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[单选题]
操作系统的主要功能是______。(1分)
A
实现软、硬件转换
B
管理系统所有的软、硬件资源
C
把源程序转换为目标程序
D
进行数据处理
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试题答案：
B
答案解释：
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简述指标在行情研究中的作用
2.
Concerning money or anything else, conflicts between husbwife usually reflect a power struggle. Conflicts between parent child often center around the same issue. As children enter adolescence, they begin to demgreater freedom to go where they please, do what they please, make decisions without parental interference. Many american parents do not know how to deal with their teenagers seek advice from books, lectures, parent-training courses. Parents want to maintain a friendly relationship with their teenagers also want to guide them so that their behavior will be whatever the parents consider proper constructive. But in a society of rapidly changing social moral values, parents children often disagree about what is important what is right. Arguments may concern such unimportant matters as styles of dress or hairdos. But quarrels may also concern school work, after school jobs, decisions, use of the family car, dating, sexual behavior. Some families have serious problems with teenagers who drop out of school, run away from home, or use illegal drugs. Be cause so much publicity is given to the problem teenager, one gets the impression that all teenagers are trouble-makers. Actually, relatively few adolescents do anything wrong, nearly all grow up into "solid citizens" who fulfill most of their parents' expectations. In fact, re cent studies show that the "generation gap" is narrowing. The vast majority of teenagers share most of their parents' values ideas. Many parents feel that they ~et along with their adolescents quite well.1. A c cording to the writer, conflicts between husbwife usually reflect ______.A. feelings of hatredB. power struggleC. that they don't care for each otherD. that they may appeal to divorce
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下列杂剧属于关汉卿作品的是（）
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6.以追求稳定的经常性收入为基本目标的基金是
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1. 一般乔木的土球直径为根颈直径的（ ）倍。
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