判断题Promissory notes can only be commercial notes

判断题The contract can be concluded by other forms besides the written form or oral form.

判断题According to the British Law

判断题6．Computers seem to be put to little use in private homes.

判断题Ⅰ．Too Many People Figures and numerous facts prove that there are already, and certainly that where will be, too many people. Simply calculating the lengths of time necessary to double the world's population is instructive. Impressively, the time required grows ever shorter: 6,000 years before Christ, 1,000,000 years were necessary to double the population, then about 1,650 years after Christ only 1,000 around the 1850's 200 years, in 1930's 80 years. Currently, the world's population doubles every 37 years. What would happen if the population were to continue doubling in volume every 37 years? According to recent calculations, maintaining such a rhythm of growth would result in 60 million billion people on the earth in 900 years, which represents 120 inhabitants per square meter. Optimists believe and often assert that science will indeed find solutions to the problem of overcrowding, namely by providing the means to immigrate to other planets. But this solution is totally impossible. In effect, even if it should become possible, 50 years would be sufficient for the 60 million billion persons to multiply to the point of populating Venus, Mercury, Mars, the Moon and the satellites of Jupiter and Saturn with a density equal to that of the Earth. Ⅱ．Food shortage Today, a good part of humanity suffers from malnutrition or from undernourishment. Some think that the recent scientific discoveries applied to agriculture and known under the name of "green revolution" will resolve the problem. Nothing is less certain. Promoters of the revolution themselves believe that it can offer only a respite of ten or twenty years. In underdeveloped countries, although mostly agricultural, the lag in food production in relation to population growth increases more and more. As the crisis worsens these countries will have to import food. But from where? Ⅲ．A Dying Planet The world's population explosion is the source of a whole series of environmental deteriorations, which in time can have disastrous consequences. Because the population—food imbalance makes it necessary to increase agricultural production "at any price", methods often harmful to the environment are used without judgment. For example, the construction of huge dams to irrigate hundreds of thousands of acres can in fact provoke catastrophes. Thus, the Aswan Dam currently prevents the deposit of fertile silts brought each year by the flooding of the Nile. The result will obviously be a decrease in the fertility of the Delta lands. Damming the Mekong risks the same consequences for Vietnam and neighbouring countries. Fertilizers, synthetic pesticides, DDT can be devastating, transforming complex ecosystems, necessary for the conservation of the environment, into simple ecosystems. Certain situations are perceived as dangerous only when they become critical enough to cause numerous deaths. Smog is an example. In London in 1952 it caused some 4,000 deaths. This incident provoked an awakening of conscience and resulted in decisions, which have proven effective. But smog presents still other dangers: namely, it destroys plants which offer little resistance, and whose oxygen production is indispensable to us, and it changes the earth's thermal equilibrium. For these forms of pollution as for all the others, the destructive chain of cause and effect goes back to a prime cause: "too many cars, too many factories, too many detergents, too many pesticides, more and more trails left by supersonic jets, inadequate methods for disinfecting sewers, too little water, too much carbon monoxide. The cause is always the same: too many people on the earth./

判断题Method of calculating weight by conditioned weight is suitable to those cargoes whose moisture contents are not stable , such as wool, silk , etc.

判断题The bid bond will be refunded if the bidder fails to get the award.

判断题ACM contributes a lot to the advancing of IT industry.

判断题The author suggests that it is good benchmark to set your energy-saving preferences to put your hard drive to sleep after 15 minutes of inactivity.

判断题Inspection certificate can be the evidence for lodging a claim.

判断题ACM Student Research Competition encourages students to communicate with researchers in their respective fields.

判断题Commodity inspections usually involve quality

判断题Programs were developed that could prove assertions by manipulating a database of facts in mathematical logic.

判断题Until the Late 1940s, when television began finding its way into American homes, companies relied mainly on print and radio to promote their products and services. The advent of television brought about a revolution in promoting products and services. Between 1949 and 1951, advertising on television grew 960 percent. Today the Internet is once again transforming promotion. By going online, companies can communicate instantly and directly with prospective customers. Promotion on the World Wide Web includes advertising, sponsorships and sales promotions like contests and coupons. In 1996, World Wide Web advertising revenues reached $300 million. Effective online marketers do not merely transfer hard-copy ads to cyberspace. Successful sites blend promotional and non-promotional information, indirectly delivering the advertising messages. To encourage visitors to their sites and to create and cultivate customers" loyalty, companies change information frequently and provide many opportunities for interaction. One of the best online promotion web sites is the Ragu Web site. Here visitors can find thirty six pasta recipes, take Italian lessons, and view an Italian film festival. But they will find no traditional ads. So subtle is the mix of product and promotion that visitors hardly know an advertising message has been delivered. Sega of America, maker of computer games and hardware, uses its Web site for a variety of different promotions, such as introducing new game characters to the public and supplying Web surfers the opportunity to download games. Sega"s home page averages 250,000 visitors a day. To heighten interest in the site, Sega bought an advertising banner on Netscape, thereby increasing site visits by 15 percent. Online participants in Quaker Oats" Gatorade promotion received a free T-shirt in exchange for answering a few questions. Quaker Oats reports that the online promotion created product loyalty and helped the company know its customers better. Now, to target specific Internet users, an increasing number of companies are using "push" technology which automatically delivers customized news and other information to users" computers when they log onto the Internet. Although organizations like Nielsen Media Research are developing technologies to enhance audience measurement and tracking, it remains difficult to assess how many times the same person looks at an ad and who that person is. Although online promotions can be glamorous and sophisticated, they are not perfect. For a well-designed marketing mix, industry experts advise companies to use the Internet as a supplement to other advertising media.

判断题A check is a demand draft drawn on a bank.

判断题Sometimes the images on two LCDs and sounds through two earphones are slightly different so that the virtual world appears more real.

判断题Two advances in computer technology in the 1980s made 8 bit, 32 bit and 64 bit machines have more computing power than a decent-sized mainframe.

判断题In 2005

判断题The DBMS can maintain the integrity of the database by not allowing more than one user to update the same record at the same time.

判断题Since some programs can play games better