The distinction between passbook savings deposits and time deposits is that______.

A . Only symmetric algorithms have a key exchange technology built in B . Asymmetric algorithms are used quite often as key exchange protocols for symmetricalgorithms C . Only asymmetric algorithms have a key exchange technology built in D . Asymmetric algorithms are based on more complex mathematical computatio

A . A routing protocol is assigned to an interface and determines the method of packet delivery. B . A routed protocol is assigned to an interface and determines the method of packet delivery. C . A routing protocol determines the path of a packet through a network. D . A routed protocol determines the path of a packet through a network. E . A routing protocol operates at the transport layer of the OSI model. F . A routed protocol updates the routing table of a router.

A . 正确 B . 错误

A . respectable B . respectful C . respective D . respectively

A．Holliday． B．Chomsky． C．Bloomfiel D．Saussur

A．Private-sector work involves a lesser degree of immigrant competition than public-sector work. B．A growing educational level has assisted African Americans find work in the private-sector more than it has done so in the public-sector. C．Immigrant population gains have benefited workers in the public-sector more than they have workers in the private-sector. D．Private-sector work often requires less in the way of educational credentials than public-sector work. E．The private-sector tends to contain stronger ethnic networks than the public sector.

A．new B．simple C．different D．exact

In the field of marketing, consumer goods are classed according to the way in which they are purchased. The two main categories are convenience goods and shopping goods. Two lesser types are specialty goods and unsought goods. It must be emphasized that all of these types are based on the way shoppers think about products, not on the nature of the products themselves. What is regarded as a convenience item in France(wine, for example) may be a specialty goods in the United States. People do not spend a great deal of time shopping for such convenience items as groceries, newspapers, toothpaste, razor blades, aspirin, and candy. The buying of convenience goods may be done routinely, as some families buy groceries once a week. Such regularly purchased items are called staples. Sometimes convenience products are bought on impulse: someone has a sudden desire for an ice cream on a hot day. Or they may be purchased as emergency items. Shopping goods are items for which customers search. They compare prices, quality, and styles, and may visit a number of stores be fore making a decision. Buying an automobile is often done this way. Shopping goods fall into two classes: those that are perceived as basically the same and those that are regarded as different. Items that are looked upon as basically the same, include such things as home appliances, television sets, and automobiles. Having decided on the model desired, the customer, is primarily interested in getting the item at the most favorable price. Items regarded as inherently different include clothing, furniture, and dishes. Quality, style, and fashion will either take precedence over price, or they will not matter at all. Specialty goods have characteristics that impel customers to make special efforts to find them. Price may be no consideration at all. Specialty goods can include almost any kind of product. Normally, specialty goods have a brand name or other distinguishing characteristics. Unsought goods are items a consumer does not necessarily want or need or may not even know about. Promotion or advertising brings such goods to the consumer's attention. The product could be something new on the market as the Sony Walkman once was or it may be a fairly standard service, such as life insurance, for which most people will usually not bother shopping. A word processor can be looked on as satisfying a need rather than a want if ______. A．it is used at home to do paper work B．it is used by a writer to type a novel C．it becomes the only means to an end D．a writer does not want to use it

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

是 否

A．They represent the unique strengths of the company B．They refer to company strengths that competitors cannot easily match or imitate C．They form the bedrock of a company’s strategy D．They can be based in any of the value creation functions of the company E．They are shared by many firms in an industry

A．competence and performance B．comparative linguistics and historical linguistics C．langue and parole D．microlinguistics and macrolinguistics