Enclosure

Date: 2015-10-07; view: 630.

Choose the contextual meanings of the words written in bold in Text 3.

LANGUAGE FOCUS

Write a summary of Text 3.

Answer the following questions and give examples.

Correct the following statements if necessary.

Complete the following sentences according to the text.

COMPREHENSION CHECK

1) Local heating is in … in many countries.

2) The smoke and combustion gases will pass up the chimney if …

3) A draught is …

4) … burn gas to produce heat.

5) Electric room heaters pass an electric current through ...

6) Electric heaters give off heat by … and ...

7) … produce a larger proportion of radiant heat.

8) A resistance-type electric heater is called …

1) A draught is provided by the chimney.

2) A draught increases the energy efficiency of a fireplace.

3) Room heaters must be used with a fan to circulate the heated air.

4) Adequate ventilation to the outside should be provided in the case of the room heater usage.

5) Steam and hot-water radiators are hotter than most local sources of heat.

6) A quartz heater warms anyone in the path of its heat rays as well as the air.

1) What does local heating come from?

2) Why is an open fire unsatisfactory?

3) What does a draught do?

4) Where can room heaters be placed?

5) Why must room heaters be vented?

6) What do the wires in electric room heaters resist?

7) Do the heat rays increase the temperature of the air through which they travel?