Максимальный КПД идеального теплового двигателя равен 20%. Найдите температуру нагревателя, если температура холодильника 27 °С.

1. shouldn't
2. don't have to
3. had to
4. should
5. mustn't
6. can
7. was able to
8. must
9. could

1.shouldn't
2.don't have
3.had to
4.should
5mustn't
6.can
7.could
8.must
9.could