Writing

I. Study the picture. Describe the composition of:

a) fuel and air mixture:

b) aluminium alloy in engine fins

Replace the percentage (…%) with expressions of quantity.

II. Translate the text into Russian. Use your dictionary if necessary.

As you know there are three types of internal combustion engine¹ which are very important for our industrial life. These are, of course, the petrol engine, the diesel engine and the gas turbine. They have a lot in common. They all use liquid fuel, produce mechanical work and also exhaust gases. However there are many differences in the principles of their construction and operation.

Let's consider the gas turbine now. It has five characteristics. They are:

• a high power-weight ratio²

• a very small number of moving parts (in comparison with the petrol engine and the diesel engine)

• independent of major water supplies

• rapid starting (≈30 seconds to the full power)

1. двигатель внутреннего сгорания

2. мощность на единицу веса

Unit Five. Instrument Making Section a. Measuring Instruments Lead-in

I. What measuring instruments do you know? List as many as you can. Compare your list with that of your groupmates.

II. Listen to the following dialogues and learn how to name different devices in English.

1 . Teacher: I say, Paul. What is there on the table?

Paul: There is a device there.

Teacher: What is it called, Paul?

Paul: To my mind, it is called a manometer.

Teacher: Yes, right you are. And what is a manometer?

Paul: I believe it's an instrument for measuring pressure, isn't it?

Teacher: Yes, that's right. Look, it has a scale and a pointer.

Paul: Well, I see.

2 . Julia: Look here, Peter! What is there on the shelf?

Peter: There are some measuring instruments there.

Julia: What are they called?

Peter: They are called thermometers.

Julia: And what is a thermometer?

Peter: Well, a thermometer is an instrument for measuring temperature of different bodies, liquids and gases.

Julia: OK, I see. Thank you, Peter.

Peter: You are welcome.

III. That's how we attract somebody's attention and express gratitude in English. Study this table.

HOW TO ATTRACT ATTENTION:
Well I say Look here	Listen Look You know
HOW TO EXPRESS GRATITUDE:
Thank you. Thanks. Many thanks. Thank you so much. Thanks a lot.		Not at all. You are welcome. That's all right. Don't mention it.

IV. Complete the dialogues using the phrases to attract attention and express gratitude.

1. – … Roman! What is there in the box? – … – What … … called? – …, it's called …

2. – … – It's a very important thing for a car. – … – … . It's called an ammeter. – … – Well, it's a special instrument in a car for … . – … . – … .