Read the sentences and answer the questions

1.Heating and ventilation and air -conditioning are three branches of engineering.

What are the three branches of engineering?

2. Air -conditioning maintains comfort with respect to humidity, pu­rity and air motion.

Does heating maintain comfort with respect to humidity, purity and air motion?

3. Basic flame characteristics of fans and motors are some of the as­pects studied in heat research.

What is studied in heat research?

6. Complete the sentences using the words given below:

1 Heating is concerned with___________________

2 Ventilation deal with___________________

3 Air - conditioning is concerned with________________________

4 HPAC engineering is of great significance for industrial purposes as well as for_________________________

5 Big industrial complexes produce HPAC equipment and increase the output of___________________________

6 No factory, school, plant, hospital are possible without_________________

Heat supply, supply and removal of the air, humidity, purity, air mo­tion, human comfort, heating units, fans, blowers, unit air - conditioners.

Make the sentences larger. Add the necessary words, phrases from the active vocabulary so as to enlarge the information.

1.Heating, piping and air - conditioning are three branches of engineering.

2.Different equipment is installed.

3.Tests and experiments are carried out in HPAC engineering.

4.Some scientific aspects are studied in heat research.