某交流电电源电压的瞬时值表达式为u=6sinl00πt(V),则下列说法中正确的

题型:选择题

问题:

某交流电电源电压的瞬时值表达式为u=6sinl00πt(V),则下列说法中正确的是(  )

A.用交流电压表测该电源电压时,示数是6V

B.用交流电压表测该电源电压时,示数是6V

C.用此电源给电磁打点计时器供电时,打点的时间间隔为0.01s

D.把标有“6V 3W”的小灯泡接在该电源上时,小灯泡将被烧毁

考点:正弦式交变电流
题型:选择题

物业管理环节的()以物业的接管验收为标志。

A.日常运作阶段

B.前期准备阶段

C.启动阶段

D.策划阶段

题型:选择题

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     1_____. "We have a difficult time controlling our shopping behavior," says Alexander Chemev, a associate

professor of Northwestern University in Evanston. "It's influenced by lots of forces we usually don't take into

account." "2_____"

     We should take account of some of them below.

     The five senses

     What you see; Retailers (零售商) work to present their merchandise (商品) in the best light. "They use

lighting to make something that looks good look even better," Underhill says, "3_____"

     What you hear: If you like the music a store plays, chances are that you'll like the products it sells-and vice

versa, 4_____ That's a because customers respond to the tempo(节奏) of a store's music, says Deborah

McInnis, professor of the USC Marshall School of Business. "Studies show that the slower the tempo, the

slower people walk through the store, so the more they put in their baskets and the more they end up buying.

If the tempo is faster, people walk faster too. They don't stop to look so much, and they don't buy as much."

     What you smell and taste: The sweet arose of roasting chestnuts. Free samples of Christmas cookies. Like

music, those are effective ways of inviting customers into a store and making them feel welcome.

     What you touch: Signs encouraging customers to touch the merchandise are far less common in stores

than signs imploring them not to. "Touching an object can make you willing to pay more for it. 5_____" says

Joann Peck, an associate professor of Wisconsin School of Business.

A. But the rule of thumb should probably be, "If you don't want it, don't touch it."

B. Stores' music, lighting, 'deals' and pricing ranges can all influence what you buy.

C. You may be willing to pay more for a cashmere sweater just because you like how it feels.

D. Retailers often identify potential"impulse buys" and put them close to the checkout stand.

E. Just as music can attract people into a store, it can help to keep them there, or hurry them out the door.

F. They try to engage you with all five senses.

G. Everything tends to look better in the store than it does when you get it home.

题型:选择题

(25分)民族主义是一个历史性的概念,近现代民族主义不断发展。阅读材料,回答问题。

材料一 民族主义直到18世纪西欧资产阶级开始分享或获得全部权力时,才呈现其近

代的形式。西欧资产阶级是以国家的名义分享或获得全部权力的,因此,国家不再是国王、国王的领土和国王的臣民。更确切地说,国家这时由公民组成……但是,随着1 9世纪的逝去,民族主义的性质起了变化。它起初是一种人道的、宽容的信条,这种信条不是建立在各种民族主义运动相竞争的基础上,而是建立在手足之情这一概念的基础上。但是,在19世纪中期以后,它变得愈来愈沙文主义和军国主义。

——摘自斯塔夫里阿诺斯《全球通史》

材料二  梁启超是中国揭示和宣传近代民族主义的第一人。梁氏首次提出了“中 * * ”的概念。(1902年)他发表《论民族竞争之大势》,明确提出:“今日欲救中国,无他术焉,亦先建设一民族主义之国家而已。”                     

——《光明日报》

材料三  1924年2月,孙中山在演讲中说:“列强因为恐怕我们有了这种思想,所以

便生出一种似是似非的道理,主张世界主义来煽惑我们,说世界的文明要进步,人类的眼光要远大,民族主义过于狭隘,太不适宜,所以应该提倡世界主义。近日中国的新青年,主张新文化,反对民族主义,就是被这种道理所诱惑。但是这种道理,不是受屈民族所应该讲的,我们是受屈民族,必先要把我们民族自由平等的地位恢复起来之后,才配来讲世界主义。”

材料四  20世纪末期的世界在民族和民族主义问题上存在的一种新趋势是由欧盟体现的。尽管欧盟在其内部建设中困难重重矛盾不断,正如人们所说建构一个超民族的共同体、形成统一的欧洲认同是如此之难,但欧盟无疑体现着对传统的民族国家和民族主义概念的超越。国内有的学者把欧盟描述为一种新型的民族主义,这也许是基于对欧共体的成立背景及早期情况的考察,当时它东抗苏联集团挑战西拒美国控制的企图,要在“两超”的夹缝中确立欧洲的地位。而欧盟的内部建设意味着人们正在企图克服民族主义给欧洲带来的弊病,“结束上千年来存在于欧洲人之间的相互残杀与争斗以及民族主义的战争”,通过一体化而使欧洲享有和平、繁荣和幸福。

——摘自安东尼·D《全球化时代的民族与民族主义》

(1)结合所学知识,说明18世纪末民族主义呈现近代形态的背景。(4分)根据材料一,比较民族主义在19世纪中期前后的区别。(4分)

(2)根据材料二,指出梁启超表达出怎样的“民族情绪”?(2分)结合所学知识,分析其影响。(2分)

(3)根据材料三,说明孙中山反对世界主义的理由。(4分)对此,孙中山在民族主义问题上提出了什么新主张?(3分)

(4)根据材料四并结合所学知识,评述20世纪末期由欧盟体现的民族主义趋势。(6分)

题型:选择题

箱式变电站可分为气体绝缘封闭式、空气绝缘开关柜式和开关元件组装式三种类型()

题型:选择题

取碱液(NaOH)5mL,用纯水稀释至100mL,并用从c(1/2H2SO4)=0.1000mol/L标准溶液滴定至终点,消耗标准液14.0mL,计算该碱液的物质的量浓度。

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