Y/YY型连接比Y/Y型连接的变压整流器()A、输出电压脉动大一倍 B、输出电压高一

题型:单项选择题

问题:

Y/YY型连接比Y/Y型连接的变压整流器()

A、输出电压脉动大一倍

B、输出电压高一倍

C、承担负载电流大一倍

D、输出电压脉动小一倍

考点:民用航空器维修执照考试飞机电气系统(AV基础)飞机电气系统(AV基础)题库
题型:单项选择题

阅读理解。                 

     Hua Luogeng,the famous Chinese mathematician,was born in Jintan County(县),Jiangsu Province in

l910.When he was young,he showed great interest in mathematics.In 1931,Hua Luogeng became an

assistant in the Maths Department of Qinghua University, where he spent eve moment he could spare

studying,so he finished his maths course all by himself in only 13 months!

     In 1936,he went to Cambridge University in Great Britain forfurther study.In 1950 shortly after new

China was founded,he returned from USA.His words“I'm Chinese.I'll do my best for my motherland.”are

still remembered by the Chinese people.

     Hua Luogeng devoted(奉献) all his life to the maths study and won the great fame for our country.

     In 1985, he died of heart-attack while he was giving a speech in Japan.

1. When he was _____ years old, he began working in Qinghua University.   

A. a little boy

B. twenty-one

C. old enough

D. thirty-one

2. First he went to _____, then to _____.

A.the USA; Great Britain

B.Great Britain; Japan

C.Great Britain ;the USA

D.Japan ;the USA

3. He was interested and good at _____.

A.mathematics

B. politics

C. chemistry

D. Chinese

4. Why do the Chinese people still remember him and his words?

A.Because they love him, who loved his motherland so dearly.

B.Because they like his words, which were beautiful written.

C.Because they need him, who was well known in the USA.

D.Because his name and words are simple and they can be easily remembered.

5. After reading this passage we _____.

A.can be relaxed

B.will be very sad

C.may fet some information

D.shall laugh

题型:单项选择题

对挫伤正确的描述有()。

A.系没有皮肤开放创口的软组织损伤

B.肌肉、骨膜和关节等也可同时受伤

C.血管破裂可导致组织内出血,形成瘀斑或血肿

D.皮肤可有裂口

E.血肿可继发感染形成脓肿

题型:单项选择题

Our physics teacher and English teacher always give their lessons in a lively and clear way,____ greatly benefits us students.

A.from which

B.in which

C.that

D.which

题型:单项选择题

       我的启蒙学堂叫竺西小学,它坐落在一个江南小镇的街外。我还依稀记得那狭窄的天井、晦暗的教室和没有座位、只有一个石砌的小“舞台”的礼堂……记得在这个礼堂里我们有过永生难忘的聚会。     

1.写出下列词语的反义词。     

      狭窄(      )    晦暗(      )     

2.作者描写竺西小学哪些事物?

                                                                                                  

3.请你展开丰富的想象,将省略号的内容补充完整。

                                                                                                                                                 

                                                                                                                                                  

题型:单项选择题

甲于某日买得一处房屋,在办理产权登记前将房屋出卖并交付给乙,办理产权登记后又将该房屋出卖给丙并办理了所有权移转登记。丙受丁胁迫将房屋出卖给丁,并完成了移转登记。丁旋即将房屋出卖并移转登记于戊。

若丙以受胁迫为由,主张撤销丙丁的买卖房屋的合同后,下列说法正确的是:( )。

A.丙可以向丁要求返还房屋

B.丙可以向丁要求赔偿损失

C.丙可以向戊要求返还房屋

D.丙不可以向丁或戊要求返还房屋

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