40. What parts of the text can you define? Do they correspond to the paragraphs? What are the titles to each part?

1. _______________

2. _______________

3. _______________

4. _______________

5. _______________

41. Reread the part of the text dealing with warm-air heating (wah) and do the following tasks.

A. Answer the following questions and give examples.

1. Where does a warm-air heating system warm the air?

2. How does it transmit warm air to each room?

3. What is the function of filters?

4. What else can the system do except of heating the air?

5. Can WAH be used as a part of an air-conditioning unit?

B. What type of heating is pictured? Fill in the scheme with the correct words from the text and fill in the table below.

Warm-Air Heating
Functions
Necessary equipment
Advantages
Key-words
Description

C. Express the information dealing with WAH not more than in two sentences.

42. Reread the part of the text dealing with steam and hot-water heating systems (shwhs) and do the following tasks.

A. Decide whether the following statements are true or false according to Text 5.

1. Steam and hot-water heating systems are cheaper than WAHS.

2. SHWHS are used mainly in private homes.

3. It is easier to control the temperature with SHWHS than with warm-air heating.

4. Radiators give off heat in two ways.

5. Radiators give off most of their heat by convection.

6. The amount of heat given off by a convector depends upon the temperature of the convector.

B. What type of heating is pictured? Fill in the scheme with the correct words from the text and fill in the table below.

Steam And Hot-Water Heating System
Advantages
Disadvantages
Necessary equipment
Key-words
Description

C. Arrange the information given in this part of Text 5 in a few sentences.

43. Reread the part of the text dealing with radiant heating and do the following tasks.

A. Choose the main advantages of the radiant heating system.

1. it affects only the objects it strikes

2. it can be combined with air-conditioning system

3. it provides comfort at a lower room temperature than other heating systems

4. it distributes heat evenly

5. it removes dust particles from the air

B. Fill in the table below using the information from Text 5.

Radiant Heating
Advantages
Disadvantages
Necessary equipment
Key-words
Description

C. Describe radiant hot-water heating according to the scheme given below.

D. Express the information dealing with radiant heating in not more than 4 sentences.