4. а) определите форму инфинитива в предложении; б) предложения переведите.
A. To make computers work fast and correctly is a very significant task.
B. A problem to be solved by a digital computer must be expressed in mathematical terms.
C. The changes in air temperature prove to have affected the operation of the computer. It yields wrong information.
D. Scientists found beta-rays to consist of negative particles.
E. Today scientists are conducting space research in order to study the Earth's space environment and our solar system.
F. Cosmic rays are intense enough to penetrate to the bottom of lakes 1,700 feet deep.
G. F = т × a is one of the equations to be used when we want to calculate changes in speed.
H. Every ton of ordinary water is said to contain about 40 grams of deuterium. At first sight this may seem to be insignificant, however, it should be remembered that the power generating capacity of one gram of deuterium is equal to ten tons of oil.
I. It was for our engineer to decide what kind of computer to utilize for such calculations.