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7. 从结构滞回曲线图形可以看到不同的构件具有不同的破坏机制,其中正截面的破坏一般是梭形曲线的图形;剪切破坏和主筋粘结破坏引起弓形等的“捏缩效应”。



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  • 马克思主义政治经济学作为一门独立的学科,产生于( )(A)17世纪中叶(B)18世纪中叶(C)19世纪中叶(D)20世纪中叶[参考答案:C]  分值:2得分: 分 系统自动批改于2020年12月25日 23点20分 政治经济学
  • 在中国,“小说”一词最早见于哪里? A、 《庄子·齐物论》 B、 《庄子·外物》 C、 《老子》 D、 《论语》文学概论
  • 题型描述: 阅读理解How often one hears children wishing they were grown up, and old people wishing they were young again. Each age has its pleasures and its pains, and the happiest person is the one who enjoys what each age gives him without wasting his time in useless regrets.Youth is a time when there are few tasks to make life difficult. If a child has good parents, he is fed, looked after and loved. It is impossible that he will ever again in his life be given so much without having to do anything in return. In addition, life is always presenting new things to the child—things that have lost their interest for older people because they are too well-known. But a child has his pains: he is not so free to do what he wishes to do; he is continually being told not to do things, or being punished for what he has done wrong.When the young man starts to earn his own living, he can no longer expect others to pay for his food, his clothes, and his room, but has to work if he wants to live comfortably. If he spends most of his time playing about in the way that he used to as a child, he will go hungry. And if he breaks the laws of society as he used to break the laws of his parents, he may go to prison. If, however, he works hard, keeps out of trouble and has good health, he can have the great happiness of building up for himself his own position in society.1、 People can experience happiness if they _ _ _ _ _ _ . A. value the present B. always think of the past and regret it C. are no longer young D. become old and have much experience 2、 When people were young, they used to _ _ _ _ _ _ . A. have few things to think about and take on B. look after their younger sisters and brothers C. face a lot of difficulties D. be in charge of many business 3、 The pains of children lie in the fact that _ _ _ _ _ _ . A. they can not be accepted and praised by others B. they are often beaten by their parents C. no one helps them make right decisions D. they are not allowed to do what they like to do 4、 Children are usually happy because _ _ _ _ _ _ . A. they are familiar with everything going on around them B. old people lose interest in them C. things are new to them D. they are free to do wrong 5、 Which of the following is NOT needed for a young man to be happy? A. Health. B. Being free from troubles. C. Hard work. D. Wealth.统考英语A
  • 9、下列各项中,属于常用的多媒体信息压缩标准的是______。 A.JPEG标准 B.MP3压缩 C.MPEG标准 D.以上都是计算机统考
  • 函数y=x2+2x-7在区间(-4,4)内满足( ). a.先单调下降再单调上升b.单调上升c.先单调上升再单调下降d.单调下降高等数学基础
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