根据《建筑设计防火规范》中消防电源及其配电的设计规定,下列()设备的供电应在最末一级

题型:多项选择题

问题:

根据《建筑设计防火规范》中消防电源及其配电的设计规定,下列()设备的供电应在最末一级配电箱处设置自动切换装置。

A.消防控制室

B.消防水泵

C.排烟风机

D.照明用电

考点:一级消防工程师(二)建筑防火(二)建筑防火题库
题型:多项选择题

读下图,完成下列小题:

1、①②③④四地所对应的气候类型正确的是 [ ]

    A、①地中海气候

    B、②热带沙漠气候

    C、③热带草原气候

    D、④热带季风气候

2、图中②地所在半岛,最丰富的矿产资源是[ ]

    A、石油 

    B、煤炭 

    C、金刚石

    D、铁矿

3、图中②地居民多信仰的宗教是 [ ]

    A、基督教

    B、伊斯兰教

    C、佛教

    D、印度教

题型:多项选择题

不属于变异指标的是

A.中位数

B.标准差

C.全距

D.四分位间距

E.变异系数

题型:多项选择题

如右图所示,两足够长的平行金属导轨水平放置,间距为L,左端接有一阻值为R的电阻;所在空间分布有竖直向上,磁感应强度为B的匀强磁场.有两根导体棒c、d质量均为m,电阻均为R,相隔一定的距离垂直放置在导轨上与导轨紧密接触,它们与导轨间的动摩擦因数均为μ.现对c施加一水平向右的外力,使其从静止开始沿导轨以加速度a做匀加速直线运动.(已知导体棒c始终与导轨垂直、紧密接触,导体棒与导轨的最大静摩擦力等于滑动摩擦力,导轨的电阻忽略不计,重力加速度为g)

 

(1)经多长时间,导体棒d开始滑动;

(2)若在上述时间内,导体棒d上产生的热量为Q,则此时间内水平外力做的功为多少?

题型:多项选择题

D

There is probably no field of human activity in which our values and lifestyles are shown more clearly and strongly than they are in the clothes that we choose to wear. The dress of an individual is a kind of "sign language" that communicates a set of information and is usually the basis on which immediate impressions are formed. Traditionally, a concern for clothes was considered to be an affair of females, while men took pride in the fact they were completely lacking in clothes consciousness(意识).

This type of American culture is by degrees changing as man dress takes on greater variety and color. Even as early as 1995, a researcher in Michigan said that men attached rather high importance to the value of clothing in daily life. White-collar workers in particular viewed dress as a symbol of ability, which could be used to impress or influence others, especially in the work situation. The white-collar worker was described as extremely concerned about the impression his clothes made on his superiors(上司). Although blue-collar workers were less aware that they might be judged on the basis of their clothing, they recognized that any difference from the accepted pattern of dress would be made fun of by fellow workers.

Since that time, of course, the patterns have changed; the typical office worker may now be wearing the blue shirt, and the laborer a white shirt, but the importance of dress has not become less.      Other researchers in recent years have helped to prove its importance in the lives of individuals at various levels and in different social and economic status groups(阶层).

68.From the passage we know that______.

A.the Americans' values and lifestyles can't be shown clearly in their activity

B.the Americans' values and lifestyles are from the sign language

C.the clothes the Americans choose to wear have something to do with their values and lifestyles

D.the clothes the Americans choose to wear depend on a set of information

69.Traditionally, the Americans usually thought that______.

A.men should care much for clothes

B.women should concern greatly about what they wore but men shouldn't

C.both men and women must pay great attention to their clothes

D.neither men nor women didn't have to show interest in clothes

70.Blue-collar workers pay attention to their clothes because______.

A.they extremely concern about the impression their clothes make on their superiors

B.they know clearly that people will judge them on the basis of their clothing

C.they want to impress and influence others

D.they don't want to be laughed at

71.The passage mainly suggests that______.

A.the Americans pay great attention to the importance of clothes

B.now men in America have made more progress in clothes consciousness

C.now men in America care about clothes more than women do

D.the American culture is greatly changing         

题型:多项选择题

因素分析法是依据分析指标与影响因素的关系,从数量上确定各因素对分析指标影响方向和影响程度的一种方法,使用因素分析法需要注意的问题包括()。

A.构成经济指标的因素,必须是客观上存在着因果关系

B.因素替代的顺序性

C.确定替代因素时,必须根据各因素的依存关系.遵循一定的顺序并依次替代,不可随意加以颠倒

D.各因素变动的影响数要绝对的准确

更多题库