Контрольная работа 2, вариант 3

выполнены упражнения согласно заданиям варианта, точный текст заданий ниже

1. Перевести предложения, указать время каждого из них.

1. He usually left home at 7 o clock and got there at 12.

2. She will have finished this report by the end of the day.

3. It will be no entertainment programs today.

4. We have been doing nothing to help him.

5. We are testing the new engine in the laboratory.

6. By that time we had already changed our plans.

7. He never drinks coffee in the evening.

8. The Smiths will have been waiting for you since 10 o clock.

9. Henry had been playing football for over ten years when he gave it up in 1995.

2. Сделать предложения вопросительными и отрицательными.

1. Children were playing football at 7 o’clock yesterday.

2. I shall have finished school by the summer.

3. He studies at the University

4. She had already changed her plans.

5. This airplane crosses the Atlantic in about 10 hours.

6. He left this town yesterday early morning.

7. They were in the theatre last Sunday.

3. Составить предложение, употребив правильный порядок слов.

1. Morning/ you/ time/ get/ what/ in/ the/ did?

2. Will/ they/ leave/ London/ next/ for/ month.

3. Dinner/ night/ have/ what/ last/ you/ for/ did?

4. Shall/ we/ not/ solved/ have/ problem/this/ by/ the month/ of/ the end.

5. His/ celebrated/ birthday/ he/ Sunday/ last.

6.Brother/a/his/ clever/ is/man/very.

7. The/ will /repair/ of/ estimate/ engineer /the/ costs/ the /work.

4. Раскрыть скобки, правильно употребив время глагола, и перевести предложения.

1. Eugene Black (establish) 2 offices for 5 years.

2. Lorenz (graduate) from University in 2003.

3. The “Philips recently (sell) many new models of TV sets.

4. The accountant (write) the Balance Sheet last Thursday.

5. Our employees (work) 8 hours a day.

6. The secretary (talk) to the director at this moment.

7. The representatives of the company (discuss) the program of the conference in the hall now.

8. Where is the Sales Manager? - He (read) a letter.

9. The musician (play) the piano for a whole hour when we came in.

5. Перевести предложения на английский язык

1. Джон Паркер много работал в прошлом месяце.

2. Директор только что принял важное решение

3. Менеджер хочет подписать контракт с французской фирмой.

4. Мы продаем много товаров в этом году.

5. Они решали эту проблему в офисе с 10 до 11 два дня назад.

6. Главный менеджер часто звонит в эту компанию.

7. До понедельника он все еще будет проверять чертежи.

8. Управляющий даст рекламу через 3 дня.

9. Я думал, они были в Риме.

6. Перевести текст письменно и выполнить задания.

NON-FERROUS METALS AND NON-METALLIC MATERIALS

Alloy steels are those in which some alloying element in addition tothe carbon is present in some appreciable quantity. The principal alloying elements used in steel are nickel, chromium, vanadium, molybdenum, manganese, and to lesser extent, copper, tungsten, beryllium and boron.

Because of its high electric conductivity about 60% of copper pro­duced is used in electrical work. Three chief groups of copper alloys used in machine design are brasses (copper-zinc alloys), bronzes (cop­per-tin alloys), and nickel-copper alloys.

Aluminium is one of the lightest metals used for machine construc­tion. It is commonly used alloyed with copper, silicon or magnesium,the world’s lightest structural metal.

Intensive chemical research has created a large number of nonmetallic synthetic materials grouped under the general term of plastics, e.g. bakelite, plexiglass, textile fibres, synthetic rubber and several pro­tective coatings.

Heat-treatment is the process of controlled heating and cooling of metals to change their structural arrangement and to ensure certain de­sirable properties.

Annealing consists of heating the metal to a temperature slightly above the critical temperature and then cooling slowly to produce grain structure, reduce the hardness, and increase the ductility.

Normalizing is a form of annealing in which the material is cooled in the air.

Quenching or rapid cooling from above the critical temperature by immersion in cold water or some other cooling medium, is a hardening treatment.

Tempering consists of reheating the quenched metal to restore duc­tility to some extent and reduce the brittleness.

1. Дать перевод следующих словосочетаний.

добавление углерода; из-за высокой электрической проводи­мости; легированная сталь;структуральные металлы; охлаждение металлов; быстрое охлаждение; уменьшить прочность; погружением в холодную воду; уменьшить хрупкость; восстановить ков­кость (эластичность).

2. Письменно ответить на вопросы.

1. What is the most important non-ferrous metal?

2. What is the difference between brass and bronze?

3. What nonmetallic synthetic materials do you know?

4. What is quenching?

5. What is the difference between annealing and normalizing?

6. What does tempering consist of?

7. What is a hardening treatment?

3. Соединить понятия с их описанием.

1. Heat-treatment

2. Quenching

3. Normalizing

4. Annealing

a. is a form of annealing, in which the material is cooled.

b. is cooling of metals to change their structural arrangement.

c.is rapid cooling.

d. consists of heating the metal to a temperature above the critical temperature.

4. Перевести на английский язык.

1. Основными легирующими элементами, используемыми в стали, являются никель, хром, ванадий, молибден и марганец.

2. Около 60% меди используется в электротехнике.

3. Латунь, бронза и сплавы мели с никелем — основные медные сплавы.

4. Алюминий обычно используется в сплавах с медью, кремнием и магнием.

5. Химики создали много синтетических материалов, которые могут быть использованы вместо металлов.

6. Нормализация — это форма отжига.

7. Закалка — это быстрое охлаждение при погружении вхо­лодную воду.