()是指数据适用于不同应用的能力
A.数据挖掘
B.数据勘测
C.数据分析
D.数据质量
参考答案:D
There _____ many flowers in the garden last year. But now there _____ anything.[ ]
A. are; isn't
B. were; isn't
C. were; wasn't
D. was; weren't
冒泡排序算法在最好的情况下的元素交换次数为______。