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1、汽英4次形考作业学生用第一次形考作业 试题总分：100 单选题 单选题： 1The shortcomings of the petrol engine in the nineteenth century include the followings except( ). Cno spark plug used 2He had burn marks that from the ( ) of the ropes on his skin. Acompression 3The phone wont work if it isnt ( ) up. Bcharge 4Their routin work i
2、s to ( ) around the Mississippi. Ccruise 5( ) are capable of traveling off-road recreational purpose. Aoff-road vehicle 6( ) are often used on roads in poor condition. Cpick-up vehicles 7( ) are used by family households in everyday situations Bpassenger sedans 8( ) are built for carrying heavy load
3、s. DTrucks 9 ( ) are used to carry small loads. Bpick-up vehicles 10_ use an electric ignition system with spark plugs. BSpark ignition engines 1 11 In what piston strokes, the piston is at TDC? Dintake stroke and power stroke 12 In a four-stroke cycle, which one is actually doing work? Cpower strok
4、e 13 The _ controls the fuel injection nozzles to inject fuel into the intake ports. Aelectronic control unit 14 The piston moves from the highest position to the lowest position inside the engine cylinder. This movement is called _. Cstroke 15 An automobile includes the following major categories:
5、the body, the engine, _ and the electrical system. Cchassis 16 Which one is the mean of the prase “hose and tubing” ? A管路 17 Generally however, automobiles can _3 groups. Dbe classified into 18 Passenger sedans _family households in everyday life. C are used by 19 Recreational vehicles _ traveling o
6、ff-road. Aare capable of 20 There are many other special purpose vehicles _ street water sprinklers, ambulances and fire engines. Bsuch as 21 Trucks, buses and special purpose vehicles _ the heavy vehicles. Dare classified into 2 22 _their length and design, buses can be classified as small, medium,
7、 large and articulated buses. Daccording to 23A car _many different parts. Bhas 24 The engine _ the power _ a car to make it run. Cprovides-for- 25 He wants to know where the trouble_. Dcomes from 26 There are _ different parts in a car. Bthousands of 27 The electrical system _ electricity _ many pa
8、rts Cprovides for 28 The automobile can be divided into_ major sections. Afour 29 The chassis consists of_. DA,B and C 30 The engine is often called the “_” of the automobile Bheart 31( ) makes the piston to move up and down in the engine cylinder AA result of pressure changes 32 During the power st
9、roke, a force of up to 4,000 pounds is suddenly applied to the piston head for( )times a second. D30 to 40 33Pistons for modern engines are made of ( ). 3 Caluminum-alloy 34The connecting rod is made of ( ) Bforged alloy steel 35There are two basic types of engine valves: ( ) Bthe exhaust valve and
10、the intake valve 36A valve opens and closes( ) times per mile. C2,000 37According to the location of the camshaft, the valve trains are divided into overhead camshaft type and ( ) Cside camshaft type 38Pistons for modern engines are made of ( ). Caluminum-alloy 39The function of the piston rings is
11、to ( ) Dall of the above 40The connecting rod is made of ( ) Bforged alloy steel 41The purpose of valve spring is to ( ) Akeep valve close when the camshaft is not lifting the valve 42What type of material used is determined exactly by ( ) Dall of the above 43There are two basic types of engine valv
12、es: ( ) Bthe exhaust valve and the intake valve 44A valve opens and closes( ) times per mile. C2,000 45According to the location of the camshaft, the valve trains are divided into 4 overhead camshaft type and ( ) Cside camshaft type 46The purpose of valve spring is to ( ) Akeep valve close when the
13、camshaft is not lifting the valve 47What type of material used is determined exactly by ( ) Dall of the above 48Within the gasoline or the diesel engine, about ( ) of the energy is used to drive the vehicle. A25% 49In a four-stroke cycle, which one is actually doing work? Cthe power stroke 50Relativ
14、ely small adaptability to changes of external loads is the distinguishing feature of ( ) Ainternal combustion engine 第二次形考作业 试题总分：100 单选题 单选题： 1The wheels are needed ( ) ,please put some oil on it. Dlubrication 2The carpets have been ( ) ,we have to buy a new one. Bworn 3 The _ system is applied to
