处于成长阶段的物流服务重点已从平衡的服务与成本绩效转变为不惜任何代价提供所需服务。

优生有利于提高（）。

It is normal for students to feel_______ before the examination even though they have prepared well.

A．serious

B．anxious

C．energetic

D．surprised

能有效地控制慢性心功能不全及改善心肌构形重建的药物是（）

A.氢氯噻嗪 

B.地高辛 

C.硝普钠 

D.卡托普利 

E.氨茶碱

Data mining is an (66) research field in database and artificial intelligence. In this paper, the data mining techniques are introduced broadly including its producing background, its application and its classification. The principal techniques used in the data mining are surveyed also, which include rule induction, decision (67) , artificial (68) network, genetic algorithm, fuzzy technique, rough set and visualization technique. Association rule mining, classification rule mining, outlier mining and clustering method are discussed in detail. The research achievements in association rule, the shortcomings of association rule measure standards and its (69) , the evaluation methods of classification rules are presented. Existing outlier mining approaches are introduced which include outlier mining approach based on statistics, distance-based outlier mining approach, data detection method for deviation, rule-based outlier mining approach and multi-strategy method. Finally, the applications of data mining to science research, financial investment, market, insurance, manufacturing industry and communication network management are introduced. The application (70) of data mining are described.

（68）处填（）。

A．made

B．created

C．nucleus

D．neural

在10L的一密闭容器中，用2 mol的A和2 mol的B发生：A（g）+ 2 B（g） 2 C(g)，一小时后反应达到平衡，若此时混合气体中A和B的物质的量之和与C的物质的量相等，则A的转化率为      ,B在的反应速率      ,平衡时C的体积分数为_______。