渝粤教育四川开放大学-电大省开平台《汽车故障诊断技术（A）(省)》形考任务阶段性测验参考答案(1)

四川开放大学-电大省开平台《汽车故障诊断技术（A）(省)》形考任务阶段性测验参考答案

1.  Compared with the fan on older vehicles, the advantage of the electric fan is that ( ).

A. there is no frictional power loss

B. there is no fan belts

C. it is driven by the camshaft

D. both A and B

答案是：D. both A and B

5.  What type of material used is determined exactly by ( ).

A. the stress

B. load temperature

C. aging qualities

D. all of the above

答案是：D. all of the above

4.  There are two basic types of engine valves:( ).

A. the intake valve and the inlet valve

B. the intake valve and the inlet valve

C. the output valve and the inlet valve

D. the exhaust valve and the output valve

答案是：B. the intake valve and the inlet valve

2.  A valve opens and closes ( ) times per mile.

A. more than 2,000

B. less than 2,000

C. 2,000

D. 100,000

答案是：C. 2,000

3.  The function of the primary windings is to ( ).

A. transmit the high voltage from the coil to the spark plug.

B. capture the voltage

C.  produce a magnetic field

D. change the electrical energy into a magnetic field

答案是：

7.  The spark ignition engine can change the ( ) contained in fuel into kinetic energy.

A. chemical energy

B. physical energy

C. electrical energy

D. solar energy

答案是：

6.  The purpose of valve springs is to ( ).

A. keep valves close when the camshaft is not lifting the valve.

B. keep valves open

C. keep valve float

D.  keep valves bounce

答案是：

8.  According to the location of the camshaft, the valve trains are divided into overhead camshaft type and ( ).

A. valve seat

B. valve guid type

C. side camshaft type

D. intake valve and exhaust

答案是：

9.  Within the gasoline or the diesel engine, about ( ) of the energy is used to drive the vehicle.

A. 25%

B. 33%

C. 9%

D.

all of  the above

答案是：

10.  The theoretical ideal for complete combustion is a mass ratio of ( ).

A. 1:14.7

B. 14:1.7

C. 7:14.1

D. 14.7:1

答案是：

2.  electronic injection system 意思是机械燃油喷射系统

A. 错误

B. 正确

答案是：

1.  electronic ignition system 意思是电子点火系统

A. 错误

B. 正确

答案是：

3.  timing advanced 意思是正时延迟

A. 错误

B. 正确

答案是：

5.  clutch pedal 意思是离合器踏板

A. 错误

B. 正确

答案是：

4.  oil sensor 意思是机油冷却器

A. 错误

B. 正确

答案是：

6.  nonchargeable 意思是不可在充电的

A. 错误

B. 正确

答案是：

8.   exhaust gas turbochargers 意思是废气涡轮增压器

A. 错误

B. 正确

答案是：

7.  cold starting 意思是热启动

A. 错误

B. 正确

答案是：

9.  muffler 意思是消声器

A. 错误

B. 正确

答案是：

12.  inertia engaged motor 意思是预啮合电机

A. 错误

B. 正确

答案是：

11.  oil bath air filter 意思是干式空气滤清器

A. 错误

B. 正确

答案是：

10.  air-cooling system 意思是空气冷却系统

A. 错误

B. 正确

答案是：

15.  pressure regulator 意思是调压器

A. 错误

B. 正确

答案是：

14.  dashboard 意思是仪表板

A. 错误

B. 正确

答案是：

13.  secondary winding 意思是初级线圈

A. 错误

B. 正确

答案是：

1.  When the tire is on a dry asphalt surface, the maximum frictional force of the tire ( without sliding) is usually between ( ) of the radial load.

A. 60%-90%

B. 60%-70%

C. 80%-90%

D. 50%-60%

答案是：

2.  The ( ) brake was adopted in a two-ton-plus automobile to safely stop from the 70m/h and 80m/h highway speeds of the time.

A. internal expanding-shoe

B. service

C. external expanding-band

D.  disc

答案是：

3.  By the method of changing the gear ratio,the transmissions are divided into ( ),stepless, and combined transmissions.

A. fixed-ratio

B. multiple-speed

C. five-speed

D. fixed-axle

答案是：

5.  Unlike internal expanding-band brakes, the internal expanding-shoe brakes replace the flexible brake band with ( ).

A. small brake shoes

B. spinning discs

C. rigid brake shoes

D. large brake band with a suitable friction material

答案是：

4.  The ( ) brake was designed to solve the problem that small shoes would overheat or wear out, and braking power would be lost.

