一．选择题
1.The heart of automobile is( A )
A engine
B body
C chassis
D electric system
2.An engine is mainly compod of two mechanisms and（ B ）systems
A one
B five
C four
D six
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3.（ C ）holds all the main components and parts together
A engine
B body
C chassis
candelaD clutch
4.The power train carries ( A ) from the engine crankshaft to car wheels
A power
B body
C engine
D clutch
5.In 1886 ,Karl Benz(C ) the first car in the word .
A find
B compo
C built
D buy
6.Today, more and more modern car are equipped with a variety of（ B ）devices
A pow r
B electronic B switch D transmission
7.Engine is a lf-contained （A ）unit vehicle
A power
B body
C engine C device
8.The engine has（ D ）of other parts .
A eighty
B ninety
C sixty
russianD hundreds
9.The intake stroke begins with the piston at the（ C ）
A BDC
B MB
C
D TDC D CMP
10.Just before the bottom of power stroke , the exhaust valve C
A ups
B downs
C clos
D open
11.The body is designed to keep pasngers（ B ）and comfortable.
A look
B safe B like D discuss
12.The （ D ）provides power to move the automobile.
A piston
B transmission
C clutch
D engine
13.The transmission delivers the power to the （ B ）.
A engine
B differential
持久力C chassis
D generator
14.The transmission delivers the power to the （C ）
A two
B three
C four
D five
15.Most automobile engines operate on the （B ）stroke-cycle principle
A easy
B primary
C comfortable
D leisurely
16.The cooling system keeps the engine running at its most （D ）temperature
A low
B constant
C high
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D efficient
17.The spring of radiator cap determines the （C ）pressure in the cooling system.
A long
B wide
C maximum
D minimum
18.Oxygen Sensor is mounted into the （A ）manifold area.
A exhaust
B intake
C valve
D block
19.Oxygen nsor is employed in （ C ）loop systems to modify the basic pul width after the fact
A small
B big
C clod
D opened
20.（ C ）on engine parts also provides lubrication for engine start-up.
A fuel
B vapor
C oil
D water
21.In most cars, the oil pump is in the crankca （A ）the sump.
A above
B on
C bottom
D in
22.The fans are controlled either with a thermostatic switch or by the engine （D ）
A hint
B signal
C valve
D computer
23.A radiator is a type of （ C ）ex-changer.
A power
B electric
C heat
D cool
24.Most vehicles today u （）injector per cylinder
25.The （ A ）that the injector is open, the more fuel is injected.
A longer
B shorter
C bigger
D smaller
二．多选题
26.( A ), ( B ), and ( C )are esntial forms of transportation.
A Automobiles
B trucks
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C bus
D planes
27.An automobile body is a sheet metal shell with (B ), ( C ), and a trunk deck built into it.
A chair
B windows
C a hood
D desk
28.At the exhaust stroke, the exhaust valve( B ) and the intake valve ( D ).american beauty
A clo
B clos
C open
D opens
29.The cooling system of a water-cooled engine consists of the engine's water jacket, a , a water pump, a radiator and radiator cap, a ( BC )e c t.
A camshaft
B thermostat
C fan
D cylinder
30.The engine oil forms a al between the ( B ), ( C ), and cylinders
A wheels
B rings
C pistons
D crankshafts
31.Modern cars u one of two common types of oil pumps--the ( B )-type and the ( C )-type.
A vane
B gear
C rotor
D blade
32.The oil has many purpos: there are lubricate,( B ),( D ),clean e c t.
A heat
B al
C warm
D cool
33.The gasoline engine is mainly compod of (B )mechanism，and ( D ) system.
A one
B two B four D five
34.Crank-connecting rod mechanism including the (B )，connecting-rod，piston and ( D ) etc
A camshaft
B crankshaft
C piston
D flywheel
35.There are two types of cooling systems：( A )cooling and ( C )cooling
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A liquid
B oil
C air
D vapor
三．判断题
T 36.The engine is a lf-contained power unit witch converts the energy of fuel into mechanic energy for moving the vehicle .
F 37.The majority of engines in motor vehicles today are five-stroke piston engine.
T 38.To provide a more even and continuous flow of power .automobiles have engines with six,eight,twelve or fourteen cylinders.考研培训班
T 39.For identification purpo,manufactures classify automobile engines just by their cylinder arrangement.
T 40.Just before the bottom of power stroke , the exhaust valve clos。
T 41.Swept volume :the volume between TDC and BDC .
T 42.Compression ratio =（swept vol+ clearance vol）/（clearance vol）
T 43.Any automobile is compod of the ction such as engine, chassis , body , electric system.
F 44.Automobile have many kind of structure and shape ,but their basic structure is different each other .
T 45.The heart of automobile is engine.
T 46.The cooling system removes excessive heat from the engine.
T 47.The lubrication system is important in keeping the engine running smoothly.
T 48.The power from the engine moves through the transmission.
T 49.The transmission delivers the power to the differential.
F 50.The fuel system supplies gasoline or diel fuel to the
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oil pan.
T 51.The oil pump continues to circulate the oil as long as the engine is running.
F 52.The oil filter ensures that only dirty oil enters the engine.
T 53.Most filters also have a pressure-relief valve, or bypass valve.
F 54.Anti-scuff additives help to polish moving parts, not including cams, pistons, and cylinder walls.
F 55.Most modern cars u copper radiators.
T 56.A radiator is a type of heat ex-changer.
T 57.EFI us solenoid valves called injectors to meter fuel delivery.
T 58.As rpm is incread, up to a point, airflow also increas and fuel flow must increa to match it.
T 59.water temperature nsor is usually mounted in the intake manifold or air filter area
T 60.Airflow measurement is by one of two basic methods: Mass Airflow and Speed Density.
T 61.Fuel is drawn from the tank by the pump which t up pressure to around 40 psi.
F 62.The thermostat's main job is to allow the engine to heat up quickly, and then to keep the engine at a constant temperature.
F 63.The purpo of the engine's cooling system is to remove all heat from the engine,
T 64.The pump not circulates fluid whenever the engine is running.
T 65.In most cars, the oil pump is in the crankca above the sump.
