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 国家开放大学 / 科技文献检索

现代化学化工文献的特点不包括( )
文献数量增加速度迅猛
文献种类繁多
文献交叉重复, 发表分散
文献永不失效
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  • 【多选题】7、冲突的类型有( )A上下之级间的冲突B部门之间的冲突C领导之间的冲突D员工之间的冲突管理方法与艺术
  • It is a(an) _ _ _ _ _ _ of setting your goals and following them. 大学英语
  • 下列说法正确的有: 物权法学
  • 何尔登效应是指 生理学(影像)
  • 4[阅读题] A man once said how useless it was to put advertisements in the newspapers. “Last week, ”he said, my umbrella was stolen from a London church. As it was a present, I spent twice its worth in advertising, but didn ’t get it back. “How did you write your advertisement? ”asked one of the listeners, a merchant. “Here it is, ”said the man, taking out of his pocket a slip cut from a newspaper, The other man took it and read, “Lost from the City Church last Sunday evening, a black silk umbrella. The gentleman who finds it will receive ten shillings on leaving it at No. 10 Broad Street. ” “Now, ”said the merchant , “oIften advertise, and find that it pays me well. But the way in which an advertisement is expressed is of extreme importance. Let us try for your umbrella again, and if it fails, I ’ll buy you a new one. ”The merchant then took a slip of paper out of his pocket and wrote: “If the man who was seen to take an umbrella from the City Church last Sunday evening doesn ’t wish to get into trouble, he will return the umbrella to No.10 Broad Street. He is well known. ”This appeared in the paper, and on the following morning, the man was astonished when the opened the front door. (81) In the doorway lay at least twelve umbrellas of all sizes and colors that had been thrown in, and his own was among the number. Many of them had notes fastened to them saying that they hand been taken by mistake, and begging the loser not to say anything about the matter. 1. The man once thought advertising was() . A. of little use B. of some use C. practical D. valuable 2. The result of the first advertisement was that() . A. the man got his umbrella back B. the man wasted some money advertising C. nobody found the missing umbrella D. the umbrella was found somewhere near the church 3. The merchant suggested that the man should() . A. buy a new umbrella B. go on looking for his umbrella C. write another better advertisement. D. report to the police 4. Why did the merchant say “Ioften advertise and find that it pays me well ”()? A. He knew how to advertise B. He had more money for advertising C. He found it easy to advertise. D. He had a friend in the newspaper where he advertised. 5. This is a story about (). A. a useless advertisement B. how to make an effective advertisement C. how the man lost and found his umbrella D. what the merchant did for the umbrella owner专升本英语1
  • 在数据库的安全性控制中,授权的数据对象的(),授权子系统就越灵活。 A.范围越小 B.约束越细致 C.范围越大 D.约束范围大 E.数据库应用