13. Which statement is wrong about AT?
A.
The governor and the modulator or throttle cable that monitors speed and throttle position in order to determine when to shift
B.
Planetary gear sets which are the mechanical systems that only provide the various forward gear ratios
C.
The hysraulic system which uses a special transmission fluid sent under pressure by an oil pump through the valve body to control the clutches and bands in order to control the planetay gear sets
D.
The torque converter which acts like a clutch to allow the vehicle to come to a stop. in gear while the engine is still running
side gear （ ）.
A.
半轴齿轮
B.
主动齿轮
C.
行星齿轮
D.
从动齿轮
A radiator is a type of ( ) ex-changer
A.
heat
B.
electric
C.
cool
D.
power
Between the brake pedal and the master cylinder is the （ ） which increases the brake force to make the car slow down or stop with less effort.
A.
brake drum
B.
brake booster
C.
wheel cylinder
D.
brake caliper
On a vehicle that has an engine-driven cooling fan with a thermostatically-controlled viscous clutch——what actually drives the clutch? （ ）
A.
The power of the vehicle
B.
The ambient air temperature
C.
The temperature of the fluid
D.
The speed of the vehicle
ignition coil （ ）.
A.
点火开关
B.
点火系统
C.
点火线圈
D.
压燃点火
( ) of the connecting rod is provided with an I-cross section to give the rod maximum rigidity with the minimum of weight.
A.
small end
B.
pin
C.
big end
D.
shank
orque converter is used in （ ）.
A.
direct shift gearbox
B.
manual transmission
C.
automatic transmission
D.
continuously variable transmission
19. allows the drive shaft to flex when the drive angle changes.
A.
Ball joint
B.
Pitman arm
C.
U-joint
D.
Steering knuckle
gearshift （ ）.
A.
齿轮箱
B.
齿轮装置
C.
变速杆
D.
挂档叉
22. What is arguably the most important automobile brake part?
A.
None of the above
B.
The brake pad
C.
The brake caliper
clutch disk （ ）.
A.
离合器分离盘
B.
离合器主动盘
C.
离合器压盘
D.
离合器从动盘
The type of power needed to make a vehicle move, or to pull a heavy load ( )
A.
engine torque
B.
axial thrust
C.
thrust
D.
traction
governor （ ）.
A.
固定片
B.
调速器
C.
衬垫
D.
调制器
The（ ）is the basic part of the engine. It forms the main framework or foundation of the engine.
A.
flywheel
B.
cylinder block
C.
cylinder head
D.
crankcase
impeller （ ）.
A.
驱动轮
B.
涡轮
C.
导轮
D.
泵轮
11. What tells the automatic transmission how fast the car is going?
A.
The governor
B.
The sump
C.
The gear pump
15. Which section is the brain of the automatic transmission that directs hydraulic fluild to the numerous valves?
A.
Valve body
B.
Torque converter
C.
Oil pump
D.
Planetary gear sets
A （ ） with a brake fluid reservoir on it has 2 independent working chambers.
A.
brake drum
B.
brake caliper
C.
master cylinder
D.
wheel cylinder
5. In a distributorless ignition system, what component has total control over spark timing?
A.
The coil control unit ( CCU )
B.
The spark control unit ( SCU )
C.
The engine control unit ( ECU )
- 第2部分
- 总题数: 10
The crankshaft is made up of various parts such as ( ) and flywheel end.
A.counter-balanced weight
B.crank arm bearing
C.main bearing journals
D.rod journal
Braking hydraulic modulators typically include three functions for each controlled wheel circuit:（ ）
A.pressure reapply
B.isolation
C.pressure buildup
D.pressure-dump
Which are the jobs of ignition system? （ ）。
A.control the timing of that spark
B.ignites the air-fuel mixture
C.create a high voltage
D.reduce the speed of the engine
The engine oil forms a seal between the ( ) and cylinders
A.crankshafts
B.rings
C.pistons
D.wheels
Disk brake is consisted of （ ）。
A.two brake pads
B.a brake caliper
C.a brake plate
D.a brake disk
The cylinder head carries the( ) and the rocker shaft.
A.cylinder
B.valves
C.crankshaft
D.valve springs
Which are the jobs of final drive? （ ）。
A.lower the speed
B.control the timing of the power
C.distribute the power
D.increase the torque
The fuel system consists of lines, ( ), carburetor, and injectors.
A.filter
B.fuel tank
C.sump
D.pump
Modern cars use one of two common types of oil pumps—( ).
A.rotor
B.vane
C.gear
D.blade
A car uses a four-stroke engine. The four strokes are( ) strokes.
