患者胃十二指肠溃疡穿孔腹膜炎24小时，伴有休克，应选择哪种治疗（） A.积极抗休克，

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 con sumers 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.

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (52) an educational institution, and they are required to study for a (53) of fifteen hours a week on a daytime course. Prospective students have to show that they can afford their studies, and that they have sufficient (54) resources to support themselves (55) in this country.

In order to work here the foreigner needs a work permit, (56) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (57) these permits, and there is little that can be done (58) it; it would be extremely unwise for a foreign visitor to work (59) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the European countries, who are often given (60) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (61) part-time jobs while they are studying here.

56().

A.it 

B.what 

C.that 

D.which

质量分别为和的物块A、B用轻弹簧相连，设两物块与接触面间的动摩擦因数都相同。当用水平力F作用于B上且两物块在粗糙的水平面上，共同向右加速运动时，弹簧的伸长量为，如图甲所示；当用同样大小的力F竖直向上加速提升两物块时，弹簧的伸长量为，如图乙所示；当用同样大小的力F沿固定斜面向上拉两物块使之共同加速运动时，弹簧的伸长量为，如图丙所示则等于     （   ）

A．1：1：1                    B．1：2：3             C．1：2：1              D．无法确定

下列说法正确的是哪一项 ①“三权分立”是指把国家权力划分为立法权、行 * * 、司法权三部分，并分别由国家的权力机关、行政机关和司法机关掌握 ②在我国，最高人民法院所作的判决书，虽然不是规范性法律文件，但可以作为法律渊源 ③我国人民代表大会在国家机关体系中居于领导与监督地位，不受任何其他国家机关的牵制 ④王某因犯罪被判处有期徒刑8年，但依法律规定王某在监狱服刑期间仍享有选举权

A．①②④

B．①②③④

C．①③④

D．②③④

脑啡肽属于（）

A.生物碱类

B.哌啶类合成镇痛药

C.氨基酮类（芳基丙胺类）合成镇痛药

D.半合成镇痛药

E.内源性多肽