一切高低压电气设备,虽已断开电流,但在未开始任何工作之前要进行验电。

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问题:

一切高低压电气设备,虽已断开电流,但在未开始任何工作之前要进行验电。

考点:水轮机调速器机械检修工水轮机调速器机械检修工(中级)水轮机调速器机械检修工(中级)题库
题型:判断题
Four friends are talking about their hobbies. Let’s listen and learn about what their hobbies are.
Wang Ting
    I love painting so much. I began to paint at primary school (小学), I have never stopped. I have sold some of my paintings and I hope more and more people will like my paintings.
Danny
    My hobby is collecting erasers. Isn’t it a little unusual? Why do I like erasers? Because they smell good and they are beautiful. Now I have more than 200 erasers. If you have beautiful erasers, maybe we can trade (交换) them with each other.
Liu Mei
   I like food, so I often travel around the country to eat different kinds of delicious foods.
Li Ming
    Playing basketball is my favourite sport. I often spend my weekends playing it with my friends. I’m a member of the school basketball team. I make a lot of friends while playing basketball.
小题1:Whose hobby is painting?
A.Li Ming’s.B.Wang Ting’s.C.Liu Mei’s.D.Danny’s.
小题2:Danny likes collecting erasers because ________.
A.they are expensive
B.his mother likes erasers very much
C.they are interesting
D.they smell good and look beautiful
小题3:Liu Mei often travels around the country because she wants to ________.
A.make many new friends
B.eat different kinds of delicious foods
C.have a look at the scenery
D.drink different kinds of nice drinks
小题4:What does Li Ming often do on weekends?
A.He often plays basketball with his friends.
B.He often does his homework at home.
C.He often plays computer games at home.
D.He often watches TV with his parents.
小题5:Which of the following is True?
A.Liu Mei has sold some of her paintings.
B.Danny has collected one hundred erasers now.
C.Wang Ting didn’t study painting at primary school.
D.Li Ming makes many friends when he plays basketball.
题型:判断题

回忆(再现)

题型:判断题

     do you think about Hangzhou?[ ]

A. How              

B. Which      

C. Where            

D.What

题型:判断题

下列各项中,属于残疾军人的抚恤待遇的有()。

A.配制辅助器械

B.为残疾军人家属解决工作

C.退出现役的一级至四级残疾军人由国家供养终身

D.为残疾军人安排合适的工作

E.残疾军人死亡,其遗属享受的抚恤待遇

题型:判断题

计算题:如图D-10所示系统中的k点发生三相金属性短路,试用标幺值求次暂态电流。

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