1. Підкресліть модальні дієслова та їх еквіваленти. Перекладіть.

1. The calibrated balance can then be used to measure any unknown force.

2. A helicopter is able to rise vertically only because its propeller sets a stream of air into downward motion.

3. At ordinary temperatures and over temperature intervals which are not too great, specific heat may be considered constant.

4. Thus we had to use gaseous heavy hydrogen for our experiments.

5. Elastic limit is the point beyond which one should not attempt deforming the body if it is to return to its original condition.

6. This radiation dose may damage the cells.

7. Due to the application of satellites we shall be able to televise programs to vast territories.

8. Electrolysis may be defined as a process by which a chemical reaction is carried out.

9. The frequency of an oscillator is to be kept constant by means of an oscillating crystal.

10. To provide the required data a satellite has to be equipped with a transmitter containing a very stable oscillator.

11. This defect may account for the discrepancy in the results.

12. To obtain better results you should dilute the acid.

13. But for the lack of precise measuring instruments these events might have been detected much earlier.

14. These studies should have been resumed.

15. Payment is to be made against shipping documents by an irrevocable Letter of Credit with NBA Bank, Toronto.