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[填空题] 选择通道宜于连接多台_________速设备,通道“数据宽度”为_________。
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  • 数据库(DB)、数据库管理系统(DBMS)、数据库系统(DBS)三者之间的关系为()。 数据库原理与应用
  • 4[名词解释题] 聚集表 数据库原理
  • 6.圆管的水力半径是(  )。 流体力学
  • 153[单选题] The belief of the eighteenth - century neoclassicists in England led them to seek the following EXCEPT ______. A.proportion B.unity C.harmony D.spirit美国文学作品选读
  • 1.Listen and fill in the blanks. 00:00/01:30 Peter: Wow. Look. It’s raining cats and dogs — again! I hate this weather. When does winter break start? Jack: Winter break? It’s only October. Peter: I know, but I’m 1 (1) of studying. I want to go someplace warm and lie on the beach for a week. Someplace where it's 2 (2) and dry. Florida or Hawaii, maybe? Jack: Yeah. Where we can go swimming and snorkeling and get a great 3 (3). Now that’s my idea of a perfect vacation. Ming: Not mine. I can’t swim very well, and I don’t like lying in the 4 (4). Peter: Oh, yeah? How come? Ming: I don’t know. I just prefer the mountains, especially in winter. I 5 (5) snowboarding. In fact, I’m planning to go to Bear Mountain with some friends in December. Do you guys want to 6 (6)? Jack: No thanks. I went there last year. I was freezing the whole time. Anyway, I don’t know how to 7 (7) very well. Last year, I fell about a hundred times. Ming: Peter, how about you? Peter: Sorry, I’m like Jack. I don’t want to go anyplace where it’s below 8 (8) degrees. Jack: By the way, what’s the weather forecast for tomorrow? Ming: The same as today. Cloudy, cold, and a 90 percent 9 (9) of rain. Jack: Oh, no! I left my umbrella at the library. Ming: You can borrow mine. I’ve got an 10 (10) one.高级英语听说(1)
  • 9[多选题] 一块冰能浮在水面上也能浮在盐水面上两者相比较可知: [ ] A.因为盐水的密度比水大, 所以冰块在盐水中受的浮力大 B.因为一块冰受到的重力不变, 所以它浮在水面和浮在盐水面上受到的浮力相等 C. 因为盐水的密度比水大, 所以冰块在水中排开液体的体积大 D.因为水比冰的密度大, 盐水比水的密度大, 所以冰块在盐水中受的浮力大大学物理