在802.11MAC层报文分为哪几种类型().A.管理帧 B.监控帧 C.控制帧 D

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问题:

在802.11MAC层报文分为哪几种类型().

A.管理帧

B.监控帧

C.控制帧

D.数据帧

考点:移动通信代维人员专业考试WLAN网络维护WLAN网络维护题库
题型:多项选择题

595÷5的商是______位数;要使□37÷2的商是两位数,□里可以填______.

题型:多项选择题

通常闭合性肾损伤的最好治疗方法是()。

A.肾周围血肿的早期引流

B.观察和支持疗法

C.用导尿管冲洗肾盂

D.肾造瘘

E.半肾切除

题型:多项选择题

A、B、C、D、E代表5种元素.请填空:

(1)A元素基态原子的最外层有3个未成对电子,次外层有2个电子,其元素符号为______

(2)B元素的负一价离子和C元素的正一价离子的电子层结构都与氩相同,B负一价离子的结构示意图为______,C的电子排布式为______

(3)E元素基态原子的M层全充满,N层没有成对电子,只有一个未成对电子,E的基态原子的电子排布式为______.

题型:多项选择题

[背景材料]
某豪华酒店工程项目,十八层框架混凝土结构,全现浇混凝土楼板,主体工程已全部完工,经验收合格。进入装饰装修施工阶段,该酒店的装饰装修工程由某装饰公司承揽了施工任务,装饰装修工程施工工期为150天,装饰公司在投标前已领取了全套施工图纸,该装饰装修工程采用固定总价合同,合同总价为720万元。
该装饰公司在酒店装修的施工过程中采取了以下施工方法:地面镶边施工过程中,在靠墙处采用砂浆填补,在采用掺有水泥拌和料做踢脚线时,用石灰浆进行打底,木竹地面的最后一遍涂饰在裱糊工程开始前进行。对地面工程施工采用的水泥的凝结时间和强度进行复验后开始使用。
在水磨石整体面层施工过程中,采用同类材料以分格条设置镶边。
[问题]
1.该酒店的装饰装修工程合同采用固定总价是否妥当为什么

题型:多项选择题

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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