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若视频图像每帧的数据量为6.4MB，帧速率为30帧/秒，则显示10秒的视频信息，其原始数据量为______MB。
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在ISO制定并发布的MPEG系列标准中， (14) 的音、视频压缩编码技术被应用到VCD中， (15) 标准中的音、视频压缩编码技术被应用到DVD中， (16) 标准中不包含音、视频压缩编码技术。
Passage 2 Accounting information is expressed primarily in monetary terms. The monetary unit is the prime means of measuring assets. This measure is not surprising given that money is the common denominator in business transactions. In the United States, the monetary unit is the dollar; in Great Britain, the pound sterling; in Japan, the yen. The stable-monetary-unit concept provides an orderly basis for handling account balances to produce the financial statements. Unlike a liter, a foot, and many other measurements, the value of the monetary unit may change over time. Most of us are familiar with inflation. Groceries that cost $50 three years ago may cost $60 today. The value of the dollar changes. In view of the fact that the dollar does not maintain a constant value, how does a business measure the worth of assets and liabilities acquired over a long span of time The business records all assets and liabilities at cost. Each asset and each liability on the balance sheet is the sum of all the individual dollar amounts added over time. For example, if a company bought 100 acres of land in 1975 for $60,000 and another 100 acres of land in 1992 for $300,000, the asset of land on the balance sheet carries a $360,000 balance, and the change in the purchasing power of the dollar is ignored. The stable-monetary-unit concept is the accountant’s basis for ignoring the effect of inflation and making no restatements for the changing value of the dollar. Let’s look at the short-comings of this concept. Suppose another company paid $ 600,000 for the same 200 acres of land in 1992. Its land would be the same as the preceding company’s land, but its balance sheet would show a much higher amount for the land. How do we compare the two companies’ balance sheets The comparison based on the stable-monetary-unit concept may not be valid because mixing dollar values at different times is like mixing apples and oranges. What does an asset mean on the balance sheet
Passage Three
Section One Directions: There are three passages in this section. Each passage is followed by some questions or unfinished statements. For each of them, there are four choices marked A, B, C and D. You should make the best choice and mark the corresponding letter on the ANSWER SHEET by drawing a single line through the center.Passage 1 The credit created for international settlement among banks not only provides a sense of security for the traders involved, but also a reliable source of finance for foreign trade where required. The credit created, in general, favors the exporter. In order to reduce the possible risk, the exporter usually insists on the buyer establishing a credit in his favor before shipment is unloaded. There are generally several types of credits. A "confirmed credit" guarantees payment to the beneficiary, provided that the credit terms and conditions are met and the standing of the advising bank in the beneficiary’s country is sound. A "revocable credit" may be cancelled at any time up to the moment the advising bank pays. This type of credit is the least favorable to the exporter. There is a risk that the goods may be shipped, and the credit revoked before documents are presented to the advising bank. An "irrevocable credit" may not be cancelled or even amended without the consent of all the parties involved. This type of credit guarantees that no single party will revoke the contract already signed. With the credit arrangement, the issuing bank agrees to pay the advising bank, and the advising bank pays the exporter according to the terms of the documents which appear to fulfill the conditions of the credit. Banks, however, are not bound by, and therefore, not concerned with the underlying sales contract on which the credit requirements are based. As long as the documents are in good order and there are no apparent problems with the process, the buyer is still responsible for payment to the issuing bank although the goods received may be of inferior quality to those ordered. Which of the following credit is not mentioned in the passage
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