Question

Help me, please
1. One cycle of an internal combustion engine ......... be defined as the complete series
of events.
a) must
b) may
c) have to
d) ought
2. The cooling system... control the temperature of the engine.
a) should
b) need
c) have to
d) may
3. The tractor is designed to ..... to do the basic cultivation of land.
a) can
b) may
c) be able
d) should
4. The diesel engine .... have a high compression ratio.
a) must
b) should
c) can
d) need
5. Last year our farm... buy new machines.
a) should
b) may
c) can
d) had to
III. Дополните предложения Причастием I или Причастием II и
переведите на русский язык.
1. The efficiency of farm production is one of the problems.... with agriculture that
many countries still face nowadays.
a) associating
b) associate
c) associated
d) having associated
2. “Detonation”, or “knocking”, is an important factor .... engine output.
a) having limited
b) limiting
c) limited
d) being limited
3. Mechanization methods ... in the USA attract the attention of many European
agricultural scientists.
a) applied
b) applying
c) apply
d) having applied
4. .... the most useful machine, the present day tractor finds its use in the wide variety
of farm jobs.
a) Having been
b) Been
c) Being
d) Be
5. .... the hydraulic drive, the machine operator decreases the ploughing depth.
a) Used
b) Having used
c) Being used
d) Using