数据挖掘的任务主要有()
A.数据搜索与重构
B.数据结构优化
C.数据特性描述
D.预测
参考答案:C, D
If you hadn’t taken such a long time to get dressed,we’d __________there by now.
A.be
B.circles
C.is circling
D.be circling
肌肉注射的缩写应该为()
A.i.v.
B.p.0.
C.i.m.
D.i.D.
E.inj.