15、prevent metal parts of the engine from rubbing against each other. Dlubricating 4 The main parts of the engine _ the connecting rods and crankshaft, valve 5 gear, fuel system, cooling system and lubricating system. Bare known as 5The ( ) system is applied to prevent metal parts of the engine from ru
16、bbing against each other. Dlubricating 6The water soon ( ) in the sunshine. Aevaporates 7Before the comprehensive test, youd better do some ( ) exercise. Dwarm-up 8The demonstrations in London and Paris happened ( ) . Dsimultaneously 9The ball ( ) twice before hitting the net. Abounce 10The mist qui
17、ckly ( ) as the sun rose. Ddissipated 11Put a ( ) here, it will help prevent oil leaking out. Bseal 12Their happiness was to be sadly ( ) Atransient 13Her help has made an ( ) difference. Aappreciable 14I have eaten too much, My stomach is ( ) Dbulging 15This herbal medicine ( ) a good cure for his
18、disease. Ceffects 6 16The cells have a series of ( ) stages before they develop fully. Aintermediate 17The teacher is explaining the ( ) of the earths surface for the students. Dconfiguration 18Traveling two days on end, he felt sick because of the ( ) of the road. Charshness 19The republic was decl
19、ared a fully ( ) status. Bindependent 20That woman ( ) her child with her body. Cshielded 21What problems will occur if the engine temperature is too high?( ) DAll of the above 22The function of the water jackets is to ( ) Bremove heat from the cylinder block on cylinder head 23The water pump can ci
20、rculate up to ( ) gallons of coolant per hour between the water jacket and radiator. C.7,500 24Compared with the fan on older vehicles, the advantage of the electric fan is that ( ) Dboth A and B 25What problems will occur if the engine temperature is too high?( ) DAll of the above 26The function of
21、 the water jackets is to ( ) Bremove heat from the cylinder block on cylinder head 27The water pump can circulate up to ( ) gallons of coolant per hour between 7 the water jacket and radiator. C7,500 28Compared with the fan on older vehicles, the advantage of the electric fan is that ( ) Dboth A and
22、 B 29A spark ignition engine has one or more of the basic system than Diesel engine to run, it is( ) Bthe ignition system 30The ( ) ignition system uses a mechanical set of contact points and condensers. A conventional 31The function of the primary windings is to ( ) Dchange the electronical energy
23、into a magnetic field 32The major function of the distributor is to ( ) Dboth A and C 33The spark ignition engine can change the ( ) contained in fuel into kinetic energy. Achemical energy 34When can the engine produce maximum power?( ) AThe throttle valve is fully open 35The theoretical ideal for c
24、omplete combustion is a mass ratio of ( ) D14.7:1 36Petrol is ( ) ,so we should keep it far from the fire. Acombustible 37Iron can ( ) heat. Ctransmit 8 38The bread will ( ) if you dont cover it. B harden 39The rings will also have different ( ) frequencies if you shake the board up and down instead
25、 of sideways. Dresonant 40Just ( ) the cake into three and leave one piece for Simon. Asplit 41The front of the church is completely ( ) . Asymmetric 42The drunk driver ( ) his car into the tree. Bsmash 43It is reported that two ships came into ( ) and 9 people were killed. Ccollision 44The pump ( )
26、 the tires automatically. Ainflates 45She wiped the ( ) off her forehead with a towel. Csweat 46His old clothes were all ( ) together in a corner. Cclump 47 Which one is the mean of the prase “multi-cylinder engine” ? D多缸发动机 48Which one is the mean of the prase “compression stroke” ? B压缩冲程 49Which o
27、ne is the mean of the prase “charging system” ? B充电系统 9 50 Which one is the mean of the prase “speedometer” ? C车速表 第三次形考作业 试题总分：100 单选题 单选题： 1A spark ignition engine has one or more of the basic system than Diesel engine to run, it is( ) Bthe ignition system 2In the following sentences, which one is
28、 correct?( ) BThe combustion in a gasoline engine must take place at a precise moment of time 3The ( ) ignition system uses a mechanical set of contact points and condensers. A conventional 4The function of the primary windings is to ( ) Dchange the electronical energy into a magnetic field 5Which c
29、omponent is not included in the conventional ignition system?( ) Belectronic control unit 6The major function of the distributor is to ( ) Dboth A and C 7The spark ignition engine can change the ( ) contained in fuel into kinetic energy. Achemical energy 8In the following sentences, which one is cor
