《汽车专业英语》期末试卷附答案第8套

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2、Automotive electrical systems are one of the important components of a car. Its performance directly affects the car's power, economy, reliability, safety, comfort and emissions.

3、传送到车轮推进车辆运动的能量，至少来自两种不同的能量转换装置。

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。

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

1、How to define a hybrid car?

2、What is the function of the braking system?

3、What’s the displacement of an engine?

4、What are the components of electrical equipment elements?

5、Please write down the definiti on and the compositions of an “engine”.

四、Choose the right answer. (5×2’)

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

五、Reading Comprehension (4×5’)

Directions: After reading the following passage, make the correct choice.

A computer is a machine designed to perform work mathematically and to store and select information that has been saved in it. It is run by either mechanical or electronic means. These machines can do a great deal of complicated work in a very short time. A large computer, for example, can add or subtract nine thousand times a second, or divide five hundred times a second. Its percentage of error is about one in a billion digits. It has been estimated that human beings making calculations average about one mistake per two hundred digits.

The heart of an electronic computer lies in its vacuum tubes, or transistors. Its electronic circuits work a thousand times faster than the nerve cells in the human brain. A problem that might take a human being two years to solve can be solved by a computer in one minute, but in order to work properly, a computer must be given instructions and it must be programmed. Computers can be designed for many specialized purposes. They can be used to prepare patrols, guide airplane flights, direct traffic, even to play chess. Computers play an important role in automation process in plants and factories throughout the world.

1. A computer is a machine designed to ______________________.

A. perform work mathematically