判断题After the exclusive distributor has purchased the goods, the actual buyer shall open an UC.

判断题A force majeure event should be verified by a certificate that attests such an event. But the issuer of the certificate need not be mentioned in the clause.

判断题The commencement and termination of War insurance are usually stipulated by adopting the customary W/W clause.

判断题The exclusive sales agreement is the agreement that stipulates the rights and obligations between the seller and the exclusive distributor.

判断题Documentary collection means collection of financial documents accompanied by commercial documents, or financial documents not accompanied by commercial documents . ( )

判断题Migration is usually defined as "permanent or semi-permanent change of residence". However our concern is with movement between nations, not with internal migration within nations, although such movements often exceed international movements in volume. Today, the motives of people who move short distances are very similar to those of international migrants. Students of human migration speak of "push" and "pull" factors, which influence an individual's decision to move from one place to another. Push factors are associated with the place of origin. A push factor can be as simple and mild a matter as difficulty in finding a suitable job, or as traumatic as war, or severe famine. Obviously, refugees who leave their homes with guns pointed at their heads are motivated almost entirely by push factors (although pull factors do influence their choice of destination). Pull factors are those associated with the place of destination. Most often these are economic, such as better job opportunities or the availability of good land to farm. In general, pull factors add up to an apparently better chance for a good life and material well-being than is offered by the place of origin. When there is a choice between several attractive potential destinations, the deciding factor might be a non-economic consideration such as the presence of relatives, friends, or at least fellow countrymen already established in the new place who are willing to help the newcomers settle in. Besides push and pull factors, there are what the sociologists call "intervening obstacles". Even if push and (or) pull factors are very strong they still may be outweighed by intervening obstacles, such as the distance of the move, the trouble and cost of moving, the difficulty of entering the new country, and the problems likely to be encountered on arrival. The decision to move is also influenced by "personal factors" of the potential migrant. The prospect of packing up everything and moving to a new and perhaps very strange environment may appear interesting and challenging to an unmarried young man and appallingly difficult to a slightly older man with a wife arid small kids. Similarly, the need to learn a new language and customs may excite one person and frighten another. Regardless of why people move, migration of large numbers of people causes conflict. The United States and other western countries have experienced adjustment problems with each new wave of immigrants. It has usually taken several decades for each group to be accepted into the mainstream of society in the host country.

判断题Commodity inspections usually involve quality

判断题 Tipping is a subject that has long interested and irritated me. Many people think that the word "tip" is an acronym for "To insure promptness." However, this is not possible, I think. Since the practice of tipping began in England in the Middle Ages, scholars have not been able to find any acronyms much earlier than the 20th century. Most scholars track the word "tip" back to the early 1600s, where it originated as criminal slang. It referred to inside information. Therefore, to give another criminal a tip was to give something valuable (information) The word gradually evolved to the point where, in the late 1700s, it meant to give a monetary gratuity(tip) to someone for service performed. That's where it stayed until the English immigrated to North America. In America, the three basic occupations that require tipping are waiters/waitresses, taxi drivers, and barbers. The standard tip is now between 15 and 20 percent of the bill, depending on the quality of service. Why these three particular services deserve this special treatment is a mystery to me. Why am I supposed to tip a waiter for bringing me food when I'm not expected to tip the flight attendant on an airplane for doing the same thing? Why am I supposed to tip a cab driver, but I'm not expected to tip the bus driver? Why am I supposed to tip the barber for cutting my hair but not the dentist for fixing my teeth? I have been a teacher for 39 years. No one has ever tipped me after a particularly successful class or lecture. The whole concept of tipping doesn't make any sense. I have heard that there are some exclusive and expensive restaurants in major cities in the US where the restaurant does not give the waiters any salary at all due to the large amounts of the tips. In fact, in some instances, I read that the waiters actually pay the restaurant a small fee for the opportunity to collect the large tips. Also, I was quite surprised to learn that there was actually a website devoted to tipping and related issues(http://www.tipping.org). Some of the invisible and illogical rules of this practice are close to ridiculous. The tipping problem in many European countries is solved by automatically adding a 15 percent gratuity to the bill, I prefer the Chinese solution: no tipping at all. While I understand why China, as a developing nation, has adopted many western customs, I hope the Chinese are wise enough to never start the unnecessary practice of tipping. The level of service in China is already good enough that it doesn't need anything to make it better.

判断题Virtual reality will improve with the development of computers.

判断题VR can be made better uses on networks in the future.

判断题Generally speaking

判断题The purpose of artificial intelligence is to find out how intelligent human beings can be.

判断题If you install powerful firewalls

判断题According to international trade practice

判断题The most noticeable trend among media companies is vertical integration—an attempt to control several related aspects of the media business at once, each part helping the other. Besides publishing magazines and books, Time Warner, for example, owns Home Box Office (HBO), Warner movie studios, various cable TV systems throughout the United States and CNN as well. The Japanese company Matsushita owns MCA Records and Universal Studios and manufactures broadcast production equipment. To describe the financial status of today's media is also to talk about acquisitions (并购). The media are buying and selling each other in unprecedented numbers and forming media groups to position themselves in the marketplace to maintain and increase their profits. In 1986, the first time a broadcast network had been sold; two networks were sold that year— ABC and NBC. Media acquisitions have skyrocketed(剧增) since 1980 for two reasons. The first is that most big corporations today are publicly traded companies, which means that their stock is traded on one of the nation's stock exchanges. This makes acquisitions relatively easy. A media company that wants to buy a publicly owned company can buy that company's stock when the stock becomes available. The open availability of stock in these companies means that anybody with enough money can invest in the American media industries, which is exactly how Rupert Murdoch joined the media business. The second reason for the increase in media alliances is that beginning in 1980, the Federal Communications Commission (FCC) gradually deregulated (除管制) the broadcast media. Before 1980, for example, the FCC allowed one company to own only five TV stations, five AM radio stations, and five FM radio stations; companies also were required to hold onto a station for three years before the station could be sold. The post-1980 FCC eliminated the three-year rule and raised the number of broadcast holdings allowed for one owner. This trend of media acquisitions is continuing throughout the 1990s, as changing technology expands the market for media products. The issue of media ownership is important. If only a few corporations direct the media industries in this country, the outlets for differing political viewpoints and innovative ideas could be limited.

判断题A database management system (DBMS) is an extremely complex set of software programs that controls the organization, storage and retrieval of data (fields, records and files) in a database.

判断题Online advertising companies use Web bugs to collect personal data.

判断题According to the text

判断题1．It is unimaginable to do research nowadays without the help of a computer.