A. internal expanding-band

B. external contracting-band

C. disk

D.  interal expanding-shoe

答案是：

8.  In the internal expanding-band brake, the band inside of the brake drum is actuated by a ( ).

A.  rotating cam

B. lever

C. brake shoe

D. rotor

答案是：

6.  In modern transmissions of general-purpose trucks and bused, the gear ratio varies between ( ).

A. 5.0 and 8.0

B. 10 and 20

C. 3.0 and 4.5

D. 6 and 16

答案是：

7.  According to the location of shafts, the transmissions can be with foxed-axle shafts,( ),and of combined type.

A. multi-shafts

B. three-shafts

C. two-shafts

D. rotating-axle shafts

答案是：

10.  The tire loads include three load groups: side load, radial load and ( ).

A. vertical load

B.  traversal load

C. tractive load

D. internal load

答案是：

9.  The first type of known vehicular brakes is ( ).

A. chariot brake

B. locked wheel

C. external contracting-band brake

D. internal expanding-band brake

答案是：

1.  automatic transmission 意思是自动变速器

A. 错误

B. 正确

答案是：

3.  front-engine front-drive 意思是发动机前置前轮驱动

A. 错误

B. 正确

答案是：

2.  forward gear 意思是倒挡

A. 错误

B. 正确

答案是：

5.  handling characteristics 意思是操纵性能

A. 错误

B. 正确

答案是：

6.  steering linkage 意思是齿轮机构

A. 错误

B. 正确

答案是：

4.  emergency flasher switch 意思是雨刷开关

A. 错误

B. 正确

答案是：

7.  short-long arms 意思是不等长双横臂

A. 错误

B. 正确

答案是：

8.  helical wheel 意思是螺旋齿轮

A. 错误

B. 正确

答案是：

9.  propeller shaft 意思是传动轴

A. 错误

B. 正确

答案是：

11.  driving member 意思是从动件

A. 错误

B. 正确

答案是：

13.  constant velocity joint 意思是球叉式万向节

A. 错误

B. 正确

答案是：

12.  performance vehicle 意思是特种车

A. 错误

B. 正确

答案是：

10.  longitudinally 意思是横置地

A. 错误

B. 正确

答案是：

14.  coast in neutral 意思是空挡惯性滑行

A. 错误

B. 正确

答案是：

15.  pneumatic spring 意思是扭力弹簧

A. 错误

B. 正确

答案是：

3.  In a head-on collision with a fixed obstacle at ( ) km/h, a three-point seat belt can only offer limited protection.

A. 50

B. approx.60

C. 40

D. above 40

答案是：

1.  The ECU uses ( ) to measure the deceleration due to the collision and calculate the change in speed.

A. the acceleration sensor

B. the airbag

C. the sensor connection

D. the belt strap

答案是：

2.  The condition of ( ) means  that the smooth tire rides up on the surface water.

A. hydroplaning

B. sliding

C. low-speed harshness

D. slipping

答案是：

4.  Radial tires were first used on ( ) because they produce good steering sensitivity.

A. passenger vehicles

B. trucks

C. sports cars

D. race cars

答案是：

6.  In a collision, the whole procedure of airbag's inflation and deflation takes nearly ( ).

A. 0.1second

B. 1minute

C. 1 sencond

D. 0.1 minute

答案是：

5.  By retracting and tightening the belt strap, the ( ) compensates for belt slack and film-reel effect in a collision.

A. airbag

B. plunger

C. shoulder belt tightener

D. fast-acting lock

答案是：

9.  The distance between the centerline of the rim and the mounting face of the disc is called ( ).

A. the steering sensitivity

B. the resonant frequency

C. the slip angle

D. the wheel offset

答案是：

8.  The function of ( ) is to hold the occupants in their seats when the vehicle hits an obstacle.

A. tightener

B. seat belts

C. fast-acting lock

D. airbag

答案是：

7.  The ( ) has two sets of passages: air passages and refrigerant tubes.

A. receiver

B. evaporator

C. condenser

D. compressor

答案是：

