数据库系统依赖于( )支持数据独立性。A．具有封装机制 B．定义完整性约束条件 C

为了增加考核者培训的有效性，还应增加的内容不包括()。

A.以前考核中存在的问题

B.工作绩效的多角度性

C.客观记录所见事实的重要性

D.合格与不合格员工的具体事例

关于Ethernet网卡分类方法的描述中，错误的是______。

A．可按支持的主机总线类型分类

B．可按支持的传输速率分类

C．可按支持的传输介质类型分类

D．可按支持的帧长度分类

Some consumer researchers distinguish (1) "rational" motives and "emotional" (or "non-rational") motives. They use the term "rationality" (2) the traditional economic sense that assumes (3) consumers behave rationally when they carefully consider all alternatives (4) choose those that give them the greatest utility (i.e., satisfaction). (5) a marketing context, the term "rationality" implies that the consumer selects goods based (6) totally objective criteria, such (7) size, weight, price, and so on. "Emotional" motives imply the selection of goods (8) to personal or subjective criteria—the desire (9) individuality, pride, fear, affection or status.
The assumption underlying this distinction is (10) subjective or emotional criteria do not maximize utility or satisfaction. (11) , it is reasonable to assume that consumers always attempt to select alternatives that, (12) their view, serve to maximize satisfaction. Obviously, the assessment of satisfaction is a very personal process, based (13) the individual’s own needs as (14) as on past behavioral, social, and learning experiences. What may appear (15) irrational to an outside observer may be perfectly rational (16) the context of the consumer’s own psychological field. For example, a product purchased to enhance one’s self-image (such as a fragrance) is a perfectly rational form of consumer behavior. (17) behavior did not appear rational to the person who undertakes it (18) the time that it is undertaken, obviously he or she would not do it. (19) the distinction between rational and emotional motives does not appear to be warranted.
Some researchers go so far (20) to suggest that emphasis (21) "needs" obscures the rational, or conscious, nature of most consumer motivation. They claim that consumers act consciously (22) maximize their gains and minimize their losses; that they act not (23) subconscious drives but from rational preferences, (24) what they perceive to be (25) their own best interests.

会员制期货交易所章程应当载明的事项包括（）。

A.对会员的纪律处分

B.会员的权利和义务

C.对会员的收费标准

D.会员资格及其管理办法

腹部损伤，X线检查显示腹膜后积气，可能为（）。

A.肾脏损伤

B.胃损伤

C.十二指肠水平部损伤

D.皮下气肿

E.结肠损伤