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《轮机英语》试题(二三管轮)含答案

《轮机英语》试题(二三管轮)含答案
《轮机英语》试题(二三管轮)含答案

《轮机英语》考试复习题

(二、三管轮)

第一章船舶动力装置

1.“Before disconnecting the oil pipe, would you flush the oil retained in the pipe?”

asked the oil barge owner.

A. by using of fresh water

B. with compressed air √

C. by using of sea water

D. with chemical compound

2.“Stand by an engine” means _____.

A.“prepare to stop the engine”

B.“assemble an engine on its bedplate”

C.“make an engine ready for starting”√

D.“dismantle an engine”

3. A _____ is the foundation of the engine, without the support of which the shaft alignment

in particular, and engine structure as a whole, would inevitably be lost.

A. Frame

B. Bedplate √

C. Cylinder

D. Liner

4._____ are commonly used in mechanical-hydraulic governor to sense engine speeds.

A. Bulbs

B. Bulks

C. Flyweights √

D. Flywheels

5._____ are generally formed in the frame of the both in-line and Vee engines to give

maintenance access to the crankshaft main and connecting rod large end bearing.

A. Doors √

B. Aspirate gauzer

C. Coupling

D. Blind

6._____ device is provided to prevent starting air from being admitted to the cylinder

before the reversing is completed.

A. An automatic √

B. A transmission

C. A self-regulating

D. An interlocking

7._____ fuel oils _____ lubricating oils require treatment before passing to the engine.

A. Both/and √

B. Neither/nor

D. Both/or

8._____ is sometimes used for piston cooling since leaks into the crankcase would not cause

problems.

A. Diesel oil

B. Hydraulic oil

C. Lube oil √

D. Mineral oil

9._____ is the removal of exhaust gases by blowing in fresh air.

A. Gas exchange

B. Charging

C. Scavenging √

D. Supercharging

10._____ is used for cylinder and cylinder head, the salt water is used for cooling the

lubricating oil, the fresh water in the coolers and the charging air in the air cooler.

A. The fuel oil

B. The lube oil

C. The sea water

D. The fresh water √

11._____ may be the first possible cause which makes the engine to lose power or slow down

when it is running.

A. Hot bearing √

B. Starting valves

C. Unequal distribution of load

D. Excessive crankshaft clearance

12._____ of an engine crankshaft can be detected by measuring deflections of crank webs

for each unit of the engine.

A. Misalignment √

B. Length

C. Strength

D. Stresses

13._____ of the A-frames there is a strong cast iron frame called the scavenging air box.

A. At the top √

B. At the bottom

C. In the top

D. In the bottom

14._____ pistons have low inertia and high coefficient of thermal expansion.

A. Cast iron

B. Cast steel

D. Aluminum √

15._____ should not undertake any task which will interfere with the supervision duties

relating to the main machinery and associated equipment.

A. The watch keeping personnel √

B. The chief engineer

C. The person on a bunker barge

D. Any of the above

16._____ the cylinder will contain a great weight of air and will be capable of burning

a great quantity of fuel.

A. At the beginning of the compression stroke √

B. At the beginning of the suction stroke

C. At the end of the working stroke

D. At the end of the exhaust stroke

17._____ the supercharge pressure is, _____ power an engine develops.

A. The higher/the more √

B. Higher/more

C. Higher/little

D. The higher/the less

18._____ is not properly set thus causing either advanced or retarded firing.

A. A piston

B. A fuel injection pump √

C. A feed water pump

D. A lube oil pump

19._____ rods are not in proper condition so that too much fuel is supplied to the

corresponding cylinder.

A. Piston

B. Sounding

C. Regulating √

D. Connecting

20._____ shows 1.2 meter and the specific gravity of the oil is 0.96According to the measuring

scale, that makes 150 tons.

A. The piston rod

B. The push rod

C. The sounding rod √

D. The connecting rod

21._____ allows for expansion and water make up in the water cooling system.

