试题与答案

有关变桨柜中主开关Q1作用,下列说法中正确的是() A.变桨控制柜内超级电容充电器3

题型:单项选择题

题目:

有关变桨柜中主开关Q1作用,下列说法中正确的是()

A.变桨控制柜内超级电容充电器3³400VAC电源输入控制

B.桨电机冷却风扇、散热器冷却风扇、柜体内加热器的230VAC电源输入控制

C.由充电器输出或超级电容供电的逆变器内部60VDC控制电源输入

D.柜体内由60V/24VDC/DC变流器的电源输入

E.以上都对

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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题型:阅读理解

阅读理解。

Mr Wise,

     I'm a slow (迟钝的) student. Most of my classmates are much better than me. So I usually get stressed

 out. Although I spend much time studying for the tests, I can't get good grades. Sometimes my father

 gives me some help. He tells me not to worry about it. But it doesn't work. What do you think I should

 do?

                                                                                                                               Xiao Ming

Dear Xiao Ming,

     Many famous people were not so good when they were young, Einstein, a famous scientist, did poorly

 in his studies when he was a 12-year-old boy, But he did a lot for the people in the world at last, When I

  was at your age, didn't do well at school. But I kept working hard and I succeeded at last, You should

 take it easy and try your best. Tomorrow is another day. I believe you can do better.

                                                                                                                                   Mr Wise

1. Xiao Ming feels worried because _____.

     A. he has a headache

     B. he doesn't want to work hard

     C. he doesn't like going to school

     D. he is not as good as most of his classmates

2. Xiao Ming wrote this letter to_____ .

     A. ask for some help

     B. find a pen pal

     C. tell his father his problem

     D. let all his classmates know it

3. Mr Wise wrote about a famous person to _____.

     A. make Xiao Ming angry

     B. make Xiao Ming feel better

     C. show how much he knows

     D. show that he hates Einstein

4. In Mr Wise's letter, "Tomorrow is another day. " means "_____",

     A. Tomorrow is the weekend

     B. One can get good grades tomorrow

     C. Tomorrow is the same as today

     D. There are a lot of hopes in our lives

5. From the second letter, we know Mr Wise might be _____ before.

     A. a doctor

     B. a scientist

     C. a slow student

     D. Xiao Ming's best friend

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