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TY-220型推煤机发动机型号（）。
A . 卡明斯NT855，C280
B . 卡明斯NT955，C280
C . 卡明斯NT655，280
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推土机的型号为TY100，表示（）
A . 100马力的液压轮胎式推土机
B . 100马力的机械操纵轮胎式推土机
C . 100马力的机械操纵履带式推土机
D . 100马力的液压履带式推土机
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TY220推煤机的主要组成有哪些？
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Most drill ships and barges have a walled opening below the derrick，open to the water’s surface and through which various drilling tools can pass down to the sea floor called a （）.
A . moon pool
B . spider deck opening
C . pontoon
D . keyway
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若使用5期简单移动平均方法预测序列的发展，则二期预测值ˆ（2）TY的表达式中TY的系数为（）。
A . 4/25
B . -1/5
C . 6/25
D . 7/25
E . 8/25
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When stand-by engine instructions have been received, it’s necessary to make it sure that all valves in the various systems are（）
A . operational
B . open
C . closed securely
D . at middle positio
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Different economic life and religions and the influence of the “Silk Road” commercial culture were embodied in __________ and have been preserved in today’s folk dance and become various performing forms.
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People have been having various kinds of marriage ceremony ever since people first lived on earth.
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According to what you have learned in the course, which one is NOT one of the various sayings concerning the origin of Chinese characters?
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Different economic life and religions and the influence of the “Silk Road” commercial culture were embodied in __________ and have been preserved in today’s folk dance and become various performing forms.
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Touch usually gives rise to various feelings: the perception of ________, ____, ____ and sometimes _____. Therefore, different people might have ________ feelings about the _____ touch.
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Various researches have determined thatthe biggest wave load appears when awave length is _____ the ship’s length.
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3.Various times in America’s history have seen the revival of folk music and in the 1990s, when rock and country combined with folk music to create a new genre, called _______.
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These data of physical fitness have been collected from various sources. ( )
different
existent
traditional
original
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Opinion polls repeatedly tell us that the only thing Americans worry about more than the environment is their health. This is【B1】understandable, for health is obviously【B2】to illness. What makes today's concern【B3】health slightly surprising is that Americans are【B4】healthier now than they. have ever been. Many diseases that once【B5】terror into hearts have either been completely【B6】or brought under control. Although AIDS is a notable【B7】, few new mass killers have come out to【B8】the ones that have been eliminated.【B9】, health—and the various threats to it—remains everyone's【B10】concern. After all, more than half of us(57 percent) will die from either heart disease or cancer, if current【B11】continues.
One major problem with any【B12】of health risks—especially life-threatening ones is that they【B13】enormously in their immediacy. For instance, AIDS If you get it—will probably be【B14】after a number of years. Cancer induced by smoking or【B15】to radiation, on the other hand, may take 20 to 30 years【B16】its fatal effects show【B17】. In making choices about health risks,【B18】, it is important to bear in【B19】the likely time lag between taking a risk and【B20】its consequences.
【B1】
A．entirely
B．chiefly
C．exclusively
D．mostly
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Many changes are taking place in "food style" in the United States. The United States is traditionally famous【36】its very solid and unchanging diet of meat and potatoes. Now we have many【37】alternatives to choose from various ethnic (民族特色的) food, health food, and fast food, in addition to the traditional home-cooked meal.
Ethnic restaurants and supermarkets are commonplace in the United States. Since the United States is a country of immigrants, there is a great variety. Any large American city is filled with restaurants【38】international cooking. Many cities even have ethnic sections: Chinatown, Little Italy, or Germantown. With this vast ethnic choice, we can【39】food from all over the world. This is pleasant for those who come here to travel or to work; they can usually find their【40】specialties.
Health food gained popularity when people began to think more seriously about their physical well-being. Health food is fresh, natural, unprocessed food. It does not【41】preservatives to make it last longer or chemicals to make it taste or look【42】Some health food enthusiasts are vegetarians: They eat no meat; they prefer to get their【43】proteins from other sources, such as beans and rice, cheese and eggs. More and more people are eating healthy food and trying to eat less fat and red meat.
