题目内容

阅读下面这篇短文,短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为规定段每段选择1个正确的小标题;(2)第27~30题要求从所给的6个选项中选择4个正确选项,分别完成每个句子。 There are now over 700 million motor vehicles in the world-and the number is rising by more than 40 million each year. The average distance driven by car users is growing too-from 8 km a day per person in western Europe in 1965 to 25 km a day in 1995. This dependence on motor vehicles had given rise to major problems, including environmental pollution, depletion of oil resources, traffic congestion and safety.2. Until a hundred years ago, most journeys were in the 20 km range, the distance conveniently accessible by horse. Heavy freight could only be carried by water or rail. The invention of the motor vehicle brought personal mobility to the masses and made rapid freight delivery possible over a much wider area. Today 90 per cent of inland freight in the United Kingdom is carried by road. Clearly the world cannot revert to the horse-drawn wagon. Can it avoid being locked into congested and pollution ways of transporting people and goods3. In Europe most cities are still designed for the old modes of transport. Adaptation to the motor car has involved adding ring roads, one-way systems and parking lots. In the United States, more land is assigned to car use than to housing. Urban sprawl means that life without a car is nest to impossible. Mass use of motor vehicles has also killed or injured millions of people. Other social effects have been blamed on the car such as alienation and aggressive human behaviour.4. A 1993 study by the European Federation for Transport and Environment found that car transport is seven times as costly as rail travel in terms of he external social costs it entails such as congestion, accidents, pollution, loss of cropland and natural habitats, depletion of oil resources, and so on. Yet cars easily surpass trains or buses as a flexible and convenient mode of personal transport. It is unrealistic to expect people to give up private cars in favour of mass transit.5. Technical solutions can reduce the pollution problem and increase the fuel efficiency of engines. But fuel consumption and exhaust emissions depend on which cars are preferred by customers and how they are driven. Many people buy larger cars than they need for daily purposes or waste fuel by driving aggressively. Besides, global car use is increasing at a faster rate than the improvement in emissions and fuel efficiency which technology is now making possible.6. A more likely scenario seems to be a combination of mass transit systems for travel into and around cities. With small "low emission" cars for urban use and larger hybrid or lean burn cars for use elsewhere. Electronically tolled highways might be used to ensure that drivers pay charges geared to actual road use. Better integration of transport systems is also highly desirable-and made more feasible by modern computers. But these are solutions for countries which can afford them. In most developing countries, old cars and old technologies continue to predominate. Paragraph 4 ______

查看答案
更多问题

ABC会计师事务所接受委托,对甲公司20×9年度财务报表进行审计。A注册会计师为甲公司年报审计的项目负责人,根据审计业务的要求,组建了甲公司审计项目组。假定存在下列情形:(1) A注册会计师与甲公司副总经理同为油画爱好者,经其介绍,A注册会计师从其他企业筹得款项,成功举办个人油画展;(2) 审计项目组成员B与甲公司后勤处处长是战友,在年底审计的时候将甲公司职工年终福利一台进口彩电赠送给了B;(3) A注册会计师的岳父于20x8年购买甲公司发行的公司债券,面值2000元,即将到期;(4) ABC会计师事务所合伙人C不属于项目组成员,其妻子继承父亲遗产,其中包括甲公司内部职工股20000股;(5) 审计项目组成员D与甲公司财务总监王总从小学到大学一直是同班同学;(6) ABC会计师事务所原人事部经理E于20×5年10月离开事务所,担任甲公司人事总监。要求: 针对(5)事项,指出是否对审计项目组的独立性构成不利影响,并简要说明理由。

