下面关于联合国的说法中，正确的是（）。
①联合国是世界人民反法西斯斗争取得胜利的产物
②自成立至今，联合国在国际舞台上一直都发挥着积极作用
③联合国以维护国际和平与安全、促进国际合作与发展为宗旨
④联合国是世界上所有国家的总称
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{{B}}College Night Owls Have
Lower Grades{{/B}} College students who are morning people tend to get better grades than those who are night owls(晚睡的人),according to University of North Texas researchers. They had 824 undergraduate(大学本科生的) students complete a health survey that included questions about sleep habits and daytime functioning, and found that students who are morning people had higher grade point averages(GPAs) than those who are night people. "The finding that college students who are evening types have lower GPAs is a very important finding, sure to make its way into undergraduate psychology texts in the near future. along with the, research showing that memory is improved by sleep," study co-author Daniel J. Taylor said in a prepared statement. "Fur A. having trouble falling asleep B. waking at night and having trouble falling back to sleep C. having difficulty concentrating during the day D. being kicked in the leg at night [简答题]机构的“死点”位置在什么情况下需要克服？在什么情况下应当利用？
[单项选择]When I was a kid, I never knew what my parents—or anyone else’s—did for a living. As far as 1 could tell, all grownups had mysterious jobs that involved drinking lots of coffee and arguing about Richard Nixon. If they had job-related stress, they kept it private. Now American families are expected to be more intimate. While this has resulted in a lot more hugs, "I love you’s," and attendance at kids’ football games, unfortunately we parents also insist on sharing the frustrations of our work lives.
While we have complained about our jobs or fallen asleep in car-pool lines, our children have been noticing. They are worried about us. A new survey, "Ask the children, "conducted by the Families and Work Institute of New York City, queried more than 1, 000 kids between the ages of 8 and 18 about their parents’ work lives. "If you were granted one wish to change the way your parents’ work affected your life," the survey asked kids, "what would that wish be" Most parents assumed that chi A. Forgetting about the job as soon as leaving the office. B. Reducing participating the activities for the office. C. Sharing with the children some happy experience. D. Taking part more actively in community activities. [单选题]下列关于井下排水设施的说法，正确的是（ ）
A.主要水仓应由3个独立的巷道系统组成 B.最低中段水仓总容积应能容纳5h的正常涌水量 C.正常涌水量超过2000m3/h时，应能容纳3h的正常涌水量 D.井下最低中段的主水泵房的出口不少于2个 [单项选择]各级决算经批准后，财政部门应当在（）内向本级各部门批复决算。
A. 二十日 B. 十五日 C. 十日 D. 五日 [不定项选择题]被保护线路发生三相短路，相间距离保护感受的阻抗（）接地距离保护感受的阻抗
A.大于 B.等于 C.小于 D.小于等于 我来回答: 提交
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