A. A top tank

B. A head tank √

D. A drain tank

22._____ at the end of the distribution pipe ensures that adequate pressure is maintained

by the pump.

A. A relief valve

B. An alarm √

C. A pressure gauge

D. A non-maim valve

23._____ is used for washing and drinking.

A. The ballast system

B. The salt water system

C. The bilge system

D. The domestic system √

24._____ provide the water to the pistons.

A. Pneumatic pipes

B. Hydraulic pipes

C. Telescopic pipes √

D. Operating gas pipes

25._____ are fitted in the exhaust system and facilitate charge removal and scavenging in

each cylinder.

A. Diffusers √

B. Compressors

C. Steam boilers

D. Soot blowers

26._____ are formed by abrasive particles entering the bearing and scoring the shaft.

A. Grooves √

B. Recesses

C. Ridges

D. Nips

27._____ are mounted on and bolted to the bed-plate cross girders.

A. The crankshaft

B. The crankcase

C. The guide-ways

D. The frames √

28._____ is a precaution which contributes to avoiding trouble under normal operating

conditions.

A. Constant inspection √

B. Keeping constant load

C. Remaining constant temperature

D. varying speed

29._____ is a source of power by which the diesel engine may operate.

A. Water energy

B. Electrical energy

C. Chemical energy

D. Heat energy √

30._____ is arranged for cleaning the lubricating oil in the system and clean oil can be

provided from a storage tank.

A. A filter

B. A centrifuge √

C. A distiller

D. A generator

31._____ is fully floating in both connecting rod small end and the piston skirt.

A. The piston rod

B. The cross head pin

C. The gudgeon pin √

D. The crank-pin

32._____ is made of a boss with separated blades mounted into it.

A. A variable pitch propeller √

B. A variable pitch nut

C. A fixed pitch parallel

D. A fixed pitch screw

33._____ is usually driven by the engine camshaft and supplies pilot air to the cylinder

air start valve.

A. An air receiver

B. An operating valve

C. An automatic valve

D. An air distributor √

34._____ neutralizes the acid conditions and_____ cleanses the rings and grooves.

A. The detergency/the alkalinity

B. The alkalinity/the detergency √

C. The inhabitant/the water

D. The additives/the distilled water

35._____ or air venting arrangement is fitted to the fuel supply passage.

A. An air pump

B. A compressor

C. A fuel pump

D. A priming √

36._____ providing lubricating films, oil used in marine diesel engines have to remove heat

from oil cooled piston.

A. Except for

B. Beside

C. Except

D. In addition to √

37._____ the engines, the diesel engine is_____ used engine on board.

A. Between/more commonly

B. Among/the most commonly √

C. Between/not more commonly

D. Among/not the most commonly

38._____ water is more expensive than fresh waterIt has high specific heat and low viscosity.

A. Distilled √

B. Distilling

C. Boiling

D. Boiled

39._____ for the camshaft gear train is taken from a spur gear which for a six cylinder

engine is at the coupling end.

A. The driven gear

B. The drive √

C. The grease

D. The lubricating oil

40._____ in what position the engine stops there will always be at least one of the cylinders

with its starting air valve open to admit compressed air to start the engine.

A. Because

B. Owing to

C. For

D. No matter √

41._____ is secured by means of side-chock bolts and end-chock bolts.

A. The bedplate √

B. The column

C. The main bearing

D. The double bottom

42._____ usually helps to induce air movement to assist combustion.

A. Cylinder cover

B. Main bearing

C. The exhaust valve

D. The piston movement √

43._____ may have two emergency source of power, thus requiring two emergency switchboards.

A. Large passenger vessels √

B. General cargo ships

C. Container ships

D. Oil tankers

44._____ supplies pilot air to control the cylinder air start valves.

A. An air compressor

B. An indicator cock

C. An air distributor √

D. A safety valve

45._____ clearances in the main or crank pin bearings will sometimes be indicated by loss

of pressure in the lubricating system before any bearing knock is heard.

