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【单选题】
有试样 20 kg，破碎至全部通过 10 号筛（2 mm），缩分系数 K = 0.2 kg/mm2，为保证最低可靠质量，最多缩分几次？A.
5
B.
6
C.
4
D.
3
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反馈参考答案：
举一反三
【单选题】下列说法中，错误的是( )。
A.
把具有相同特征的事物的集合称为类
B.
分类的原则不是抽象的，得考虑非本质的、个别的特征、找出共同特征
C.
类是具有相同属性和服务的一组对象的集合
D.
类为属于该类的全部对象提供了统一的抽象描述，它由属性和服务组成
【单选题】The thing was very _____ , and all of us were _____ . [ ]
A.
surprised ; surprising
B.
surprising ; surprised
C.
surprised ; surprised
D.
surprising ; surprising
【单选题】______ if I had arrived yesterday without letting you know beforehand?
A.
Would you be surprised
B.
Were you surprised
C.
Had you been surprised
D.
Would you have been surprised
【单选题】Pinter was awarded the Nobel prize for Literature because
A.
the Academy always made a surprising decision.
B.
he was born of a immigrant Jewish family.
C.
the last prize was given to a different continent.
D.
he made a great contribution to the art form. of theatre.
【简答题】使所有链接文字显示为红色的语句是( )。A. a{color:red;}B. a:link{color:red;}C. a:hover{color:red;}D. a:active{color:red;}
【单选题】下列关于属性的语义的说法中错误的是______。 A) 属性被用来描述一类现实或抽象事物的特征或性质 B) 一个属性的具体取值叫属性实例 C) 属性实例由属性的类型和值来定义 D) 属性通常与具体的实体集无关
A.
B.
C.
D.
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