第二篇 The use of heat pumps has been held back largely by skepticism about advertisers’ claims that heat pumps can provide as many as two units of thermal energy for each unit of electrical energy used, thus apparently contradicting the principle of energy conservation. Heat pumps circulate a fluid refrigerant(致冷剂) that cycles alternatively from its liquid phase to its vapor phase in a closed loop. The refrigerant, starting as a low-temperature, lowpressure vapor, enters a compressor ’driven by an electric motor. The refrigerant leaves the compressor as a hot, dense vapor and flows through a heat exchanger called the condenser, which transfers heat from the refrigerant to a body of air. Now the refrigerant, as a high-pressure, cooled liquid confronts a flow restriction which causes the pressure to drop. As the pressure falls, the refrigerant expands and partially vaporizes, becoming chilled. It then passes through a second heat exchanger, the evaporator, which transfers heat from the air to the refrigerant, reducing the temperature o{ this second body of air. Of the two heat exchangers, one is located inside, and the other one outside the house, so each is in contact with a different body of air: room air and outside air, respectively. The flow direction of refrigerant through a heat pump is controlled by valves. When the refrigerant flow is reversed, the heat exchangers switch function. This flow-reversal capability allows heat exchangers switch function. This flow-reversal capability allows heat pumps either to heat or cool room air. Now, if under certain conditions a heat pump puts out more thermal energy than it consumes in electrical energy, has the law of energy conservation been challenged No, not even remotely: the additional input of thermal energy into the circulating refrigerant via the evaporator accounts for the difference in the energy equation. Unfortunately, there is one real problem. The heating capacity of a heat pump decreases as the outdoor temperature falls. The drop in capacity is caused by the lessening amount of refrigerant mass moved through the compressor at one time. The heating capacity is proportional to this mass flow rate: the less the mass of refrigerant being compressed, the less the thermal load it can transfer through the heat-pump cycle. The volume {low rate of refrigerant vapor through the single-speed rotary compressor used in heat pumps is approximately constant. But cold refrigerant vapor entering a compressor is at lower pressure than warmer vapor. Therefore, the mass of cold refrigerant—and thus the thermal energy it carries—is less than ii the refrigerant vapor were warmer before compression. Here, then, lies a genuine drawback of heat pumps: in extremely cold climates—where the most heat is needed—heat pumps are least able to supply enough heat. It can be inferred from the passage that, in the course of a heating season, the heating capacity of a heat pump is greatest when ______.

A. heating is least essential
B. electricity rates are lowest
C. its compressor runs the fastest
D. outdoor temperatures hold steady

对于给定的一组关键字(12,2,16,30,8,28,4,10,20,6,18),按照下列算法进行递增排序,写出每种算法第一趟排序后得到的结果:希尔排序(增量为5)得到 (67) ,快速排序(选第一个记录为基准元素)得到 (68) ,链式基数(基数为10排)序得到 (69) ,二路归并排序得到 (70) ,堆排序得到 (71) 。 (68)处填()。

A. 10,6,18,8,4,2,12,20,16,30,28
B. 6,2,10,4,8,12,28,30,20,16,10
C. 2,4,6,8,10,12,16,18,20,28,30
D. 6,10,8,28,20,18,2,4,12,30,16

阅读下面这篇短文,短文后有2项测试任务:(1)第23~26题要求从所给的6个选项中为规定段每段选择1个正确的小标题;(2)第27~30题要求从所给的6个选项中选择4个正确选项,分别完成每个句子。 There are now over 700 million motor vehicles in the world-and the number is rising by more than 40 million each year. The average distance driven by car users is growing too-from 8 km a day per person in western Europe in 1965 to 25 km a day in 1995. This dependence on motor vehicles had given rise to major problems, including environmental pollution, depletion of oil resources, traffic congestion and safety.2. Until a hundred years ago, most journeys were in the 20 km range, the distance conveniently accessible by horse. Heavy freight could only be carried by water or rail. The invention of the motor vehicle brought personal mobility to the masses and made rapid freight delivery possible over a much wider area. Today 90 per cent of inland freight in the United Kingdom is carried by road. Clearly the world cannot revert to the horse-drawn wagon. Can it avoid being locked into congested and pollution ways of transporting people and goods3. In Europe most cities are still designed for the old modes of transport. Adaptation to the motor car has involved adding ring roads, one-way systems and parking lots. In the United States, more land is assigned to car use than to housing. Urban sprawl means that life without a car is nest to impossible. Mass use of motor vehicles has also killed or injured millions of people. Other social effects have been blamed on the car such as alienation and aggressive human behaviour.4. A 1993 study by the European Federation for Transport and Environment found that car transport is seven times as costly as rail travel in terms of he external social costs it entails such as congestion, accidents, pollution, loss of cropland and natural habitats, depletion of oil resources, and so on. Yet cars easily surpass trains or buses as a flexible and convenient mode of personal transport. It is unrealistic to expect people to give up private cars in favour of mass transit.5. Technical solutions can reduce the pollution problem and increase the fuel efficiency of engines. But fuel consumption and exhaust emissions depend on which cars are preferred by customers and how they are driven. Many people buy larger cars than they need for daily purposes or waste fuel by driving aggressively. Besides, global car use is increasing at a faster rate than the improvement in emissions and fuel efficiency which technology is now making possible.6. A more likely scenario seems to be a combination of mass transit systems for travel into and around cities. With small "low emission" cars for urban use and larger hybrid or lean burn cars for use elsewhere. Electronically tolled highways might be used to ensure that drivers pay charges geared to actual road use. Better integration of transport systems is also highly desirable-and made more feasible by modern computers. But these are solutions for countries which can afford them. In most developing countries, old cars and old technologies continue to predominate. Most European cities were no[ designed ______

答案查题题库