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】：D
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】：C
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】：D
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
electronic ignition system 意思是电子点火系统
A. 错误
B. 正确
【答案】：微信：zuoye580
electronic injection system 意思是机械燃油喷射系统
A. 错误
B. 正确
【答案】：微信：zuoye580
timing advanced 意思是正时延迟
A. 错误
B. 正确
【答案】：微信：zuoye580
oil sensor 意思是机油冷却器
A. 错误
B. 正确
【答案】：微信：zuoye580
clutch pedal 意思是离合器踏板
A. 错误
B. 正确
【答案】：微信：zuoye580
nonchargeable 意思是不可在充电的
A. 错误
B. 正确
【答案】：微信：zuoye580
cold starting 意思是热启动
A. 错误
B. 正确
【答案】：微信：zuoye580
exhaust gas turbochargers 意思是废气涡轮增压器
A. 错误
B. 正确
【答案】：微信：zuoye580
muffler 意思是消声器
A. 错误
B. 正确
【答案】：微信：zuoye580
air-cooling system 意思是空气冷却系统
A. 错误
B. 正确
【答案】：微信：zuoye580
oil bath air filter 意思是干式空气滤清器
A. 错误
B. 正确
【答案】：微信：zuoye580
inertia engaged motor 意思是预啮合电机
A. 错误
B. 正确
【答案】：微信：zuoye580
secondary winding 意思是初级线圈
A. 错误
B. 正确
【答案】：微信：zuoye580
dashboard 意思是仪表板
A. 错误
B. 正确
【答案】：微信：zuoye580
pressure regulator 意思是调压器
A. 错误
B. 正确
【答案】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
The connecting rod is made of ______.
A. cast iron
B. forged alloy steel
C. aluminum-alloy
D. sheet steel
【答案】：微信：zuoye580
The ______ system is used to reduce the air pollution caused by the engine.
A. lubricating
B. emission control
C. starting
D. ignition
【答案】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
______ 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】：微信：zuoye580
internal combustion engine 意思是内燃机
A. 错误
B. 正确
【答案】：微信：zuoye580
radiator 意思是散热器
A. 错误
B. 正确
【答案】：微信：zuoye580
self-ignition 意思是自燃
A. 错误
B. 正确
【答案】：微信：zuoye580
air-cooled engine 意思是风冷发动机
A. 错误
B. 正确
【答案】：微信：zuoye580
full-slipper piston 意思是(高速发动机)轻型活塞
A. 错误
B. 正确
【答案】：微信：zuoye580
steering wheel 意思是方向盘
A. 错误
B. 正确
【答案】：微信：zuoye580
cooling system 意思是冷却系统
A. 错误
B. 正确
【答案】：微信：zuoye580
drive shaft 意思是传动轴
A. 错误
B. 正确
【答案】：微信：zuoye580
spark plug 意思是火花塞
A. 错误
B. 正确
【答案】：微信：zuoye580
valve float 意思是气门反跳
A. 错误
B. 正确
【答案】：微信：zuoye580
power steering pump 意思是动力转向泵
A. 错误
B. 正确
【答案】：微信：zuoye580
total capacity 意思是总排量
A. 错误
B. 正确
【答案】：微信：zuoye580
timing chain 意思是正式齿轮
A. 错误
B. 正确
【答案】：微信：zuoye580
fuel injection pump 意思是直列式喷油泵
A. 错误
B. 正确
【答案】：微信：zuoye580
overhead camshaft 意思是侧置凸轮轴
A. 错误
B. 正确
【答案】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
automatic transmission 意思是自动变速器
A. 错误
B. 正确
【答案】：微信：zuoye580
forward gear 意思是倒挡
A. 错误
B. 正确
【答案】：微信：zuoye580
front-engine front-drive 意思是发动机前置前轮驱动
A. 错误
B. 正确
【答案】：微信：zuoye580
emergency flasher switch 意思是雨刷开关
A. 错误
B. 正确
【答案】：微信：zuoye580
handling characteristics 意思是操纵性能
A. 错误
B. 正确
【答案】：微信：zuoye580
steering linkage 意思是齿轮机构
A. 错误
B. 正确
【答案】：微信：zuoye580
short-long arms 意思是不等长双横臂
A. 错误
B. 正确
【答案】：微信：zuoye580
helical wheel 意思是螺旋齿轮
A. 错误
B. 正确
【答案】：微信：zuoye580
propeller shaft 意思是传动轴
A. 错误
B. 正确
【答案】：微信：zuoye580
longitudinally 意思是横置地
A. 错误
B. 正确
【答案】：微信：zuoye580
driving member 意思是从动件
A. 错误
B. 正确
【答案】：微信：zuoye580
performance vehicle 意思是特种车
A. 错误
B. 正确
【答案】：微信：zuoye580
constant velocity joint 意思是球叉式万向节
A. 错误
B. 正确
【答案】：微信：zuoye580
coast in neutral 意思是空挡惯性滑行
A. 错误
B. 正确
【答案】：微信：zuoye580
pneumatic spring 意思是扭力弹簧
A. 错误
B. 正确
【答案】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
The ( ) has two sets of passages: air passages and refrigerant tubes.
A. receiver
B. evaporator
C. condenser
D. compressor
【答案】：微信：zuoye580
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】：微信：zuoye580
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】：微信：zuoye580
The ( ) tire has the greatest steering sensitivity.
A. bias
B. radial
C. radial ply
D. asymmetric
【答案】：微信：zuoye580
understeer 意思是过度转向
A. 错误
B. 正确
【答案】：微信：zuoye580
maintenance-free battery 意思是免维护电池
A. 错误
B. 正确
【答案】：微信：zuoye580
high beam 意思是近光灯
A. 错误
B. 正确
【答案】：微信：zuoye580
negative plate 正极板
A. 错误
B. 正确
【答案】：微信：zuoye580
side impact detection 意思是侧向加速度
A. 错误
B. 正确
【答案】：微信：zuoye580
receiver 意思是储液器
A. 错误
B. 正确
【答案】：微信：zuoye580
acceleration sensor 意思是加速度传感器
A. 错误
B. 正确
【答案】：微信：zuoye580
tread pattern 意思是胎面花纹
A. 错误
B. 正确
【答案】：微信：zuoye580
halogen sealed beam 意思是标准密封光束
A. 错误
B. 正确
【答案】：微信：zuoye580
refrigeration system 意思是制冷系统
A. 错误
B. 正确
【答案】：微信：zuoye580
service brake 意思是行车制动器
A. 错误
B. 正确
【答案】：微信：zuoye580
.radial load 意思是侧向载荷
A. 错误
B. 正确
【答案】：微信：zuoye580
parabolic reflector 意思是抛物镜
A. 错误
B. 正确
【答案】：微信：zuoye580
four-wheel drive 意思是四轮驱动
A. 错误
B. 正确
【答案】：微信：zuoye580
instrument voltage regulator 意思是仪表电压调节器
A. 错误
B. 正确
【答案】：微信：zuoye580
