17、影响信息处理环节不安全的因素不包括______。A.数据容易被篡改B.数据来源不可靠C.病毒的攻击D.数据在传输过程中会被截获并被修改

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高等继续教育 / 计算机统考

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17、影响信息处理环节不安全的因素不包括______。
A.数据容易被篡改
B.数据来源不可靠
C.病毒的攻击
D.数据在传输过程中会被截获并被修改

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题型描述: 阅读理解Advertisement can be thought of “as the means of making known in order to buy or sell goods or services”. Advertisement aims to increase people’s awareness and arouse interest. It tries to inform and to persuade. The media are all used to spread the message. The press offers a fairly cheap method, and magazines are used to reach special sections of the market. The cinema and commercial radio are useful for local market. Television, although more expensive, can be very effective. Public notices are fairly cheap and more permanent in their power of attraction. Other ways of increasing consumer interest are through exhibitions and trade fairs as well as direct mail advertisement.There can be no doubt that the growth in advertisement is one of the most striking features of the western world in this century. Many businesses such as those handling frozen foods, liquor, tobacco and medicines have been built up largely by advertisement.We might ask whether the cost of advertisement is paid for by the producer or by the customer. Since advertisement forms part of the cost of production, which has to be covered by the selling price, it is clear that it is the customer who pays for advertisement. However, if large scale advertisement leads to increased demand, production costs are reduced, and the customer pays less.It is difficult to measure exactly the influence of advertisement on sales. When the market is growing, advertisement helps to increase demand. When the market is shrinking, advertisement may prevent a bigger fall in sales than would occur without its support. What is clear is that businesses would not pay large sums for advertisement if they were not convinced of its value to them.1、 From the last sentence of this passage we conclude that _ _ _ _ _ . A. advertisement usually cost businesses large amounts of money B. advertisement could hardly convince people of the value of the goods C. businessmen know well that advertisement could bring them more profits D. businesses usually do not pay much for advertisement 2、 The word “media”（in the first paragraph）includes _ _ _ _ _ . A. television B. radio C. the press D. all of the above 3、 Advertisement is mainly paid for by _ _ _ _ _ . A. increased sales B. the customer C. reduced prices D. the producer 4、 Advertisement can increase demand _ _ _ _ _ . A. in a growing market B. in a shrinking market C. in any circumstances D. all the time 5、 Advertisement is often used to _ _ _ _ _ . A. push the sale B. arouse suspicion C. deceive customers D. increase production统考英语A

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