单选题期货合约中唯一的变量是______。
单选题登记账簿时，以下说法错误的是______。
单选题规模经济和规模不经济解释了______。
单选题帕累托最优意味着______。
单选题某企业银行存款期初借方余额是220000元，本期借方发生额为100000元，贷方发生额为98000元。那么，期末银行存款余额是______。
单选题Today there are policemen everywhere, but in 1700, London had no policemen at all. A few old men used to protect the city streets at night and they were not paid.
About 300 years ago, London was starting to get bigger and more and more people began to live there. The city was very dirty and many people were poor. There were so many thieves who stole money in the streets that people stayed in their homes as much as possible.
In 1750, Henry Fielding started to pay a group of people to stop thieves. They were like policemen and were called "Bow Street Runners" because they worked near Bow Street.
Fifty years later, there were 120 "Bow Street Runners", but London had become very big and needed more policemen. So in 1829, the first Metropolitan (or London) Police Force was started with 3000 officers. Most of the men worked on foot, but a few rode horses. Until 1920 all the police in London were men.
Today, the London police are quite well paid and for the few police officers who still ride horses, the pay is even better than for the others.
单选题“实收资本”科目按所归属的会计要素不同，归为______类科目。
单选题在完全竞争的条件下，厂商的短期供给曲线是其______。
单选题中央银行在政府的监督和国家总体经济政策的指导下，独立地制定、执行货币政策，这体现了当代中央银行的______。
单选题In recent years, railroads have been combining with each other, merging into supersystems, causing heightened concerns about monopoly. As recently as 1995, the top four railroads accounted for under 70 percent of the total ton-miles moved by rails. Next year, after a series of mergers is completed, just four railroads will control well over 90 percent of all the freight moved by major rail carriers.
Supporters of the new supersystems argue that these mergers will allow for substantial cost reductions and better coordinated service. Any threat of monopoly, they argue, is removed by fierce competition from trucks. But many shippers complain that for heavy bulk commodities traveling long distances, such as coal, chemicals, and grain, trucking is too costly and the railroads therefore have them by the throat.
The vast consolidation within the rail industry means that most shippers are served by only one rail company. Railroads typically charge such "captive" shippers 20 to 30 percent more than they do when another railroad is competing for the business. Shippers who feel they are being overcharged have the right to appeal to the federal government"s Surface Transportation Board for rate relief, but the process is expensive, time consuming, and will work only in truly extreme cases.
Railroads justify rate discrimination against captive shippers on the grounds that in the long run it reduces everyone"s cost. If railroads charged all customers the same average rate, they argue, shippers who have the option of switching to trucks or other forms of transportation would do so, leaving remaining customers to shoulder the cost of keeping up the line. It"s a theory to which many economists subscribe, but in practice it often leaves railroads in the position of determining which companies will flourish and which will fail. "Do we really want railroads to be the arbiters of who wins and who loses in the marketplace?" asks Martin Bercovici, a Washington lawyer who frequently represents shippers.
Many captive shippers also worry they will soon be hit with a round of huge rate increases. The railroad industry as a whole, despite its brightening fortunes, still does not earn enough to cover the cost of the capital it must invest to keep up with its surging traffic. Yet railroads continue to borrow billions to acquire one another, with Wall Street cheering them on. Consider the $10.2 billion bid by Norfolk Southern and CSX to acquire Conrail this year. Conrail"s net railway operating income in 1996 was just $427 million, less than half of the carrying costs of the transaction. Who"s going to pay for the rest of the bill? Many captive shippers fear that they will, as Norfolk Southern and CSX increase their grip on the market.
单选题按账户的经济内容分类，“制造费用”属于______账户。
单选题下列各项中，属于流动负债的是______。
单选题从所给四个选项中，选择最合适的一个填入问号处，使之呈现一定规律性：
单选题One day Jack"s wife was cleaning out a closet (壁橱).
"Look at all these umbrellas," she said to Jack. "There are eight and they are all broken."
"I"ll take them to the umbrella shop and have them mended," Jack said.
Jack took the eight umbrellas to the shop and left them there. "They"ll be ready tomorrow," the shopkeeper said.
That evening Jack went home from the office by bus as usual. He sat next to an old woman. She had an umbrella on the floor near her.
When the bus reached his stop, he picked up her umbrella and stood up. "Hey!" the woman said. "That"s my umbrella!"
"I"m sorry," Jack said, and at the same time he gave the umbrella to her. "I wasn"t thinking. Please excuse me."
The next day he got back the umbrellas from the umbrella shop and got on the bus.
As he sat down, a voice behind him said, "You certainly have a successful day!"
He turned around and saw the woman whose umbrella had almost been taken by him the day before.
单选题我国专门为退市后的上市公司股份提供的继续流通场所为______。
单选题The way she thought of ______ money was to sell her hair.
单选题当整个经济的价格体系恰好使所有的商品供求都相等时，经济所处的状态是______。
单选题在造船业不景气的情况下，某造船厂除仍承接远洋石油运输船的生产业务外，开始承接建筑工程和石油勘探设备的钢结构加工业务，这一做法表明该造船厂实施的是______战略。
单选题蒙代尔—弗莱明模型说明了货币政策和财政政策影响总收入的效力取决于______。
单选题从所给四个选项中，选择最合适的一个填入问号处，使之呈现一定的规律性。