信息安全等级保护工作直接作用的具体的信息和信息系统称为（）。A、客体 B、客观方面 发布时间：2017-10-24 21:04 │ 来源：www.tikuol.com 题型：单项选择题 问题： 信息安全等级保护工作直接作用的具体的信息和信息系统称为（）。A、客体B、客观方面C、等级保护对象D、系统服务
题型：单项选择题 根据短文内容，用所给单词的适当形式填空。 clothes, use, get, pass, do, spend, in, money, hard, owner Life used to be fun for teenagers. They used to have money to 1_______, and free time to spend. They used to wear teenage 2_______ and meet in teenage coffee bars and discos. Some of them still do now. But for many young people, life is 3_______ now. Jobs are hard to find. There's not so much 4_______. Things are more expensive, and it's hard to find a cheap place to live 5_______. Teachers say that students work harder than they 6_______ to. They are more interested in 7_______ exams. They know that good exam results may 8_______ them better jobs. Most young people worry more about money than their parents 9_______ twenty years ago. They try to spend less and save more. They want to be able to get home of their 10_______ one day. 查看答案
题型：单项选择题 下列实验方案中，设计不合理的是（ ）A．用MnO2来区别水和过氧化氢溶液B．用过滤的方法将浑浊的水变为澄清的水C．用燃烧木炭的方法制备纯净的二氧化碳气体D．用酚酞溶液鉴别氯化钠溶液和氢氧化钠溶液 查看答案