Упражнение 9

 

  1. Above certain critical temperature changes take place in the molecular structure of a metal.
  2. At present they are studying various aspects of this problem.
  3. Having obtained the necessary results, we stopped our experimental work.
  4. Are the principles of television complicated?
  5. By counting the number of waves in a certain period, a very accurate measure of time can be defined.
  6. The melting point of aluminium is 657°C.
  7. Electrical charges are known to be positive and negative.
  8. Electrons leaving the surface, the metal becomes positively charged.
  9. Is every student present at the lecture today?
  10. For him to have done these experiments is a great success.
  11. Gamma rays have no electric charge.
  12. The capacities of these stations range from 600 to 700 kilowatts.
  13. In what fields is the use of lasers highly promising?
  14. Obtaining new data engineers can improve their knowledge.
  15. One can make matter vibrate in different ways.
  16. Robots can't be considered as substitutes for men.
  17. Scientists have to work hard to create a new atomic technique.
  18. What did it give birth to?
  19. In testing the devicesthey found some serious faults.
  20. Speaking about the new method of work the engineer told us many interesting details.
  21. The action of semiconductor devices was understood well.
  22. The discovery of radium was followed by other important inventions.
  23. At airports everywhere we shall find microwaves used with radar equipment to detect planes in the air, or guide them in to land.
  24. In our country great progress has been achieved in developing all branches of science and engineering.
  25. Minsk has become a well-built city with lots of new avenues, big plants and factories.
  26. But for the atmosphere no life would be possible on the Earth.
  27. Could these calculations have been performed in such a short period without a computer?
  28. Did you tell him that I should let him know the date of the conference?
  29. We suggested that his project be discussed in detail.
  30. The technician will have recorded the data before you come.
  31. We must compare our data with those that have been obtained by other investigators.
  32. The worker who is repairing the machine is very skilled.
  33. The measurements that must be made should be accurate enough.
  34. The higher we go into the atmosphere, the thinner the air becomes.
  35. They would finish the work in time, provided they had the necessary material.
  36. Unless it is too late, we shall go there.
  37. Some record must be kept of where the file of information has been stored.
  38. It was Einstein who provided a new conception of time, space and gravitation.
  39. It was in the 20th century that electronic computers appeared.
  40. Nanomedicine's nanorobots are so tiny that they can easily traverse the human body.