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【简答题】
numpy系统是Python的第三访数值计算扩展库,可用来存储和处理大型矩阵。使用它之前应通过_____________语句安装。
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【简答题】关系模式的三类完整性约束条件分别是实体完整性、参照完整性约束和 ______。
【单选题】下列文学常识表述正确的一项是( )
A.
莫泊桑、欧•亨利和契诃夫被誉为“世界短篇小说三大巨匠”。
B.
《论语》是一部语录体散文,儒家经典著作之一,该书作者是孔子。
C.
《致橡树》作者是当代女诗人舒婷,她是浪漫主义诗派的代表,作品有《双桅船》。
D.
《我的母亲》作者老舍，原名舒庆春，字舍予，代表作品有话剧《骆驼祥子》、《龙须沟》，长篇小说《四世同堂》等。
【单选题】鲁迅先生说:“假如我们设立一个‘肚子饿了怎么办’的题目,拖出古人来质问罢,倘说‘肚子饿了应该争食吃’,则即使这人是秦桧,我赞成他,倘说‘应该打嘴巴’,那就是岳飞,也必须反对。”这段论述表明 1真理是具体的有条件的 2任何真理都包含着谬误的成分,要正确对待错误 3真理面前人人平等 4真理具有客观性
A.
②④
B.
①③
C.
①②
D.
③④
【单选题】Why does the author say that it was the artists who kept the keys in Paragraph 6?
A.
To show that the artists play a very important role in lifting the souls of people and thus enabling people to have a pure life.
B.
To demonstrate that artists and their paintings should serve as a bridge between the universal mind and the mind of humans.
C.
To prove that artists were very important in expressing the themes of the Hudson River paintings.
D.
To state that artists should have a broad knowledge of the Bible in order to fully depict the themes of the Hudson River paintings.
【简答题】According to the author, why do many artists, writers and statesmen achieve prosperity?
【简答题】关系模型的三类完整性规则是实体完整性、______和用户定义完整性。
【简答题】什么是实体完整性?可以通过哪些方法来实现实体完整性规则?
【单选题】Why do the artists run a significant risk of losing the audience's favor?
A.
Becuse they don't make changes.
B.
Because their work begins to show a lack of continuity in its appeal.
C.
Because the public simply discounts styles other than those for which the artist has become famous.
D.
Because they don't work harder than before.
【简答题】According to the author, why do so many artists, writers and statesmen achieve prosperity?
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