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3. Write down all the nouns from the text in plural.

4. Complete the table (pay attention to degrees of comparison):

atmospheric

the smallest

basic

fundamental

the largest

Dual

Rapid

relative

the most

insufficient

5. Write down all irregular verbs and their three forms. Copy them in your exercise-books.

6. Make the following sentences negative and pat into the interrogative form:

  • Heating is to prevent too rapid loss of heat from the body.

  • Heating and ventilation are two branches of engineering.

  • The human being also loses heat by conduction.

  • There are two most common systems of heating-hot water and steam.

  • The steam gives up its heat to the radiators and the radiator to the room and cooling of the steam condenses to water.

  • Panel heating is a method of introducing heat to rooms in which emitting surfaces are usually completely concealed in the floor, walls or ceiling.

  • The heat is disseminated from such panels partly by radiation and partly by convection.

  • Air-conditioning is closely related to both heating and ventilation.

  • Some old concepts of heating have been gradually changed since engineers obtained more precise knowledge about how the body loses heat.

7. Translate from Russian into English:

    • Отопление и вентиляция — две связанные между собой

отрасли.

    • Отопление предназначено для нагревания воздуха до определенной температуры.

    • Вентиляция охлаждает и очищает воздух.

    • В наше время существует два вида систем отопления.

    • В городах широко применяется система центрального отопления.

    • В каждом радиаторе находится воздушный клапан для поддержания температуры.

    • Нагревательные элементы скрыты в полу, стенах или потолке.

  • Потолочные обогреватели дают больше тепла, чем все остальные.

  • Перед установкой обогревателя необходимо учесть поло­жение мебели в квартире.

  • Отопительная система состоит из котлов, труб и радиаторов в квартирах.

8. Поставьте глаголы, стоящие в скобках, в требуемом по смыслу времени:

1. The ship (to go) to the north when a storm (to break) out. 2. By this time next year you (to graduate) from the Institute.3. He (to become) a pilot now. 4. They (to drive) at about forty miles an hour when the accident (to happen). 5. Although the weather (to be) fine during the last few days, this summer is not a good one on the whole. 6. When I (to get) to the station, I (to learn) that the train (to leave) a few minutes before. 7. He generally (to play) tennis very well, but today he (to play) very badly. 8. all last week he (to prepare) for the examinations. 9. That man (to teach) in this school since 1932. 10. Water (to change) into ice when the temperature (to drop) below zero. 11. We (to see) your brother a week ago, but we not (to see) him since then. 12. It (to rain) every day since we (to come) here.