15 years of severe economic 【B15】______ and war.
【B1】______
A.rate
B.ratio
C.percentage
D.poll
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One hundred boys went on a school outing. Eighty-one percent of the boys lost a shoe, 82 percent of the boys lost a sock, 77 percent of the boys lost a handkerchief and 68 percent of the boys lost a hat.
What is the minimum percentage who lost all 4 items?
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According to the International Bank for Reconstruction and Development in 1995, the wealthiest 10 percent of China's population received 9 percent of the income, while the poorest 10 percent received only 2 percent. Such ______ in income and wealth are found in both cities and rural areas.
A.identicalness
B.disparities
C.egalitarianism
D.curmudgeons
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The total area of land on earth is about 149 million square kilometers, or about 29 percent of the total area of the earth.
The average height of the land is about 750 metres above the sea level. The Eurasian(欧亚大陆的) land mass is the largest with an area of 54,527,600 square kilometers. The smallest continent is the Australian mainland, with an area of about 7,614,600 square kilometers, which together with Tasmania, New Zealand, New Guinea and the Pacific Islands, is described as Oceania.The total area of Oceania is about 8,935,500 square kilometres, including West Iran which is political in Asia.
The world's largest peninsula(半岛) is Arabia, with an area of about 3,327,500 square kilometres. The largest island in the world is Greenland, with an area of about 2,175,600 square kilometres.
The largest island surrounded by fresh water is the Ilha de Marajo (4,022 square kilometres) in the mouth of the Amazon River, Brazil. The largest island in a lake is Manitoulin Island (2,766 square kilometres) in the Canadian section of Lake Huron. This island itself has on it a lake of 106 square kilometres called Manitou Lake, in which there are several islands.
1)、The total area of the world is about 211 million square kilometers.
A.T
B.F
2)、The area of Tasmania, New Zealand, New Guinea and the Pacific Islands adds up to about 1,320,900 square kilometres.
A.T
B.F
3)、Oceania is made up of Australia, New Guinea and the Pacific Islands.
A.T
B.F
4)、As mentioned in the passage there are several islands in Manitou Lake.
A.T
B.F
5)、The largest island surrounded by fresh water is in a river.
A.T
B.F
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The price of an article of clothing was reduced from $25 to $20. The reduced price of the article was then increased by x percent to return it to $ 25.
Column A Column B
x 20
A.if the quantity in Column A is greater
B.if the quantity in Column B is greater
C.if the two quantity are equal
D.if the relationship cannot be determined from the information given
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John House has taken a $250,000 mortgage on his house at an interest rate of 6 percent per year. If the mortgage calls for 20 equal annual payments, what is the amount of each payment()
A.$21,796.14
B.$10,500.00
C.$16,882.43
D.$24,327
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An investor is considering two investments. Stock A has a mean annual return of 16 percent and a standard deviation of 14 percent. Stock B has a mean annual return of 20 percent and a standard deviation of 30 percent. Calculate the coefficient of variation (CV) of each stock. Which of the following statements is TRUE?
A.Stock A (CV = 0.875) has more dispersion relative to the mean than stock B.
B.Stock A (CV = 0.875) has less dispersion relative to the mean than stock B.
C.Stock A (CV 1.14) has more dispersion relative to the mean than stock B.
D.Stock A (CV 1.14) has less dispersion relative to the mean than stock B.
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Twenty percent of the teachers in our school are()
A.woman teachers
B.womens’ teachers
C.women teachers
D.woman’s teachers
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When a stock dividend is less than 20-25 percent of the common stock outstanding, a company is required to transfer the fair market value of the stock issued from retained earnings.()
此题为判断题(对,错)。