【单选题】以下四项中,哪个不是数据预处理过程中聚集(数据规约的一个具体方法)工作的优点
B.
通过高层数据视图,起到了范围和标度转换的作用
D.
利用对象或属性群的行为通常比单个对象或属性的行为更加稳定
【单选题】在计算机运行时,把程序和程序运行所需要的数据或程序运行产生的数据同时存放在内存中,这种程序运行方式是1946年由()所领导的研究小组正式提出并论证的。
【简答题】We began the test yesterday, but we (make) ________ preparations long before.
【判断题】取得《等级证书》的检测机构,可设立工地临时试验室( )
【简答题】阅读短文还原句子。 A. But I felt a little nervous. B.I fell down and hurt myself. C. We reached the playground on foot. D. Today I was a success ! E. Finallv I crossed the finishing line at 3'20'. It was a spe...
【简答题】单句改错 1.The mother was standing at the gate, anxiously to see her son. __ __ 2.They have been appointed a new head teacher at the school already. __ __ 3.With all the houses being burnt to the ground, ...
【判断题】取得等级证书的检测机构,可以设立工地临时实验室。