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问题 单项选择题

女性，21岁，高空坠落伤。查体：BP 70/50mmHg，HR 100次/分，躁动，双瞳孔等大，对光反应阳性，腹腔穿刺抽出未凝血液，头部CT检查示左额硬脑膜下血肿，血量约25ml，中线无明显移位。该病例最佳处理方案()

A．抗休克治疗的同时行开颅血肿清除术

B．立即开颅清除血肿

C．抗休克治疗至血压正常后再行手术

D．抗休克治疗的同时先行开腹探查

E．开颅及开腹探查同时进行

答案

参考答案：D

单项选择题

微元体的应力状态如图示，关于其主应力有下列四种答案：（）

A.A

B.B

C.C

D.D
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填空题

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.
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