A. Too larger

B. Too smaller

C. Excess

D. Excessive √

46.A cast steel strong back is fitted in way of the combustion space to help absorb _____.

A. flame temperature

B. fuel oil

C. air movement

D. gas forces √

47.A charge of fresh air is drawn into the engine cylinder and then _____ by the moving

piston_____ very high pressure.

A. pressed/to

B. pressurized/with

C. pushed/in

D. compressed/to √

48.A common trouble with the fuel pump plunger or fuel valve spindle is _____.

A. water leakage

B. steam leakage

C. oil leakage √

D. air leakage

49.A common trouble with the fuel pump plungers or fuel valve spindle is _____.

A. broken down

B. stuck

C. oil leakage √

D. carbonized

50.A diesel engine is similar to a gasoline engine except that the former has no _____.

A. cross-head

B. cylinder

C. connecting rod

D. spark plug √

51.A diesel engines crankcase oil level is found to be too highYou should suspect that _____.

A. the engine was over filled

B. there might be a fuel leak

C. there might be a water leak

D. all of the above √

52.A distance piece, known as a _____ may be interposed between the rod and the bearing

housing.

A. bearing shell

B. bearing liner

C. compression plate √

D. lead wire

53.A distance piece, with ground faces, known as a compression plate, may be interposed

between the rod and the beating housing, its thickness being chosen to ensure the correct _____.

A. compression pressure

B. compression test

C. compression ratio √

D. compression clearance

54.A distance piece, with ground faces, may be interposed between the rod and the bearing

housing, its thickness being chosen to ensure the correct _____.

A. expansion ratio

B. pressure ratio

C. compression ratio √

D. clearance ratio

55.A governor automatically controls engine speed by regulating _____.

A. fuel supply √

B. firing order

C. engine load

D. oil level

56.A gudgeon pin in a trunk piston may be free to float and rotate, with _____ to limit

axial movement.

A. split pins

B. crankpins

C. dipsticks

D. circlips √

57.A heater in the circuit facilitates warning of the engine prior to ____ by circulating

hot water.

A. starting √

B. stopping

C. to start

D. to stop

58.A high temperature alarm or _____ which will melt is used to guard against the explosion

of compressor air pipelines.

A. a flame trap

B. a relief valve

C. a fusible plug √

D. a bursting cap

59.A hot air start pipe indicates that there is _____.

A. inefficient cooling

B. a leaking air start valve √

C. a clogged drain valve

D. a leaking air bottle

60.A level gauge for a tank is to _____.

A. give the pressure

B. give the contents √

C. give the shape of the tank

D. give the accuracy level

61.A lubricant often has to perform many duties in any situation, in addition to its

fundamental job of_____.

A. resisting oxidization

B. reducing friction √

C. promoting moving speed

D. developing inertia

62.A main bearing consists of two shells which are secured by means of studs and _____.

A. tie rods

B. through bolts

C. lead wires

D. bearing caps √

63.A number of cylinder liners are enclosed in one cast iron casing to form a _____.

A. cylinder cover

B. cylinder block √

C. cylinder frame

D. bed-plate

64.A reduction in load on a diesel engine results in _____ of speed of the crankshaft.

A. a reduction

B. an increase √

C. an outing

D. a downwards

65.A separate piston cooling system is used _____ any contamination from piston cooling

glands to the piston cooling system only.

A. to help

B. to limit √

C. to protect

D. to remove

66.A separate piston cooling system is used to limit any contamination _____ piston cooling

glands_____ the piston cooling system only.

A. between, to

B. either, or

C. from, to √

D. neither, nor

67.A single piece_____ fitted with bronze rings guides the piston in the cylinder liner.

A. piston skirt √

B. piston crown

C. guide way

D. cross-head

68.A variable pitch propeller is made _____ a boss with separate blades mounted into it.

