智慧树知到答案汽车专业英语最新答案

第三章 单元测试

1、单选题：
The ( ) in the cylinder is connected to the top of a connecting rod.
选项：
A:valve

B:crankshaft

C:piston

D:cylinder

答案: 【
】

2、单选题：
A crankshaft’s job in an engine is to ( )
选项：
A:change linear motion into rotational motion

B:keep cylinder heads in place

C:convert fuel energy into mechanical energy

D:deliver fuel to the cylinders

答案: 【
】

3、多选题：
The crank connecting rod mechanism consists of three parts—( ).
选项：
A:piston and connecting rod group

B:crankshaft and flywheel group

C:engine block group

D:camshaft and valve group

答案: 【

4、判断题：
Crank-connecting rod mechanism is the main working mechanism of reciprocating internal combustion engine.（ ）
选项：
A:对
B:错
答案: 【】

5、判断题：
The top of the cylinder block is covered with the cylinder head. （ ）
选项：
A:错
B:对
答案: 【】

6、多选题：
The crank connecting rod mechanism consists of three parts—( ).
选项：
A:crankshaft and flywheel group

B:camshaft and valve group

C:engine block group

D:piston and connecting rod group

答案: 【
】

7、多选题：
The crank connecting rod mechanism consists of three parts—( ).
选项：
A:engine block group

B:crankshaft and flywheel group

C:camshaft and valve group

D:piston and connecting rod group

答案: 【
】

第四章 单元测试

1、单选题：
An average air/fuel ratio for good combustion is about ( ) by weight.
选项：
A:13:1

B:18:1

C:15:1

D:20:1

答案: 【
】

2、多选题：
A valve consists of a( )and ( )stem. （ ）
选项：
A:tappet

B:rocker

C:stem

D:head

答案: 【
】

3、单选题：
The ( )provides the force necessary to close the valve and hold it tightly against its seat.
选项：
A:valve spring

B:tappet

C:valve

D:rod

答案: 【
】

4、判断题：
The inlet valve is opened before TDC and closed after BDC.（ ）
选项：
A:对
B:错
答案: 【】

5、判断题：
Camshaft’s function is to deliver spark positively and timely in a definite sequence. （ ）
选项：
A:错
B:对
答案: 【】

第五章 单元测试

1、单选题：
The ( ) that the injector is open, the more fuel is injected.
选项：
A:smaller

B:shorter

C:bigger

D:longer

答案: 【
】

2、单选题：
Most vehicles today use ( ) injector per cylinder.
选项：
A:4

B:1

C:2

D:3

答案: 【1
】

3、单选题：
The （ ）on the fuel tank is used to keep the fuel from splashing out, release the vacuum created by the fuel removing, and prevent vapors from escaping directly into the atmosphere.
选项：
A:baffle

B:sump

C:fuel cap

D:filter

答案: 【
】

4、判断题：
For a diesel fuel goes to the carburetor, then to the fuel nozzles.（ ）
选项：
A:错
B:对
答案: 【】

5、判断题：
The fuel system supplies gasoline or diesel fuel to the oil pan. （ ）
选项：
A:对
B:错
答案: 【】

第六章 单元测试

1、单选题：
What is the cooling agent in the liquid cooling system? ( )
选项：
A:air

B:coolant

C:lubrication

D:gasoline

答案: 【
】

2、单选题：
The water pump uses ( ) to send fluid to the outside while it spins, causing fluid to be drawn from the center continuously.
选项：
A:gas force

B:centrifugal force

C:gravity

D:friction

答案: 【
】

3、多选题：
The cooling system of a water-cooled engine consists of the engine’s water jacket, a（ ）and radiator cap, a cooling fan (electric or belt-driven), hoses, and usually an expansion (overflow) tank.
选项：
A:water pump

B:radiator

C:thermostat

D:fuel cap

答案: 【
】

4、判断题：
The cooling system is designed to work all the time when the engine is running.（ ）
选项：
A:错
B:对
答案: 【

5、判断题：
Some engines are coated the inside of the top of the cylinder head with a thin layer of ceramic to reduce the amount of heat that is transferred from the combustion chamber to the metal parts of the engine. （ ）
选项：
A:错
B:对
答案: 【】

第七章 单元测试

1、单选题：
1.For an engine to make the best use of the fuel, the spark should occur before the piston reaches the top of（ ）。
选项：
A:the compress stroke

B:the exhaust stroke

C:the intake stroke

D:the compression stroke

答案: 【
】

2、单选题：
The piston speed increases as the engine speed increases. This means that the faster the engine goes, the spark has to occur（ ）。
选项：
A:uncertain

B:later

C:no change is necessary

D:earlier

答案: 【
】

3、单选题：
According to your understanding, retarding the timing may also eliminate（ ）。
选项：
A:ignition

