试题与答案

竣工图绘制要掌握基本的制图方法和构造知识外,还应了解有关竣工资料方面的知识,尤其对(

题型:填空题

题目:

竣工图绘制要掌握基本的制图方法和构造知识外,还应了解有关竣工资料方面的知识,尤其对()、()等资料的掌握,是竣工图绘制能否真实、全面反映竣工图效果的关键所在。

答案:

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参考答案:必需氨基酸种类;必需氨基酸数量

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题型:阅读理解

阅读理解。

    Many people like to watch TV. There are allkinds of programs on TV. The soap opera is one of them ,The soap opera was first on the radio in the1920s. Then it started on TV in the 1940s.    

    Why do so many people like to watch soapopera on TV, especially young people? Whatmakes soap opera popular? Let's find out.    

    First, what's happening in the soap operais very different from our life. Everything isperfect in the play. People don't need to worryabout almost anything. People don' t havemoney problems.    

    Second, there are many beautiful girls andhandsome boys in the soap opera. They are socool. They make young people crazy. They makeyoung people happy.  

    Third, the story in the soap opera isusually interesting. It makes people relax after aday's hard work. Even some old people like towatch it, too.    

    But some people don't like it. They thinkthe show is too slow and too long. Do you likewatching soap opera? What do you think of it?

1. The soap opera started on TV______

A. in the  1920s              

B. in the  1930s

C. in the 1940s            

D. in the 1950s

2. What's happening in the soap opera is______ our life.

A. very different from  

B. the same as

C. as interesting as      

D. crazier than

3. ______ in the soap opera make young people crazy.  

A. The money problems

B. The perfect stories

C. The interesting stories

D. The beautiful girls and handsome boy.

4. People like to watch soap opera because ______.

A. the show is too long and too slow

B. it can make people sad

C. it can make people relax

D. it started on TV early

5. Which of the following is NOT true according to the passage? 

A. The people in the soap opera don't need to worry about anything.

B. All people like to watch soap opera.

C. The story in the soap opera is usually interesting.

D. The girls and boys in the soap opera are usually cool.

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题型:问答题

如图所示,竖直平面内有两根很长的金属导轨MN、PQ,处于B=0.5T的水平匀强磁场中,两导轨中连有两个电阻均为0.2Ω.额定功率均为5W的小灯泡,如图所示.质量m=50g、长L=0.5m、电阻r=0.2Ω的金属棒ab可沿导轨做无摩擦滑动,导轨电阻不计.导轨与金属棒接触始终良好.则:

(1)棒要以多大速度向上移动,才能使灯泡正常发光?

(2)若让金属棒自由下落,当速度达到稳定后灯泡能否正常发光?

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