A. of

B. up of √

C. from

D. out

69.A: Please tell me the specifications and quantityB: _____.

A. Pump diesel oil first

B. 300 tons of 180 cst fuel oil √

C. The figure is all right

D. OK, I’ll sign it

70.About half an hour before the engine is required, cooling water at _____ must be circulated.

A. more than the working temperature

B. less than the working temperature

C. the working temperature √

D. the same as the surrounding temperature

71.According to the way the energy of the exhaust gases is utilized, pressure-charging can

be divided into two main systems, namely, the constant-pressure system and _____.

A. the pulse-phase system

B. the pulse Doppler system

C. the pulse system √

D. the pulse interval

72.Acid solution in the system can be tested from time to time by putting some on to a piece

of lime.

A. strength √

B. dense

C. percentage

D. velocity

73.Additives _____ protective layers on metal surfaces guarding them against corrosion.

A. damage

B. form √

C. dissolve

D. contaminate

74.Adjust _____ by means of lead wire.

A. the clearance of the main bearing √

B. the diameter of main bearing

C. the gap of main beating

D. the tolerance of main bearing

75.Administrations should bear in mind the significance of _____ in maintaining safety of

life and property at sea and in preventing marine pollution.

A. advanced nautical equipment

B. advanced performance main engines

C. emergency equipment

D. communication and language skills √

76.A-frames and cylinder block is held together by _____ to form a rigid structure.

A. connecting rods

B. piston rods

C. tie rods √

D. jack-bolts

77.A-frames are mounted on the bed plate and support _____ and cylinder block.

A. the main bearing

B. the cylinder cover

C. the entablature √

D. the sump

78.After "F.W.E." is given, the air system is shut down, the _____ gear put in, all drains

and indicator cocks opened, and the cooling water kept running.

A. steering

B. timing

C. turning √

D. running

79.After ensuring that the _____ is correct the bearing clearance should be checked.

A. nap

B. gap

C. nip √

D. deflection

80.After fitting back in place the gear wheels, dont forget _____ them.

A. to grease √

B. greasing

C. oiling

D. lubricating

81.After passing through the turbine the exhaust gas is conducted out into the _____.

A. intercooler

B. compressor

C. cylinder

D. open air √

82.After the engine is warned, we should_____ the turning gear before starting up the engine.

A. take in

B. put in

C. take out √

D. put up

83.After the order “_____” is given, the air system is shut down, the turning gear put

in.

A. Finished with Engine √

B. Stop the Engine

C. Stand-by Engine

D. Slow-down Engine

84.Air cocks, usually positioned at the _____ in a circulating system, is used to get rid

of the air in the system.

A. bending joint

B. expansion tank

C. weld

D. the highest point √

85.All the rings are slightly rounded on their external top and bottom edges to keep the

oil film on the cylinder liner during _____ for new piston rings.

A. the running-in period √

B. the running process

C. gas exchange process

D. the boiler firing

86.All three systems have the ports _____ to swirl the incoming air and direct it in the

appropriate path.

A. angled

B. rounded

C. being angled

D. being rounded √

87.Although the crankshafts of medium diesel engines appear to be robust, they rely on the

support of _____ to develop their full strength.

A. the piston rods

B. the crank throws

C. the thrust bearings

D. the main bearings √

88.Aluminum pistons have _____ coefficient of thermal expansion compared with those of cast

iron.

A. higher √

B. lower

C. the same

D. none of the above

89.Among the rings of a piston the _____ one is subjected to the greatest load and temperature.

A. bottom

B. middle

C. top √

D. none of the above

90.An aluminum piston has lower inertia and higher coefficient of _____ compared to that

of cast iron.

A. viscosity

B. twisting moments

C. inertia

D. thermal expansion √

91.An electrically driven automatically operating auxiliary blower is provided for slow

speed and _____ of a low speed diesel engine.

A. manoeuvring operations √

B. bad combustion

C. cooling

D. mooring trial

92.An increase in load on a diesel engine results in _____ of speed of the crankshaft.