B:knocking

C:compression

D:combustion

答案: 【
】

4、单选题：
The primary role of the distributor is to distribute high voltage from the（ ）to the correct cylinder.
选项：
A:coil

B:spark plug

C:rotor

D:piston

答案: 【
】

5、多选题：
Functions of ignition system are （ ）
选项：
A:create a spark

B:ignite the mixture piston

C:send spark to correct cylinder

D:control the timing of spark

答案: 【
】

6、多选题：
Functions of ignition system are （ ）
选项：
A:create a spark

B:control the timing of spark

C:ignite the mixture piston

D:send spark to correct cylinder

答案: 【

7、多选题：
Functions of ignition system are （ ）
选项：
A:ignite the mixture piston

B:send spark to correct cylinder

C:create a spark

D:control the timing of spark

答案: 【
】

第八章 单元测试

1、单选题：
What is the most common problem associated with clutches? （ ）。
选项：
A:The friction material on the disk makes a whining noise

B:The friction material on the disk lasts too long

C:The friction material on the disk wears out

D:The friction material on the disk makes a cruise

答案: 【
】

2、单选题：
How many clutches are in an automatic transmission? （ ）。
选项：
A:One

B:Thousands

C:Hundreds

D:Several

答案: 【
】

3、单选题：
What is the other name for a throw-out bearing? （ ）。
选项：
A:Turn around bearing

B:Planetary bearing

C:Flywheel bearing

D:Clutch release bearing

答案: 【
】

4、单选题：
In a car’s clutch, a flywheel connects to the engine, and a clutch plate connects to the （ ）.
选项：
A:wheels

B:shaft

C:axle

D:transmission

答案: 【
】

5、多选题：
Which of the following are common reasons that a car’s clutch may stick?（ ）
选项：
A:A failure friction

B:Air in the hydraulic line

C:A loose shift knob

D:A broken or stretched clutch cable

答案: 【
】

6、多选题：
Which of the following are common reasons that a car’s clutch may stick?（ ）
选项：
A:A loose shift knob

B:A failure friction

C:A broken or stretched clutch cable

D:Air in the hydraulic line

答案: 【
】

7、多选题：
Which of the following are common reasons that a car’s clutch may stick?（ ）
选项：
A:Air in the hydraulic line

B:A failure friction

C:A loose shift knob

D:A broken or stretched clutch cable

答案: 【
】

第九章 单元测试

1、单选题：
What tells the automatic transmission how fast the car is going? （ ）。
选项：
A:The governor

B:The sump

C:The turbine

D:The gear pump

答案: 【

2、单选题：
In an automatic transmission, the shift lever hooks up to the（ ）。
选项：
A:manual valve

B:inlet valve

C:vacuum modulator

D:throttle valve

答案: 【
】

3、单选题：
Which statement is wrong about AT? （ ）。
选项：
A:Planetary gear sets which are the mechanical systems that only provide the various forward gear ratios

B: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

C:The hydraulic 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 planetary gear sets

D:The governor and the modulator or throttle cable that monitors speed and throttle position in order to determine when to shift

答案:
】

4、单选题：
Which part sends transmission fluid under pressure to all parts of the transmission and torque converter?（ ）
选项：
A:One-way clutch

B:Oil pump

C:Hydraulic system

D:Planetary gear sets

答案: 【
】

5、单选题：
Which section is the brain of the automatic transmission that directs hydraulic fluid to the numerous valves?（ ）
选项：
A:Valve body

B:Torque converter

C:Oil pump

D:Planetary gear sets

答案: 【
】

第十章 单元测试

1、单选题：
When might an open differential be a problem? （ ）。
选项：
A:Making a turn

B:Driving on ice

C:Driving on hot asphalt

D:Go in straight

答案:
】

2、单选题：
When a wheel slips, what type of differential allows more torque to be transferred to the non-slipping wheel? （ ）。
选项：
A:Closed differentials

B:Stable differentials

C:Limited slip differentials

D:Variable differentials

答案: 【
】

3、单选题：
The drive shaft connects（ ） to （ ）.
选项：
A:the clutch; the transmission output

B:the cylinder; the clutch

C:the transmission output; the differential pinion shaft

D:the transmission input; the differential pinion shaft

答案: 【
】

4、单选题：
（ ）allows the drive shaft to flex when the drive angle changes.
选项：
A:Ball joint

B:Steering knuckle

C:U-joint

D:Pitman arm

答案: 【
】

5、单选题：
A two-piece tubular drive shaft with a rubber element pressed between the two tubes, which reduces（ ）, is used on some vehicle.
选项：
A:steering angle

B:inertia

C:torsional vibration

D:torque

答案: 【
】

第十一章 单元测试

1、单选题：
What is the purpose of all the bends and loops in brake lines?（ ）。
选项：
A:They add flair

