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更多“The sentence pattern “It has a…”相关的问题
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B.crossword
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A.Quotations
B.Examples
C.Explanations
D.Statistics
在模式枚举(pattern enumeration)类应用中，需要从主串T中找出所有的模式串P(T|=n，|P|=m)，而且有时允许模式串的两次出现位置之间相距不足m个字符。
类似于教材310页图11.3中的实例，比如在“000000”中查找“000”。若限制多次出现的模式串之间至少相距|P|=3个字符，则应找到2处匹配;反之，若不作限制，则将找到4处匹配。
a)试举例说明，若采用后一约定，则教材11.4.3节BM算法的好后缀策略，可能需要Ω(nm)时间;
b)试针对这一缺陷改进好后缀策略，使之即便在采用后一约定时，最坏情况下也只需线性时间。
Hopewell sells a line of goods under a six-month warranty.Any defect arising during that period is repaired free of charge.Hopewell has calculated that if all the goods sold in the last six months of the year required repairs the cost would be $2 million.If all of these goods had more serious faults and had to be replaced the cost would be $6 million.
The normal pattern is that 80% of goods sold will be fault-free, 15% will require repairs and 5% will have to be replaced.
What is the amount of the provision required().
A、$2 million
B、$1.6 million
C、$6 million
D、$0.6 million
阅读短文，在空白处填入适当的介词。
With One day, Mr. Green told his students to make sentences (1) the words“love, hate” and so on. The kids were all busy (2) the work on their notes.
(3) several minutes many of them handed in their work (4) the teacher.Mr. Green read the notes one (5) one. And most(6)the sentences made by the children were good. There was a big smile(7)his face. Just (8) that time he found a piece of red paper. On it there was such a sentence,“I love my mother better than my father.”“Eim... OK!”said Mr.Green,“but..”He turned over the paper.
He found there were no names (9) that paper. He read the sentence again and again. And slowly the big smile (10) his face was gone. Then he said to the class, “ Whose paper is this？”Tom stood up and said,“It's mine, sir.”
We may think of the American economy, as consisting of two completely different sectors.The world of the giant corporations, which can be called the "industrial system", consists of 500 or 600 firms that provide "nearly all communications, nearly all production and distribution of electric power, much transportation, most manufacturing and mining, a substantial share of retail trade, and a considerable amount of entertainment." Outside of this industrial system fall most agricultural enterprises, some mining and trucking, professional and artistic pursuits, some retail trade, and most personal and domestic services.
The classical economic laws of supply and demand still apply to some degree.But today the industrial sector is characterized far more by planning and certainty than by the free play of market forces.It appears that it could scarcely be otherwise.In large corporations with advanced technological systems and complex organizations of highly trained specialists, plans for producing any one item are made well in advance.Such plans, once made, are hard to change.Because long-term planning demands certainty, market forces are avoided by various means.For example, the corporation may achieve "vertical integration" by buying companies that supply raw materials at one end of the process and distribution outlets at the other.Corporations may agree on "just prices" for things they buy and sell.They may enter mutually advantageous long-term contracts with suppliers and customers.Moreover, in their quest for certainty they generally have the support of the state.
26.The American giant corporations possess so many new characteristics that
A) highly educated managers are important for the corporations
B giant corporations become decentralized
C economic laws of the market are effective inside corporations
D heads of the giant corporations try to control the government
27.By the second paragraph, we know that .
A retail trade accounts for a big part in non-industrial system
B there are more giant corporations than agricultural enterprises
C giant corporations control every part of American economy
D giant corporations provide most of productions and services
28.From the whole passage, we can infer that American economy .
A is experiencing the rise of giant corporations
B is determined by hundreds of giant corporations
C has failed to balance supply and demand
D becomes highly-planned one
29.In the third sentence of last paragraph, the second "it" may refer to.
A classic economic law of supply and demand
B industrial sector
C American economy
D market force
30.Which of the following is not mentioned in the passage？
A American economy is characterized by high technology and giant corporations.
B American economy consists of industrial systems and agricultural enterprises.
C.Market economy is gradually replaced by planned economy.
D Highly trained specialists are needed.