A. a reduction √

B. an increase

C. an outing

D. a downwards

93.An interlock in the remote operating valve line stops the valve _____ when the engine

turning gear is engaged.

A. to open

B. opening √

C. open

D. opened

94.An overspeed safety device is usually fitted to a generator engine for _____ in the event

of overspeed.

A. cutting power off the engine √

B. increasing the fuel pump setting

C. braking the crankshaft

D. stabilizing the ship speed

95.As a heat engine, _____ energy is the source of power by which the diesel engine can

be operated.

A. electric

B. heat √

C. mechanical

D. exhaust

96.As for a diesel engine, lack of combustion air may be due to _____.

A. fouling turbine √

B. fuel pump faults

C. lubrication failure

D. excessive cooling

97.As the plunger moves up, the ports are closed and the fuel _____ and delivered to the

injector nozzle at very high pressure.

A. being compressed

B. to be pumped up

C. is pressurized √

D. are built up

98.At least _____ cylinders in four-stroke engine will be configured to ensure that the

engine can be started with the crankshaft at whatever position.

A. 6 √

B. 2

C. 12

D. 8

99.At the top of the A-frames there is a strong cast iron frame called _____.

A. cylinder liner

B. cylinder cover

C. the gear box

D. the scavenging box √

100.Be sure to make the engine turn by _____ before starting and after stopping.

A. steering gear

B. turning gear √

C. steering wheel

D. turning cycle

101.Bearing knocks are likely to occur from _____.

A. less clearance

B. dirty lube oil

C. overload

D. bearing wear √

102.Because the castings of smaller engines are not so big and heavy, _____ and cylinder block may be made in one piece.

A. the column √

B. the jacket

C. cylinder cover

D. cylinder liner

103.Bedplates are the _____ of the engine, without the support of which the shaft alignment in particular, and engine structure as a whole, would inevitably be lost.

A. hull

B. projection

C. graphitization

D. foundation √

104.Before "stand-by" is rung on the engine telegraph, it is usual to give the main engine _____ ahead and astern.

A. a brief trial with turning gear

B. a brief trial on power √

C. a long trial by steering gear

D. one minutes trial with windlass

105.Before a marine diesel engine is started the cylinders and pistons must be _____.

A. cooled to appropriate temperature

B. warmed up gradually to appropriate temperature √

C. opened up and renewed

D. ground and polished

106.Before being used the fuel service tank should be drained of _____.

A. soda solution

B. mechanical impurities

C. ballast

D. water and residuals √

107.Before pumping up the crankcase oil, _____ should be worked by hand to minimize corrosive action on the liners.

A. the indicators

B. the starting valves

C. the cylinder lubricators √

D. the turning gear

108.Before replacing a piston you should check that all rings are _____.

A. free √

B. fastened

C. broken

D. stuck

109.Before replacing a piston you should check the rings to see that all clearances and gaps are _____ the permissible tolerances.

A. above

B. at

C. over

D. within √

110.Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible _____.

A. deflection

B. discrepancy

C. error

D. tolerance √

111.Before starting the engine the air bottle should be _____.

A. pumped up √

B. loaded

C. discharged

D. opened

112.Before starting the turning gear, _____ should be worked by hand to minimize corrosive action on the liners.

A. the indicators

B. the starting valves

C. the cylinder lubricators √

D. the turning gear

113.Blow-off of the relief valves of the engines cylinders may be caused by _____.

A. too low lead

B. water in fuel

C. too tight spring

D. leakage √

114.Blow-off of the relief valves of the main cylinders during operation indicates _____.

A. the cylinder cover is cracked

B. the injector holes is clogged

C. the cams are not properly set √

D. fuel pump is leaking

115.Bridge gauge can be used to measure _____ of a diesel engine.

A. diameters of journals √

B. deflections of crankwebs

C. diameters of crankpins

D. none of the above

116.Care and cleanliness are required when installing diesel fuel filters _____.

