《汽车专业英语》期末试卷附答案第1套

performance directly affects the car's power, economy, reliability, safety, comfort and emissions.

3、In addition, the car body is the shell of the whole car, which can reflect the characteristics of the car's appearance image most intuitively, which determines that the modern car body design pays great attention to the external shape to meet the aesthetic requirements of the car shape, and better develop a car market.

4、A double overhead cam engine has two cams per head. So in-line engines have two cams, and V-type engines have four.

5、所以冷却系统的另一个重要作用是让发动机尽快的升温，并保持在稳定的温度范围内。

.

三、Answer the following questions in English. (3×5’)

1、Why do we need the cooling system in an IEC（内燃机）?

2、What is the function of the braking system?

3、What’s the displacement of an engine?

四、Choose the right answer. (10×2’)

1. What do almost all cars use to convert gasoline into motion?

A. one-stroke combustion cycle

B. two-stroke combustion cycle

C. three-stroke combustion cycle

D. four-stroke combustion cycle

2. A car engine’s job is to .

A. convert fuel into heart

B. convert fuel into motion

C. convert fuel into exhaust

3. A car uses a four-stroke engine. The four strokes are .

A. intake, compression, ignition and exhaust

B. injection, rotation, ignition and exhaust

C. injection, carburetion, rotation and exhaust

4. With the at the bottom of the cylinder, the exhaust valve opens to allow the

burned exhaust gas to be expelled to the exhaust system.

A. piston

B. valve

C. camshaft

D.crankshaft

5. According to the method of ignition of the air-fuel mixture, engines are divided into .

A. gas engine and steam engine

B. gasoline engine and diesel engine

C. external combustion engine and compression ignition engine

D. internal combustion engine and diesel engine

6. What is the core of a car’s engine?

A. The cylinder

B. The spark plug

C. Windshield-washer fluid

D.Exhaust

7. Which statement about cylinder head is fault?

A. The cylinder head is bolted to a very flat surface above the cylinder portion of the block.

B. The cylinder head is cast into one piece from iron only.

C. The cylinder head forms the upper portion of the combustion chamber.

D. The cylinder head is used to hold the valves, and it has ports to allow air, fuel and exhaust to move through the engine.

8. The crankshaft and connecting rod converts energy into energy used to drive the vehicle.

A. thermal, mechanical

B. mechanical, thermal

C. kinetic, mechanical

D. mechanical, kinetic

9. What causes a car to burn and lose oil?

A. Lack of gas

B. Radiator trouble

C. A failing exhaust system

D. An old engine with piston rings that no longer seal the cylinder and piston properly.

10. What is the heart of the lubrication system, which is located in the oil pan on the