A.power
B.intake
C.exhaust
D.compression
- 第3部分
- 总题数: 30
Traction is a particular form of power that makes a vehicle move.（ ）
A. B.The wheel speed sensors signals are typically generated via a pickup coil mounted adjacent to a toothed ring at each controlled wheel.（ ）
A. B.It makes sense from an economic standpoint for an electric car to use the normal 12-volt lead-acid battery that every car has.（ ）
A. B.By monitoring the frequency output of each wheel speed sensors, the ECU can decide if an individual wheel slip exceeds a desired threshold.（ ）
A. B.In an electric car, the very simplest DC controller would be a big on/off switch wired to the accelerator pedal. （ ）
A. B.The ring and pinion gears are used to transfer the engine power from the drive shaft to the front wheels.（ ）
A. B.During charging, the charger sends as much current as it can.（ ）
A. B.The engine is a self-contained power unit which converts the energy of fuel into mechanic energy for moving the vehicle. ( )
A. B.A battery pack contains many batteries, wired in series to create hundreds volts.（ ）
A. B.The distance that a spring compressed under force depends on the rate of the spring.（ ）
A. B.Water temperature sensor is usually mounted in the intake manifold or air filter area. ( )
A. B.The hydraulic control system is responsible for a variety of major activities that involve pressure and performance circuits.（ ）
A. B.The power from engine moves through the transmission. ( )
A. B.Automobile have many kind of structure and shape, but their basic structure is different each other. ( )
A. B.The transmission is designed for changing the speed and power from the clutch to the propeller shaft. （ ）
A. B.DC motors is great for short bursts of acceleration.（ ）
A. B.Because of practical slip-threshold tradeoffs, ABS equipped vehicles may show a slightly increased stopping distance.（ ）
A. B.The cruise control is disengaged whenever the brake pedal is depressed. （ ）
A. B.Nowadays, contact-point ignition system is often used on the modern cars.（ ）
A. B.The basic principle of the electrical spark ignition system has changed for over 75 years. （ ）
A. B.During cruise control operation, the servo controls the throttle position by changing the amount of vacuum in the servo.（ ）
A. B.The wheel actuators force a friction material against a rotating surface to generate a force that stop the vehicle. （ ）
A. B.This clutch switch disengages the cruise control the instant that the clutch is depressed.（ ）
A. B.In an electric car, most controllers pulse the power more than 15,000 times per second, in order to keep the pulsation outside the range of human hearing.（ ）
A. B.The speed sensor provides a signal to the cruise electronic controller indicating the vehicle speed.（ ）
A. B.Swept volume is the volume between TDC and BDC. ( )
A. B.By controlling the throttle position, the speed of the vehicle is maintained according to the cruise control settings. （ ）
A. B.Typical lead-acid batteries are heavy.（ ）
A. B.In the AC controller, for each phase you need one set of transistors to pulse the voltage and another set to reverse the polarity.（ ）
A. B.Springs absorb the shocks of the road surface so that passengers have a comfortable ride.（ ）
A. B.25. What is the purpose of all the bends and loops in brake lines?
A.
They add flair
B.
They add flexibility
C.
They help dissipate heat
What is the most common problem associated with clutches? （ ）.
A.
The friction material on the disk wears out
B.
The friction material on the disk lasts too short
C.
The friction material on the disk makes a wining noise
D.
The friction material on the disk lasts too long
（ ） is located between the engine and transmission.
A.
Clutch or torque converter
B.
Differential
C.
Drive shaft
D.
Transfer case
The inlet valve would have a duration of ( ) for openning
A.
大于180°
B.
270°
C.
180°
D.
小于180°
The ( ) that the injector is open, the more fuel is injected.
A.
bigger
B.
shorter
C.
longer
D.
smaller
The rod journals are bored hollow in order to reduce the crankshaft ( ).
A.
gas force
B.
centrifugal force
C.
gravity
D.
inertia
slave cylinder （ ）.
A.
主动缸
B.
从动缸
C.
轮缸
D.
燃烧室
what causes a car to burn an lose oil? ( )
A.
an old engine with piston rings that no longer seal the cylinder and piston properly.
B.
a failing exhaust system
C.
radiator trouble
D.
lack of gas
The major components of a （ ） are ECU, ICU, a set of ignition coils and some sensors.
A.
non-distributor ignition system
B.
conventional ignition system
C.
non-point ignition system
D.
contact-point ignition system
orque converter is used in （ ）.
A.
continuously variable transmission
B.
manual transmission
C.
direct shift gearbox
D.
automatic transmission
( ) of the connecting rod is provided with an I-cross section to give the rod maximum rigidity with the minimum of weight.
A.
small end
B.
shank
C.
big end
D.
pin
（ ） are called final drive.
A.
Ring gear and input drive gear
B.
Planet gears
C.
Half shafts
D.
Side gears
ignition coil （ ）.
A.
点火线圈
B.
点火系统
C.
压燃点火
D.
点火开关
How many ignition coils are there in a non-distributor ignition system for a 4-cylinder engine? （ ）
A.
One
B.
Two
C.
Four
D.
Three
17. When a wheel slips, what type of differntial allows more torque to be transferred to the non-slipping wheel?
A.
Closed differentials
B.
Limited slip differentials
C.
Stable differentials
3. According to your understanding, retarding the timing may also eliminate .
A.
compression
B.
ignition
C.
knocking
13. Which statement is wrong about AT?
A.
The torque converter which acts like a clutch to allow the vehicle to come to a stop. in gear while the engine is still running
B.