A. to prevent the fuel system from becoming air-hound

B. to prevent the fuel system becoming clogged with dirty particles

C. both of the above √

D. to prevent the lubricating oil from leaking out of the filter element

117.Cast iron carrier rings, _____ machined grooves, are provided for all the pistons.

A. caulked into √

B. caulking into

C. pressed into

D. screwed into

118.Charging is the filling of the engine cylinder with a supply of _____ for compression.

A. water

B. fresh air √

C. fuel oil

D. gas

119.Charging is the filling of the engine cylinder with a supply or charge of fresh air _____ compression.

A. to need

B. ready for √

C. want to

D. going to be

120.Charging-air pressure increases if there is incorrect combustion and drop in the _____ of the diesel engine.

A. machine efficiency

B. machinery efficiency

C. mechanical efficiency √

D. mechanics efficiency

https://www.sodocs.net/doc/587732040.html,pressed air is supplied by air compression to _____.

A. the air receivers √

B. the starting valves

C. the cylinder covers

D. the distributors

https://www.sodocs.net/doc/587732040.html,pressed air is used on board ship _____.

A. for starting diesel engines

B. in pneumatic control system

C. in pneumatic tools

D. All the above are true √

123.Constant cooling the various components of diesel engine has a number of functions except for _____.

A. good lubrication

B. low thermal stress

C. good mechanical properties

D. acid corrosion √

124.Cooling enables the engine metals _____ their mechanical properties.

A. to retain √

B. to remain

C. to maintenance

D. to have

125.Cooling of engine is achieved by circulation a cooling liquid around internal passages within the _____.

A. boiler

B. heater

C. engine √

D. cooler

126.Cooling of engines is achieved by _____ a cooling liquid around internal passages within the engine.

A. flowed

B. flowing

C. mixing

D. circulating √

127.Cooling of engines is achieved by circulating a cooling liquid around internal _____ within the engine.

A. air

B. passages √

C. pipes

D. means

128.Cracks in cylinder and cylinder covers may _____ from unequal heating.

A. make

B. cause

C. result √

D. produce

129.Cracks in the cylinders and cylinder covers may _____ unequal heating.

A. result from √

B. result in

C. give out

D. given from

130.Cracks in the cylinders and cylinder covers may result from _____.

A. low speed

B. unequal heating √

C. less lubricating

D. low charge air pressure

131.Crankshafts of medium speed engines are _____ from a single piece of steel.

A. unusually solid welded

B. never be solid forged

C. almost invariably solid forged √

D. almost invariably be welded

132.Cross scavenging requires the fitting of _____ to prevent air or exhaust gas escape when the piston is at the top of the stroke.

A. a exhaust valve

B. a piston skirt √

C. a piston crown

D. an air suction valve

133.Cylinder liner cooling is often referred to as _____.

A. piston cooling

B. sleeve cooling

C. central cooling

D. jacket cooling √

134.Cylinders of marine diesel engines are normally cooled by _____.

A. sea water

B. fine mineral oil

C. sanitary water

D. fresh water √

轮机大管轮英语真题48期

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The desirable properties or a marine fuel oil should inc lude . A. high flash point and high viscosity B. low flash point and high viscosity C. low heating value and high sulphur content D. high heating value and low sulphur content 5. As the plunger moves upwards in the barrel, injection will commence once the plunger bas the spill ports and the pressure builds up. A. opened up B. closed off C. lined up D. taken off 6. In an auxiliary diesel engine bypass type lubricating oil system, the main lube oil pump forces . A. all of the oil used by the engine through a filter B. some of the oil used by the engine through a filter C. some of the oil used by the engine through a centrifuge D. all of the oil used by the engine through a centrifuge 7. Because the circulating water is in a closed loop, is installed to cater for expansion and contraction of the water at different conditions of operation. A. an expansion joint B. a drain tank C. a head tank D. a contraction tank 8. 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