为什么要求继电器消耗功率更小?

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问题:

为什么要求继电器消耗功率更小?

考点:动力与电气工程变配电变配电题库
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病历摘要:患者男性,44岁。呕血三日,急诊入院。病人半年来经常腹胀,食欲不振,厌油、恶心、反酸,日渐消瘦。三天前,因饮酒较多、吃冷硬食物后,出现呕血,共三次,前两次较新鲜,量约400毫升,后一次为咖啡样,量约150毫升。体检:血压14/12kPa。消瘦,贫血貌,面颊及前胸部有五枚蜘蛛痣,心肺无异常,肝不大,脾可触及,边缘较韧。上消化道大出血,临床上五种常见的病因是。()

A.应激性溃疡

B.胃十二指肠溃疡

C.贲门粘膜撕裂综合症

D.胃壁动脉瘤破裂

E.门静脉高压症

F.肝内胆道大出血;胃癌

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在手掌面,第4、5掌骨之间,握拳时当小指尖处的腧穴是:()

A.少冲

B.少泽

C.少府

D.少商

E.劳宫

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在下列反应中,所生成的有机物分子内不含C—N键的是(   )

A.由苯制硝基苯

B.由甲苯制TNT

C.由α-氨基酸缩合形成多肽

D.由纤维素制火棉

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第二节完形填空(共20小题;每小题1.5分,满分30分)

  阅读下面短文,从短文后各题所给的四个选项(A、B、C、D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

  Columnist Dave Barry says this about his father:"My dad would try anything - carpentry(木匠活),electrical wiring,roofing and so on.From watching him,I learned a lesson that still 36 to my life today:no matter how difficult a task may seem, 37 you're not afraid to try it,you can do it."

  I learned from my parents the value of "going for it"." 38 ventured(冒险),nothing lost" is the motto of too many of us.Many people are so afraid to 39 that they never venture beyond the familiar."Better to be safe than sorry",has 40 too many people in the cocoon(保护膜) of their 41 zones.

  A delightful 42 tells that Col.Robert Johnson of Salem,New Jersey,announced that he would take a 43 risk.He let the town know that he would 44 a wolf peach on the steps of the country courthouse at noon on September 26,1820. "Why would he take such a chance?" asked the 45 people.

  Scientists and doctors had long declared the wolf peach to be 46 .If the wolf peach was too ripe and warmed by the sun,they told him he would be exposing himself to brain fever.Should he somehow 47 the experience,the skin of the 48 would stick to the lining of his stomach(他的胃黏膜) and 49 cause cancer.

  Nearly 2,000 people 50 the square to see Col.Johnson eat the "poisonous" peach - now known as the tomato.

  Col.Johnson believed his 51 was small,but it must be take if the 52 about the peach were to be 53 .Who has accompished anything worthwhile 54 taking a risk?

  Much like the tortoise it makes 55 only when it sticks its neck out.

  36.A.refers         B.applies       C.tends          D.leads

  37.A.if            B.since         C.although       D.unless

  38.A.Anything      B.Something    C.Nothing        D.Everything

  39.A.fail           B.win          C.succeed        D.leave

  40.A.turned        B.trapped       C.forbidden      D.orced

  41.A.comfortable    B.miserable     C.surprising     D.unimportant

  42.A.novel         B.message      C.joke          D.story

  43.A.private        B.public       C.secret        D.national

  44.A.buy          B.sell          C.eat           D.cut

  45.A.puzzled       B.disappointed   C.angry        D.happy

  46.A.delicious       B.smelly        C.salty        D.poisonous

  47.A.enjoy         B.survive         C.understand  D.know

  48.A.wolf         B.seed           C.peach      D.body

  49.A.eventually     B.firstly          C.lately       D.hardly

  50.A.reached      B.decorated         C.surrounded  D.crowded

  51.A.audience     B.risk            C.fruit        D.size

  52.A.myths        B.ingredients    C.truths         D.prices

  53.A.changed      B.adopted        C.removed      D.grasped

  54.A.without      B.for            C.with         D.except

  55.A.sense        B.trouble         C.room        D.progress

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从南京的“桥粘粘”到上海的“桥塞塞”,再到昆明的“桥垮垮”,在2010年元旦前后近一个月内,一些地方“问题桥”事件频发。这些安全事故频频发生,既有国家安全监管力度不够的原因,更有生产企业自身急功近利利等原因。这表明()

A.必须重视内因作用,也要重视外因作用

B.事物与事物之间都存在因果联系

C.客观符合主观,会给实际工作造成极大的危害性

D.具体事物之间的联系是有条件的,条件不同,其联系的状态也不同

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