常温下有下列物质的饱和溶液各200克,分别加热到100℃时,并分别蒸发其中的少量

题型:选择题

问题:

常温下有下列物质的饱和溶液各200克,分别加热到100℃时,并分别蒸发其中的少量水,一定会有晶体析出的是[ ]

A、澄清石灰水

B、硝酸钾的饱和溶液

C、饱和食盐水

D、蔗糖溶液

考点:固体溶解度饱和溶液,不饱和溶液
题型:选择题

某液晶电视,现从九折出售,比原价便宜了1200元。你知道这台电视机原价是多少元吗?

题型:选择题
在1,2,3,4,5中任意选取一个数,恰好小于
10
的概率是______.
题型:选择题

宫外孕破裂时哪个时期可用硬膜外麻醉()

A.休克前期及轻度休克

B.扩容后血压无改善

C.中度休克

D.重度休克

E.以上均可

题型:选择题

助力运动的力可以来自于()。

A、利用滑轮装置

B、利用悬吊装置

C、健测肢体的帮助

D、通过他人帮助活动

E、活动局部肌肉主动收缩

题型:选择题

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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