America's【44】toward meals is changing, too. The traditional big breakfast and dinner at 6:00 p.m. are losing popularity. People are rediscovering the social importance of tood. Dinner with family or friends is again becoming a very【45】way of enjoying and sharing. Like so many people in other cultures, many Americans are taking time to relax and enjoy the finer tastes at dinner, even if they still rush through lunch at a hamburger stand.
(36)
A．at
B．in
C．for
D．to
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Scientists have found various kinds of methods to solve the problem of global warming.
A．Y
B．N
C．NG
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听力原文：Man: In the company, I am in charge of recruitment; I have to meet various people. Some of them impressed me most at least the few days after we had the interview, because they are effective conversationalists. During the course of talk, half the responsibility lies with you. Leaving an interviewer indifferent is the worst impression you can make. And the way to make an effective impression is to feel free to be yourself.
&8226;You will hear five short recordings.
&8226;For each recording, decide who is speaking.
&8226;Write one letter (A--H) next to the number of the recording.
&8226;Do not use any letter more than once.
&8226;You will hear the five recordings twice.
A an undergraduate
B a parent
C a personnel executive
D a sociologist
E a consultant for job-seekers
F a radio journalist
G a psychologist
H a general manager
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In its various forms from fiction to documentary, the motion picture has become a significant element of contemporary culture. It is an art form. which【C1】______millions of people from all social classes. Movies have influenced current standards of beauty and have set dress fashions. They have【C2】______national myths. The American Western【C3】______in films, for example, is not really the frontier of historical fact. Movies have shown viewers other countries and broadened their【C4】______of different life-styles. But movies have also kept【C5】______stereotypes and prejudices. Some critics have【C6】______recent films of encouraging violence in American society. Others suggest that【C7】______violence in films helps antisocial viewers to safely rid themselves of aggressive feelings.
Interest【C8】______the relationship of films to American culture is as old as the interest in film【C9】______But interest in other【C10】______of film scholarship is more recent. During the 1960s, there was an【C11】______growth in the number and types of film classes offered in American colleges and universities. In other schools, students concentrate on learning【C12】______to make films. In many other schools, classes【C13】______with the history of film as an art form. and【C14】______the study, of film theory, and criticism. Film is【C15】______studied in more general courses in the humanities. Scholars now analyze the work of important directors. They examine the structures and conventions which create film groups or genres(流派)【C16】______the western and gangster(匪徒)films. Film study has become a【C17】______academic discipline.
Competing【C18】______television since the early 1950s, the American film industry has changed dramatically. So have films themselves. But whatever changes are brought【C19】______, motion pictures will always【C20】______an important American art form. and a significant cultural force.
【C1】
A．arrives
B．reaches
C．arouses
D．researches
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In any country the wages commanded by laborers who have comparable skills but who work in various industries are determined by the productivity of the least productive unit of labor, i.e., that unit of labor which works in the industry which has the greatest economic disadvantage. We will represent the various opportunities of employment in a country like the United States by symbols: A, standing for a group of industries in which we have exceptional, economic advantages over foreign countries; B, for a group in which our advantages are less; C, one in which they are still less; D, the group of industries in which they are least of all.
When our population is so small that all our labor can be engaged in the group represented by A, productivity of labor (and therefore wages) will be at their maximum. When our population increases so that some of the labor will have to be set to work in group B, the wages of all labor must decline to the level of the productivity in that group. But no employer, without government aid, will yet be able to afford to hire labor to exploit the opportunities represented by C and D, unless there is a further increase in population.
But suppose that the political party in power holds the belief that we should produce every thing that we consume, that the opportunities represented by C and D should be exploited. The commodities that the industries composing C and D will produce have been hitherto obtained from abroad in exchange for commodities produced by A and B. The government now renders this difficulty by placing high duties upon the former class of commodities. This meads that workers in A and B must pay higher prices for what they buy, but do not receive higher prices for what they sell.
