问题 问答题 简答题

触电会对人体外部造成哪几种伤害?

答案

参考答案:

灼伤,拉开通过大电流的开关或出现短路放炮事故可能造成弧光烧伤手脸。

电路,人体触电后在皮肤上产生了圆形或椭圆型的肿块,呈明显的白色和灰色。

金属浅伤,是指大电流通过导体时使导体融化喷溅在人体上,融化金属颗粒进入人体。

击穿,常常是人体触碰和接近高压带电部位,

其触电部位被高压电击穿成黑窟窿,这一现象称为击穿。

填空题

请根据句意用适当的介词填空。

1. Bob lives            China            his parents.

2. Hainan is far            Beijing.

3. We will leave            the afternoon            February 1st.

4. It's about 100 kilometers            this city            your city.

5. They stayed            these children            two weeks.

6. I have pairs            shoes.

7. Danny gets            the train and sits            his seat.

8. The boy is pointing             the bird            the sky.

9. What's the red thing             there?

10. I can see a big pear             the top __________ the tree.

11. How much             a bike?

12. Please take care             your clothes.

13. Are you looking             your cat? I saw it sleep in a tree.

14. Let's put a bandage             your arm.

15. Put the film             your camera, Jack.

16. Wan Hua sits             my left.

17. Please put the stamp             the top, right corner             the postcard.

18. Peter is writing some postcards             his friends.

19. We'll go there             a bus             Tuesday.

20. When did you arrive              Canada?

21. They looked             everything in the shop.

22. Can you walk             school             the big box?

23. I like playing             my dog             home.

24. — What ___________ flying kites on the playground?

      — That's a good idea.

25. This gift is             you, Dad.

26. What happened             these people?

27. Jenny and Danny are leaving             Beijing ___________ Shanghai tomorrow.

28. Could you take a picture             us?

29.             the way, I had a good time             you in Dalian.

30. Go            this street and turn left              the traffic lights.

名词解释