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自考10012轮机英语(二)模拟试题5

试题数量：50道
免费次数：登录后，试做1次
练习次数：191次
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试卷简介

该试卷共包含50道试题，试题类型如下:

单选题

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1、[单选题]For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through the _____.
- A.cylinder casing
- B.cylinder bore
- C.crankcase door
- D.aperture in the cylinder block
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2、[单选题]For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through _____.
- A.the cylinder cover
- B.the bottom of bed-plate
- C.the sump
- D.the crankcase door
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3、[单选题]Four strokes consist of suction,compression,_____ and exhaust stroke.
- A.combustion
- B.condensation
- C.charging
- D.evaporation
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4、[单选题]Fresh water is used for the cooling of cylinder jackets and _____ of the marine diesel engine.
- A.cylinder covers
- B.lubricating space
- C.erosshead
- D.exhaust manifold
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5、[单选题]Fresh water is used for the cooling of the cylinder jackets and _____ of the main engine.
- A.covers
- B.crankshaft
- C.cross-head shoe
- D.the sea water in the fresh water system
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6、[单选题]Fuel has been injected but ignition fails.The possible cause may be _____.
- A.leaky exhaust valve
- B.increased scavenging air temperature
- C.engine cylinders not scavenged sufficiently
- D.water in the fuel oil
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7、[单选题]Fuel injected into a diesel engine's cylinder is ignited by _____.
- A.the heat compressed fuel/air mixture in the cylinder
- B.the fuel igniter
- C.the fuel injector
- D.the fuel pump
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8、[单选题]Fuel injection uses the jet pump system and a Woodward type hydraulic _____ is used to control engine spee
- A.controller
- B.governor
- C.instrument
- D.apparatus
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9、[单选题]Fuel injection valves should be taken out,cleaned,and lifting checked every _____.
- A.two to four months
- B.four to six months
- C.six to eight months
- D.year
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10、[单选题]Fuel is delivered into the combustion space by _____.
- A.a cooling system
- B.a lubricating system
- C.an electric system
- D.an injection system
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11、[单选题]Fuel is not supplied to the corresponding cylinder due to a failure of _____.
- A.the motor
- B.the fresh water generator
- C.the governor
- D.the fuel pump
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12、[单选题]Fuel is not supplied to the corresponding cylinders due to _____.
- A.a failure of the motor
- B.a failure of lubricator
- C.a failure of cylinder
- D.a failure of fuel pump
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13、[单选题]Fuel oil is pumped by means of _____ from the bunker tanks.
- A.a transfer pump
- B.a bilge pump
- C.a service pump
- D.a vacuum pump
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14、[单选题]Fuel oil is thought to be one of the main factors _____ the operation and maintenance of an engine.
- A.have nothing to do with
- B.having nothing to do with
- C.have much to do with
- D.having much to do with
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15、[单选题]Fuel pump index is _____.
- A.the viscosity index
- B.the fuel oil contents
- C.the starting speed
- D.the reading at the rack
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16、[单选题]Fuels of high quality with their earlier ignitions will cause higher _____ pressure in cylinders of a diesel engine.
- A.compression
- B.maximum
- C.rated
- D.oil
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