After the duty has gone into effect and the prices of commodities that can be produced by C and D have risen sufficiently, enterprisers will be able to hire labor at the wages prevailing in A and B, and establish industries in C and D. So far as the remaining laborers in A and B buy the products of C and D, the difference between the price which they pay for those products and the price that they would pay if they were permitted to import those products duty-free is a tax paid not to the government, but to the producers in C and D, to enable the latter to remain in business. It is an uncompensated deduction from the natural earnings of the laborers in A and B. Nor are the workers in C and D paid as much, estimated in purchasing power, as they would have received if they had been allowed to remain in A and B under the earlier conditions.
When C and D are established, workers in these industries______.
A．receive higher wages than do the workers in A and B
B．receive lower wages than do the workers in A and B
C．are not affected so adversely by the levying of duties as are workers in A and B
D．receive wages equal to those workers in A and B
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The differences in relative growth of various areas of scientific research have several c
The differences in relative growth of various areas of scientific research have several causes. (1)Some of these causes are completely reasonable results of social needs.Others are reasonable consequences of particular advances in science being to som
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Your company manages the stock of various advertising articles on a quantity and value basis.In the future, you want to analyze the value of these advertising articles.Unfortunately, the articles have been created with different material types, material groups, valuation classes, and in different number range intervals.For this reason, you want to change the assignments.Which of the following changes are possible, even if stock exists for the articles？ Please choose the correct answer.()
A.You create a new valuation class and then change the valuation class of the advertising articles to the new valuation class
B.You create a new material type and then change the material type of the advertising articles to the new material type
C.You create a new material group and then change the material group of the advertising articles to the new material group
D.You create a new number range interval and then change the material numbers of the advertising articles to a number in the new number range interval
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The same one word may have more than one meaning. The various meanings of the word are related to some degree. This is what we call (). For example, the word table means a piece of furniture, and it may also mean all the people seated at a table.
A.polysemy
B.hyponymy
C.antonymy
D.homonymy
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Ever since humans have inhabited the earth, they have made use of various forms of communication. Generally, this expression of thoughts and feelings has been in the form. of oral speech. When there is a language barrier, communication is accomplished through sign language in which motions stand for letters, words and ideas. Tourists, the deaf, and the mute have had to resort to this form. of expression. Many of these symbols of whole words are very picturesque and exact and can be used internationally; spelling, however, cannot. Body language transmits ideas or thoughts by certain actions, either intentionally or unintentionally.. A wink can be a way of flirting or indicating that the party is only joking. A nod signifies approval, while shaking the head indicates a negative reaction.
Other forms of nonlinguistic language can be found in Braille (a system of raised dots read with the fingertips), signal flags, ,Morse code, and smoke signals. Road maps and picture signs also guide, warn, and instruct people. While verbalization is the most common form. of language, other systems and techniques also express human thoughts and feelings.
11. Which of the following best summarize this passage？ ()
A.When language is a barrier, people will find other forms of communication
B. Everybody uses only one form. of communication.
C. Nonlinguistic language is invaluable to foreigners
D. Although other forms of communication exist, verbalization is the fastest
12. Which of the following statements is NOT true according to the passage？ ()
A.There are many forms of communication in existence today
B. Verbalization is the most common form. of communication
C. The deaf and mute do not need sign language for communication
D. Ideas and thoughts can be transmitted by language
13. Which form. other than oral speech would be most commonly used among blind people？()
A.Picture sign
B. Braille
C. Body language
D. Signal flags
14. How many different forms of communication are mentioned here？()
A.2-4
B.5-7
C.8-10
D. over 10
15. Sign language is said to be very picturesque and exact and can be used internationally as it doesn ’ t represent ().
A.Spellings
B. whole words
C. ideas
D. feelings
