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海船船员考试轮机部三管轮模拟题10(轮机英语)

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  • 卷面总分:100分
  • 试卷类型:模拟试题
  • 测试费用:免费
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  • 练习次数:105次
  • 作答时间:120分钟
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试卷简介

海船船员考试轮机部三管轮模拟题10(轮机英语),本试卷是为考船舶三管轮专业考试的考生准备的轮机英语试题及答案练习。

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  • 单项选择题
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试卷预览
1
The most common contaminate of governor hydraulic fluid is _____.
  • A.moisture
  • B.dirt
  • C.acid
  • D.air
2
When a crankshaft has to be handled outside the engine, it should be carefully supported in a manner which will avoid _____ high bending moments on it.
  • A.compressing
  • B.interposing
  • C.imposing
  • D.pounding
3
_____ is a machine by which electrical energy is transformed into mechanical energy.
  • A.An alternator
  • B.An electric motor
  • C.A diesel engine
  • D.A main switchboard
4
Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause _____.
  • A.low compression pressure
  • B.increased piston wear
  • C.increased cylinder lube oil consumption
  • D.poor contact between compression rings and liner
5
If the refrigeration compressor crankcase is sweating, the cause may be due to _____.
  • A.a shortage of refrigerant
  • B.the compressor running continuously
  • C.liquid refrigerant returning to the compressor
  • D.the compressor short cycling on the high pressure cutout
6
The presence of air in the condenser of a refrigeration system will _____ the condensing pressure.
  • A.increase
  • B.reduce
  • C.maintain constant
  • D.None of the above is true
7
Which of the following statements is true concerning the cetane number of diesel fuel?
  • A.The cetane number affects the amount of injection lag
  • B.The cetane number is an indication of the fuels viscosity
  • C.Ignition lag is reduced with fuels having a high cetane number
  • D.The cetane number is of little significance in the combustion process
8
Which of the listed classes of fire would most likely occur in the engine room of a vessel?
  • A.Classes A and B
  • B.Classes B and C
  • C.Classes C and D
  • D.Classes A and D
9
Which one is not true? .
  • A.Two main areas of skill are involved in the construction of ship
  • B.There are distinct divisions in responsibilities between naval architects and marine engineers
  • C.Each ship will assume varying proportions according to its type
  • D.Ships can be divided into different categories from different perspectives
10
The basic training in fire prevention and fire fighting should include the theoretical elements which should cover _____.
  • A.the three elements of fire and explosion
  • B.lower and upper flammable limits
  • C.classification of flies and applicable extinguishing agents
  • D.All of the above
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