B:They add flexibility

C:They help dissipate heat

D:They help brake

答案: 【
】

2、单选题：
What do brake calipers do? （ ）。
选项：
A:All of the above

B:They move slightly

C:They squeeze the brake pads against the brake rotor

D:They control the flow of brake fluid

答案: 【
】

3、单选题：
What is other name for a brake rotor?（ ）。
选项：
A:Brake piston

B:Brake caliper

C:Brake cylinder

D:Brake disc

答案: 【
】

4、单选题：
What is arguably the most important automobile brake part?（ ）
选项：
A:The brake caliper

B:The brake pad

C:The brake shoes

D:None of the above

答案: 【
】

5、多选题：
There are some general types of disc brake（ ）
选项：
A:fixed caliper

B:coil caliper

C:rotor caliper

D:floating caliper

答案: 【
】

6、多选题：
There are some general types of disc brake（ ）
选项：
A:floating caliper

B:coil caliper

C:rotor caliper

D:fixed caliper

答案: 【

第十二章 单元测试

1、判断题：
The lower steering ratio gives the steering a quicker response.（ ）
选项：
A:错
B:对
答案: 【】

2、判断题：
The pump moves much more fluid than necessary when the engine is running at faster speed.（ ）
选项：
A:错
B:对
答案: 【】

3、判断题：
A driver can use the steering system to control the position of a car’s front wheels.（ ）
选项：
A:错
B:对
答案: 【】

4、判断题：
The rack-and-pinion gear set converts the rotational motion of the steering wheel into the linear motion.（ ）
选项：
A:错
B:对
答案: 【】

5、判断题：
The rack-and-pinion gear set provides a gear reduction.（ ）
选项：
A:错
B:对
答案: 【】

第十三章 单元测试

1、判断题：
The thicker the coils in a coil spring, the stiffer it is and the higher its rate.（ ）
选项：
A:对
B:错
答案: 【】

2、判断题：
Torsion bars’ spring rate depends on the diameter and length of the bar. （ ）
选项：
A:对
B:错
答案: 【】

3、判断题：
The stabilizer bar helps balance the load between the wheels.（ ）
选项：
A:对
B:错
答案: 【】

4、判断题：
In most of cars, the mounting of the shock absorbers lessens axle twist.（ ）
选项：
A:对
B:错
答案: 【】

5、判断题：
Suspension systems must support both road holding/handling and ride quality, which are at odds with each other. （ ）
选项：
A:错
B:对
答案: 【】

第十四章 单元测试

1、判断题：
Disk brakes require higher application pressure than do drums because they are not self-actuating.（ ）
选项：
A:对
B:错
答案: 【】

2、判断题：
Optimum braking is achieved when the slip is 10 percent to 15 percent. （ ）
选项：
A:对
B:错
答案: 【】

3、判断题：
Over-applying foundation brakes can cause wheels to lock (100% slip).（ ）
选项：
A:错
B:对
答案: 【】

4、判断题：
If the front wheels lock, the vehicle will tend to spin out (rear end moving forward).（ ）
选项：
A:对
B:错
答案: 【】

5、判断题：
If the front wheels lock, the vehicle cannot be steered. （ ）
选项：
A:对
B:错
答案: 【】

第十五章 单元测试

1、判断题：
The cruise control is disengaged whenever the brake pedal is depressed.（ ）
选项：
A:错
B:对
答案: 【】

2、判断题：
Most cruise control systems have the ability to let the driver increase or decrease the speed. （ ）
选项：
A:错
B:对
答案: 【】

3、判断题：
By controlling the throttle position, the speed of the vehicle is maintained according to the cruise control settings. （ ）
选项：
A:对
B:错
答案: 【】

4、判断题：
Vacuum in the servo is not available from a line connected to the air intake during cruise control operation.（ ）
选项：
A:对
B:错
答案: 【】

5、判断题：
When the brake pedal is depressed, the brake released switch disengages the cruise control system.（ ）
选项：
A:对
B:错
答案: 【】

第十六章 单元测试

1、判断题：
The controller of an electric car takes power from the batteries and delivers it to the motor.（ ）
选项：
A:错
B:对
答案: 【】

2、判断题：
Electric cars can use AC or DC motors.（ ）
选项：
A:错
B:对
答案: 【】

3、判断题：
In an electric car, DC installations tend to be simpler and less expensive.（ ）
选项：
A:对
B:错
答案: 【】

4、判断题：
AC motors and controllers often have a regenerator feature.（ ）
选项：
A:对
B:错
答案: 【

5、判断题：
The accessory battery of an electric car is a 300-volt battery.（ ）
选项：
A:错
B:对
答案: 【】