Planetary gear sets which are the mechanical systems that only provide the various forward gear ratios
C.
The hysraulic system which uses a special transmission fluid sent under pressure by an oil pump through the valve body to control the clutches and bands in order to control the planetay gear sets
D.
The governor and the modulator or throttle cable that monitors speed and throttle position in order to determine when to shift
One of the functions of the differential is to send the power to （ ） in a rear-wheel-drive car.
A.
2 driven wheels
B.
2 drive wheels
C.
4 wheels
D.
2 front wheels
The top of the cylinder block is covered with the ( ) which contains the combustion chamber.
A.
cylinder head
B.
cylinder
C.
valve
D.
connecting rod
（ ）multiplies engine torque to an increasing extent as vehicle speed drops and throttle opening is increased.
A.
Direct shift gearbox
B.
Automatic transmission
C.
Manual transmission
D.
Hydraulic system
- 第2部分
- 总题数: 10
Disk brake is consisted of （ ）。
A.a brake plate
B.a brake caliper
C.two brake pads
D.a brake disk
The body is the enclosure that houses the ( ).
A.cargo
B.chassis
C.passengers
D.engine
The clutch assembly contains following main parts （ ）。
A.Clutch pedal and clutch linkage
B.Flywheel, clutch disk and pressure plate
C.Impeller, stator, and turbine
D.Release bearing and release fork
Which part is mounted on the back plate in a drum brake? （ ）。
A.brake shoes
B.wheel cylinder
C.brake drum
D.adjuster
Which are the jobs of final drive? （ ）。
A.lower the speed
B.increase the torque
C.distribute the power
D.control the timing of the power
The oil has many purposes: there are lubricating, ( ), cleaning ect.
A.seal
B.cooling
C.heat
D.warm
Braking hydraulic modulators typically include three functions for each controlled wheel circuit:（ ）
A.pressure-dump
B.pressure reapply
C.isolation
D.pressure buildup
There are several basic types of springs in automotive suspensions. They are:( )
A.coil springs
B.leaf springs
C.torsion bars
A torque converter contains the following main parts （ ）。
A.turbine
B.stator
C.pressure plate
D.impeller
The fuel system consists of lines, ( ), carburetor, and injectors.
A.filter
B.fuel tank
C.pump
D.sump
- 第3部分
- 总题数: 30
The task of the ignition system is to ignite the compressed fuel-air mixture at proper time, producing the power to move the car（ ）
A. B.The hydraulic control system is responsible for a variety of major activities that involve pressure and performance circuits.（ ）
A. B.During charging, the charger sends as much current as it can.（ ）
A. B.In an electric car, most controllers pulse the power more than 15,000 times per second, in order to keep the pulsation outside the range of human hearing.（ ）
A. B.Cruise control can save gas by avoiding surges that expel fuel while driving at steady speeds.（ ）
A. B.Just before the bottom power stroke, the exhaust valve closes. ( )
A. B.An electric car has a normal 12-volt lead-acid battery to power all of the accessories.（ ）
A. B.The basic principle of the electrical spark ignition system has changed for over 75 years. （ ）
A. B.The purpose of the engine’s cooling system is to remove all heat from the engine. ( )
A. B.As rpm is increased, up to a point, airflow also increases an fuel flow must increase to match it. ( )
A. B.Generally, lighter, sportier cars have lower steering ratio than larger cars and trucks.（ ）
A. B.The power from engine moves through the transmission. ( )
A. B.Control of vehicle track is the most important reason for the use of ABS.（ ）
A. B.Swept volume is the volume between TDC and BDC. ( )
A. B.In the AC controller, for each phase you need one set of transistors to pulse the voltage and another set to reverse the polarity.（ ）
A. B.Water temperature sensor is usually mounted in the intake manifold or air filter area. ( )
A. B.ABS means anti-lock braking system.（ ）
A. B.Fuel is drawn from the tank by the pump which set up pressure to around 40psi. ( )
A. B.When the case turns, the differential pinion shaft turns with it.（ ）
A. B.The fuel may be ignited either by a spark or by compression. （ ）
A. B.The primary purpose of ABS is to preserve directional stability and allow the driver to continue steering during emergency braking. （ ）
A. B.Typical lead-acid batteries are heavy.（ ）
A. B.The cruise control is disengaged whenever the brake pedal is depressed. （ ）
A. B.On most cars, it takes four to five complete revolutions of the steering wheel to make the wheels turn from lock to lock.（ ）
A. B.The engine is a self-contained power unit which converts the energy of fuel into mechanic energy for moving the vehicle. ( )
A. B.Generally, the mixture ignited in the combustion chamber of a diesel engine.（ ）
A. B.In full-flow filtering system, the output of the oil pump flows through the oil filter before moving through engine. ( )
A. B.The cooling system removes excessive heat from the engine. ( )
A. B.The transmission is designed for changing the speed and power from the clutch to the propeller shaft. （ ）
A. B.Fuel filers are used to stop any contamination from getting into the fuel system of both gasoline and diesel engines. ( )
A. B.如有任何疑问请及时联系QQ 50895809反馈
