人们将()称为第四种发电方式。 A.水电 B.火电 C.核电 D.燃料电池

题型:单项选择题

问题:

人们将()称为第四种发电方式。

A.水电

B.火电

C.核电

D.燃料电池

考点:趣味知识竞赛趣味科技知识竞赛趣味科技知识竞赛题库
题型:单项选择题

根据英文释义及首字母提示,完成下列单词的拼写。

1. c_____ (the place where you can see the films)

2. s_____ (the thing like the face of a computer or TV)

3. w_____ (not having)

4. s_____ (a place for sitting)

5. s_____ (all the time)

题型:单项选择题
从安全用电的角度出发,下列做法存在安全隐患的有(   )
A.用电器金属外壳应该有接地线

B.不要在同一插座上同时使用几个大功率用电器

C.要定期检查用电器插头,特别是大功率用电器插头

D.洗衣机、洗碗机等易潮湿用电器不用接地线

题型:单项选择题
A person may have a false idea about himself that will stop him from doing good work.
He may have the belief that he is unable to do it.A child may think he is  36  because he doesn’t understand how to make  37  use of his mental gifts.Old people may have a false idea that they are unable to learn things new because of their  38
A person who believes that he is stupid will not make a real  39  because he feels that it would be useless.He won’t go at a job with confidence necessary for  40 .Besides, he won’t work his hardest way, even though he may think he is doing so. 41 , he is likely to fail, and the failure will  42  his belief in his incompetence(无能) in turn.
Alfred Alder, a famous doctor, had  43  like this.When he was a small boy, he had a poor 44  in maths.His teacher told his parents he had no ability in maths in order that they would not  45  too much of him.In this way, his teacher and parents  46  the idea.He  47  their false judgment of his ability, feeling that it was useless to  48 .Then, he was very poor at maths,  49  as they expected.
But one day everything changed.He worked out a problem which  50  of the other students had been able to solve.He  51  in solving the problem which gave him confidence (信心).Soon he became especially good at  52
Alder now  53  with interest, determination and purpose.He not only proved that he could learn maths well, but luckily he learned it  54 , not too late.From his own experience, we can tell that if a person goes at a job with determination and purpose, he may  55  himself as well as others by his ability.
小题1:
A.cleverB.shyC.uselessD.stupid
小题2:
A.bigB.fullC.highD.great
小题3:
A.age B.abilityC.brain D.knowledge
小题4:
A.decision B.planC.effortD.promise
小题5:
A.workB.study C.improvementD.success
小题6:
A.TrulyB.ReallyC.HoweverD.Therefore
小题7:
A.lead to B.strengthenC.improveD.get rid of
小题8:
A.an experienceB.an exampleC.a thoughtD.a story
小题9:
A.stateB.mind C.startD.ending
小题10:
A.blameB.expectC.getD.win
小题11:
A.developedB.organizedC.discoveredD.found
小题12:
A.brokeB.refusedC.doubtedD.accepted
小题13:
A.manageB.argueC.tryD.act
小题14:
A.onlyB.almostC.justD.then
小题15:
A.noneB.all C.some D.most
小题16:
A.brokeB.succeededC.failedD.believed
小题17:
A.physicsB.medicineC.EnglishD.maths
小题18:
A.studies B.worksC.playsD.graduates
小题19:
A.earlyB.deeplyC.laterD.simply
小题20:
A.discourageB.loveC.surpriseD.disappoint
题型:单项选择题

采伐防护林和特种用途林中的国防林、母树林、环境保护林、风景林有什么规定?

题型:单项选择题

在同一介质中两列相干的平面简谐波的强度之比是I1/I20=4,则两列波的振幅之比是()。

A.A1/A2=4

B.A1/A2=2

C.A1/A2=16

D.A1/A2=1/4

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