30、rect?( ) AThe spark ignition engine is an external-combustion engine 9When can the engine produce maximum power?( ) 10 AThe throttle valve is fully open 10The theoretical ideal for complete combustion is a mass ratio of ( ) D14.7:1 11Petrol is ( ) ,so we should keep it far from the fire. Acombustibl
31、e 12Iron can ( ) heat. Ctransmit 13Their job is to ( ) straw into blocks for burning. Calign 14The bread will ( ) if you dont cover it. B harden 15The bridge was gradually brought into ( ) . Dfriction 16The rings will also have different ( ) frequencies if you shake the board up and down instead of
32、sideways. Dresonant 17Just ( ) the cake into three and leave one piece for Simon. Asplit 18The front of the church is completely ( ) . Asymmetric 19The drunk driver ( ) his car into the tree. Bsmash 20It is reported that two ships came into ( ) and 9 people were killed. Ccollision 21The manager ( )
33、his tie, ready now to relax. 11 Dis slackening 22The pump ( ) the tires automatically. Ainflates 23She wiped the ( ) off her forehead with a towel. Csweat 24Heavy rains ( ) fields and pastures. B saturate 25His old clothes were all ( ) together in a corner. Cclump 26 A spark ignition engine has one
34、more basic system than Diesel engine to run, it is_. Bthe ignition system 27 Which one is the mean of the prase “spark plug” ? B火花塞 28 Which one is the mean of the prase “multi-cylinder engine” ? D多缸发动机 29Which one is the mean of the prase “ignition system” ? A点火系统 30Which one is the mean of the pra
35、se “fuel system” ? D燃油系统 31Which one is the mean of the prase “compression stroke” ? B压缩冲程 32Which one is the mean of the prase “the air-fuel mixture” ? A混和气 12 33Which one is the mean of the prase “charging system” ? B充电系统 34Which one is the mean of the prase “fuel tank” ? A油箱 35 Which one is the m
36、ean of the prase “speedometer” ? C车速表 36The company is taking a new measure to ( ) their export trade. Cboost 37The electrical charge can be either ( ) or negative such that like charges repel and opposite charges attract. Apositive 38Who is responsible for the ( ) of military supplies? Btransfer 39
37、He was drinking a glass of wine ( ) with water Bdilutes 40The 3-way catalytic converter depends on a ( ) ratio to operate at maximum efficiency. Astoichiometric A/F 41 After the fuel system delivers air-fuel mixture to a cylinder, a (an) _ ignites the mixture. Cspark plug 42 Which one is the mean of
38、 the prase “emission control system” ? C排放控制系统 43 Which one is the mean of the prase “water-cooling system” ? 13 A水冷系统 44 Which one is the mean of the prase “manifold injection” ? D歧管喷射 45 Which one is the mean of the prase “3-way catalytic converter” ? A三元催化转化器 46 Which one is the mean of the prase
39、 “centrifugal force” ? C离心力 47 Which one is the mean of the prase “electronic control unit” ? B电子控制单元 48 Which one is the mean of the prase “side impact detection” ? C侧向碰撞监测 49 According to the different _ fuel used, the engine can be classified into a gasoline engine or a diesel engine. Dtypes of 5
40、0 The most common automobile engine is _ engine. Agasoline 第四次形考作业 试题总分：100 单选题 单选题： 1A refrigeration system consists of five basis parts, they are the compressor, the ( ), the evaporator, the receiver, and the refrigerant flow control valve. Acondenser 2The ( ) has two sets of passages: air passage
41、s and refrigerant tubes. Ccondenser 14 3The ( ) and the ( ) are in fact heat exchangers. Bcondenser;evaporator 4The ( ) is located in a refrigerant line between the condenser and evaporator. Bcompressor 5The ( ) is located in a box or under the instrument panel of the car. Bevaporator 6A thermostati
42、c expansion valve includes a ( ) , a diaphragm, and a valve that is a spring loaded ball. Atemperature sensing bulb 7The ( ) is a high pressure pump driven by the engine. Acompressor 8The tire loads include three load groups: side load, radial load and ( ) Ctractive load 9When the tire is on a dry asphalt surface, the maximum frictional force of the tire (without sliding) is usually between ( ) of the radial load. B60%70% 10The condition of ( ) means that the smooth tire rides up on the surface water. Bsliding 11Radial tires were first used on (
