a=2×3×5,b=2×5,那么a、b的最小公倍数是( ) A.15 B.30 C.6

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问题:

a=2×3×5,b=2×5,那么a、b的最小公倍数是(  )
A.15B.30C.60
考点:最大公因数(最大公约数),最小公倍数
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某无色溶液可能是由Na2CO3、NaOH、MgCl2、AlCl3、BaCl2、Fe2(SO43、(NH42SO4溶液中的两种或两种以上混合而成.取该溶液少许于试管,向其中加入H2SO4,有白色沉淀生成,继续加入H2SO4时沉淀又完全消失,整个实验过程中无气体产生,则原溶液是由______ 和______ 混合而成.实验过程中有关的离子反应方程式是______.

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高、低加上有哪些测点?

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依据《安全生产法》的规定,( )依法组织职工参加本单位安全生产工作的民主管理和民主监督,维护职工在安全生产方面的合法权益。

A.经理

B.厂长

C.投资者

D.工会

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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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国际贸易术语

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