（）的任务是识别其特征显著不同于其他数据的观测值。
A.分类
B.聚类
C.关联分析
D.异常检测
参考答案：D
–Tom wishes to win in the game.
–Yes, I heard that. his goal set, he is really busy these days.
A．To
B．As
C．For
D．With
在容器或舱室内进行碳弧气刨时，必须加强通风和排除烟尘的措施。( )
