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【单选题】
There are several advantages in making computers as small as one can. Sometimes weight is particularly important. A modern aircraft, for example, carries quite a load of electronic apparatus. If it is possible to make any of these smaller, and therefore lighter, the aircraft can carry a bigger pay-load. This kind of consideration applies to space satellites and to all kinds of computers that have to be carried about. But weight is not the only factor. The smaller the computer the faster it can work. The signals go to and fro at a very high but almost constant speed. So if one can scale down all dimensions to, let us say, one tenth, the average lengths of the current-paths will be reduced to one tenth. So, very roughly speaking, scaling down of all linear dimensions in the ratio of one to ten also gives a valuable bonus: the speed of operation is scaled up 10 times. Other techniques allow even further speed increases. This increase of operation is a real advantage. There are some applications in which computers could be used which require very fast response times. Many of these are military, of course but military applications also have applications in engineering sooner or later. For example, automatic blind landing of aircraft requires continuous computer calculations which result in control of the aircraft flight. The more immediate the responses are, the more stable that control can be. Another advantage is that less power is required to run the computer. In space vehicles and satellites this is an important matter but even in a trial application we need not waste power. Sometimes a computer takes so much power that cooling systems which require still more power have to be installed to keep the computer from getting too hot, which would increase the risk of faults developing. So a computer which does not need to be cooled saves power on two counts. Another advantage is reliability. Mini-computers have been made possible by the development of integrated circuits. Instead of soldering bits of wire to join separate components such as resistors and capacitors sometimes in the most intricate networks, designers can now produce many connected circuits in one unit which involves no soldering and therefore no risk of broken joints at all. Which of the following is NOT one of the advantages of mini-computers?
A.
The increase of operation speed.
B.
The decrease of power needed.
C.
The development integrated circuits.
D.
Their reliability.
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【单选题】( )指得体的语言、姿态和表情能够在沟通中给对方留下良好的第一印象甚至可产生移情作用,有利于沟通目标的实现。
A.
情绪
B.
礼貌
C.
简洁
D.
准确
【单选题】Which of the following is 对 of business markets?
A.
The business marketer normally deals with far more but far smaller buyers than the consumer marketer does.
B.
Business markets generally involve far less money and items than do consumer markets.
C.
Business demand is derived demand as it ultimately derives from the demand for consumer goods.
D.
A small percentage decrease in consumer demand can cause a large increase in business demand.
E.
The total demand for business products is much affected by price changes in the short run.
【简答题】接触式测量方法对被测对象的性质有干扰,影响测量结果的精确性,适用于_______或运动速度缓慢的物质参数测量。
【单选题】姿态和表情能够在沟通中给对方留下良好的第一印象甚至可产生移情作用,有利于沟通目标的实现。
A.
情绪
B.
礼貌
C.
简洁
D.
准确
【判断题】依据《税收征管法》规定,税务机关是发票主管机关,负责发票的印刷、领购、开具、取得、保管、缴销的管理和监督。
A.
正确
B.
错误
【单选题】With the fragmentation of consumer and business markets ( ).
A.
an increasing number of companies have disintegrated
B.
manufacturers must focus on one special product to remain competitive in the market
C.
it is physically impossible and prohibitively expensive to do business in the old way
D.
businesses have to meet individual customers’ specific needs in order to succeed
【单选题】依据《税收征管法》规定,财政机关和税务机关是发票主管机关,但增值税专用发票必须由主管税务机关进行监督管理。( )
A.
正确
B.
错误
【单选题】Which of the following is true of business markets?
A.
Buyers are usually not skilled at comparing competitive product offerings.
B.
Buyers have limited purchasing power.
C.
Property rights, language, culture, and local laws are the most important concerns.
D.
Products sold in such markets are usually highly standardized.
E.
Business buyers purchase goods to make or resell a product to others at a profit.
【判断题】由于气流分离是因为气流的逆压梯度过大导致上翼面气流发生倒流,因此,气流的分离点一定位于最低压力点之后。
A.
正确
B.
错误
【简答题】2018年7月22日,总理就疫苗事件作出重要批示: 此次疫苗事件突破人的____ ,必须给全国人民一个明明白白的交代。
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