Переведите следующие предложения на русский язык. Обратите внимание на модальные глаголы: to have (to), to be (to). 1). The machine tools are to be repaired at the end of th

Переведите следующие предложения на русский язык. Обратите внимание на модальные глаголы: to have (to), to be (to). 1). The machine tools are to be repaired at the end of th e month. Станки должны быть отремонтированы в конце месяца. 2). Carbon, silicon, phosphorus and sulphur have to be withdrawn from pig iron to obtain steel. Нужно удалить углерод, кремний, фосфор и серу из чугуна в чушках, чтобы получить сталь. (Углерод … должны быть удалены…) 1. Powder metallurgy is to increase the life of different tools considerably. 2. Engineers are to study the properties of engineering materials before constructing any structures. 3. Mendeleyev had to work hard to make up his Periodic Table. 4. Corrosion resistance of marine metallic constructions is to be very high. 5. Much has to be done to protect nature from pollution. 6. Ores have to pass through the process called smelting before pure metals are obtained. 7. In designing equipment engineers are to take into acount all possible stresses that may develop during operation. 8. Alloying has to be used to improve the properties of metals. 9. The quality of metals is to be controlled by electronic devices. 10. Scientists are to begin their experiments only after careful collecting all necessary data.