1.  >>  河南成教 / 河南理工大学
 河南成教 / 河南理工大学
正确率:100%

2[单选题]

若向量组(Ⅰ):可由向量组(Ⅱ):线性表示,则必有( )


A.秩(Ⅰ)≤秩(Ⅱ)        B.秩(Ⅰ)>秩(Ⅱ)Crs         Dr>s





A.A

B.B

C.C

D.D


  积分
 参考答案:
 佳题速递:
  • 写出冒泡排序法的过程。微机原理及接口技术
  • 10、平原微丘区一级公路合成坡度的限制值为10%,设计中某一路段,按平曲线半径设置超高横坡度达到10%则此路段纵坡度只能用到( ). (分数:3 分) A. 0 B. 0.003 C. 0.02 D. 3%道路勘测设计
  • 关于封闭体系体系与环境之间的交换说法正确的是物理化学
  • 1、       Just over a hundred years ago, there was a young Canadian physical director who was working in a training school for athletes in the United States.         One day the Canadian instructor was asked to design a team sport that would provide good exercise and be fun to play. He decided on a ball game. The game had to be flexible (灵活的) and avoid rough play. There was to be no bodily contact between players and running with the ball was prohibited.         The rules were simple and players didn't need much equipment to play. Peach baskets were originally nailed to a wooden balcony surrounding the gymnasium (体操房). They were placed above the head and the ball had to be skillfully thrown into the basket in order to score. That gave the game its name: basketball. Speed and finesse were the main requirements, not strength. It was an ideal indoor team sport.         The game was first played in the United States but was introduced to Canada soon after. Canada's most famous team held the World Championship for sixteen years during the 1920s and 1930s. This team also competed in four Olympic demonstration matches (表演赛) winning twenty-seven consecutive (连续的) games, but they received no medals. Why not? Because they were women, and women's basketball wasn't an official Olympic sport until 1976.     1.   Basketball first appeared in _ _ _ _ _ _ _ _ .       A) Canada B) England C) America D) Germany   2.   What does "finesse" in Para. 3 mean?       A) Goodness. B) Great skills. C) Strength. D) Quick response.   3.   Basketball was NOT designed to be a form of sport that _ _ _ _ _ _ _ _ .       A) is played by more than one person at a time B) prohibits bodily contact C) is easy to learn and play D) requires the players to be very strong or heavy   4.   Which of the following statements is TRUE?       A) Basketball was named after its inventor. B) Basketball-players can run with the balls. C) Basketball was introduced to Canada in 1920s. D) Basketball-players usually move fast.   5.   It can be inferred from the passage that _ _ _ _ _ _ _ _ .       A) women basketball-players did better than men B) women's basketball became an official Olympic sport in 1976 C) basketball becomes very popular in Canada D) basketball was introduced to Canada by its inventor    英语(四)
  • 3、对于承租人来说,设备租赁相对于设备购买的优越性有( )。 (分数:3 分) A. 可以将承租的设备用于担保、抵押贷款 B. 可用较少的资金获得生产急需的设备 C. 可以自主对设备进行改造 D. 租金可在税前扣除,享受税费上的利益工程经济学
  • 编制施工组织总设计时必须紧密结合工程实际,并以计划文件、设计文件及有关资料、合同文件、建设地区的调查资料、法规及相关资料等作为编制依据。土木工程施工