关系代数运算是以集合运算为基础的运算,它的基本操作是 【4】 、并、差。 发布时间:2017-07-05 14:42 │ 来源:www.tikuol.com 题型:填空题 问题: 关系代数运算是以集合运算为基础的运算,它的基本操作是 【4】 、并、差。
题型:填空题 2007年,在中 * * 、全国人大、国务院和中央军委给内蒙古自治区成立60周年的贺电中说:“内蒙古自治区的成立,是中 * * 党把马克思主义基本原理同我国民族实际相结合的一个伟大创举。”这里的“伟大创举”是指 [ ]A.率先获得解放 B.率先进行土地改革 C.率先建成社会主义制度 D.率先实行民族区域自治 查看答案
题型:填空题 A. How about herB. What happenedC. I believe heD. poor AlanE. I can imagineF. I guess somethingG. ls she fine nowH. I don’t knowRobyn: Has Alan shown up yetScottie: Nope. (56) might have come up.Robyn: I wonder what happened.Scottie: (57) . I hope it’s nothing serious.Robyn: Last week his sister was admitted to the hospital.Scottie: Oh (58) Robyn: His sister had a car accident last week.Scottie: (59) Robyn: She’s still in a coma(昏迷).Scottie: Oh, (60) . His sister is the only he has left since his mother died last year. 查看答案