10.  The ( ) tire has the greatest steering sensitivity.

A.  bias

B. radial

C. radial ply

D. asymmetric

答案是：

3.  high beam 意思是近光灯

A. 错误

B. 正确

答案是：

1.  understeer 意思是过度转向

A. 错误

B. 正确

答案是：

4.  negative plate 正极板

A. 错误

B. 正确

答案是：

2.  maintenance-free battery 意思是免维护电池

A. 错误

B. 正确

答案是：

7.  acceleration sensor 意思是加速度传感器

A. 错误

B. 正确

答案是：

5.  side impact detection 意思是侧向加速度

A. 错误

B. 正确

答案是：

6.  receiver 意思是储液器

A. 错误

B. 正确

答案是：

9.  halogen sealed beam 意思是标准密封光束

A. 错误

B. 正确

答案是：

8.  tread pattern 意思是胎面花纹

A. 错误

B. 正确

答案是：

10.  refrigeration system 意思是制冷系统

A. 错误

B. 正确

答案是：

12.  .radial load 意思是侧向载荷

A. 错误

B. 正确

答案是：

13.  parabolic reflector 意思是抛物镜

A. 错误

B. 正确

答案是：

14.  four-wheel drive 意思是四轮驱动

A. 错误

B. 正确

答案是：

11.  service brake 意思是行车制动器

A. 错误

B. 正确

答案是：

15.  instrument voltage regulator 意思是仪表电压调节器

A. 错误

B. 正确

答案是：

1.  With front drive arrangement or rear-wheel-drive arrangement, ______ transmit the power to the drive wheels.

A. piston engine

B. gears

C. gears and shafts

D. diesel engine

答案是：

4.  The ______ system is used to reduce the air pollution caused by the engine.

A. lubricating

B. emission control

C. starting

D. ignition

答案是：

3.  The connecting rod is made of ______.

A. cast iron

B. forged alloy steel

C. aluminum-alloy

D. sheet steel

答案是：

2.  A spark ignition engine has one more basic system than Diesel engine to run, it is______,

A. fuel system

B. ignition system

C. lubricating system

D. cooling system

答案是：

7.  

An automobile includes the following major categories: the body, the engine, _____ and the electrical system.

A. steering system

B. power source

C. chassis

D. ignition system

答案是：

6.  The ______ system is applied to prevent metal parts of the engine from rubbing against each other.

A. emission control

B. cooling

C. starting

D. lubricating

答案是：

5.   During the power stroke, a force of up to 4000 pounds is suddenly applied to the piston head for ______ times a second.

A. 30

B. 40

C. 70

D. 30 to 40

答案是：

8.  After the fuel system delivers air-fuel mixture to a cylinder, a (an) ______ ignites the mixture.

A. electric spark

B. battery 

C. spark plug

D. ignition system

答案是：

9.  In a four-stroke cycle, which one is actually doing work?

A. intake stroke

B. compression stroke

C. power stroke

D. exhaust stroke

答案是：

10.  ______ is used to separate drive from the engine to gearbox and to allow a smooth, progressive take-up of drive.

A. The clutch

B. The transmission system

C. The drum brake

D. The shock absorber

答案是：

1.  internal combustion engine 意思是内燃机

A. 错误

B. 正确

答案是：

5.  full-slipper piston 意思是(高速发动机)轻型活塞

A. 错误

B. 正确

答案是：

4.  air-cooled engine 意思是风冷发动机

A. 错误

B. 正确

答案是：

3.  self-ignition 意思是自燃

A. 错误

B. 正确

答案是：

2.  radiator 意思是散热器

A. 错误

B. 正确

答案是：

6.  steering wheel 意思是方向盘

A. 错误

B. 正确

答案是：

8.  drive shaft 意思是传动轴

A. 错误

B. 正确

答案是：

7.  cooling system 意思是冷却系统

A. 错误

B. 正确

答案是：

10.  valve float 意思是气门反跳

A. 错误

B. 正确

答案是：

9.  spark plug 意思是火花塞

A. 错误

B. 正确

答案是：

11.  power steering pump 意思是动力转向泵

A. 错误

B. 正确

答案是：

12.  total capacity 意思是总排量

A. 错误

B. 正确

答案是：

13.  timing chain 意思是正式齿轮

A. 错误

B. 正确

答案是：

15.  overhead camshaft 意思是侧置凸轮轴

A. 错误

B. 正确

答案是：

14.  fuel injection pump 意思是直列式喷油泵

A. 错误

B. 正确

答案是：