光缆发生故障抢修应遵循原则,说法正确的是()。 A.先一干后二干 B.先二干后本地网

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问题:

光缆发生故障抢修应遵循原则,说法正确的是()。

A.先一干后二干

B.先二干后本地网

C.先汇聚层后接入层

D.先核心层后汇聚层

考点:传输设备传输线路传输线路题库
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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 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.

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如果|a+1|+(b﹣2)2=0,则(a+b)2003+a2004的值为(    ).

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苏丹红是一类染色剂,常用于油漆和鞋油中.据悉苏丹红有致癌的作用,不能食用.以下是“苏丹红I号”的有关信息:

请根据以上信息,回答下列问题:

(1)属于“苏丹红I号”的物理性质的有(填编号)______.

(2)它的致癌原因主要是在人体内发生了(填“物理”或“化学”)______变化.

(3)“苏丹红I号”中含有______种元素,相对分子质量为______,各元素质量比为______.

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下列关于流行性出血热发热期三痛的叙述,正确的是()

A.全身酸痛、头痛、眼眶痛

B.头痛、腓肠肌痛、腰痛

C.腹痛、腰痛、眼眶痛

D.头痛、腰痛、眼眶痛

E.全身酸痛、腰痛、眼眶痛

题型:多项选择题

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