自考10012轮机英语(二)模拟试题11

试题数量：52道
免费次数：登录后，试做1次
练习次数：217次
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试卷简介

该试卷共包含52道试题，试题类型如下:

单选题

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1、[单选题]The cylinder covers are secured by eight elastic holding down arranged in four pairs.
- A.nuts
- B. screws
- C. studs
- D. flanges
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2、[单选题]There is a support ring between the cylinder block and collar of the cylinder liner, thus carrying both the liner and the cylinder coverIt also passes to the cooling bores and to the cover.
- A.cooling water
- B. cooling oil
- C. refrigerant
- D. lubricate oil
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3、[单选题]A clearly visible beneath of RT-flex engines is their operation at all ship speedsThis is achieved by the superior combustion performance.
- A.shockless
- B. smokeless
- C. no vibration
- D. noiseless
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4、[单选题]The key feature of the Sulzer RT-flex system is that it gives complete freedom in the and operation of fuel injection and exhaust valve actuation.
- A.metering
- B. control
- C. using
- D. timing
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5、[单选题]The development goals for a large marine engine are many often interact and in some cases even with each other.
- A.conflict
- B. accord
- C. harmonize
- D. struggle
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6、[单选题]The piston crown employs the usual jet-shaker principle with an arrangement of cooling bores in the crown so that the surface temperatures of the crown are moderate with a very even distribution.
- A.water cooling
- B. oil cooling
- C. air cooling
- D. combined cooling
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7、[单选题]The scavenge air receiver is of a simplified and modular design with integral non-return flaps, hanging cooler and two auxiliary air blowers.
- A.dozens
- B. parcels
- C. bundles
- D. gallons
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8、[单选题]For auxiliary engines the permissible overload is ____ for one hour every twelve hours.
- A.10%
- B. 15%
- C. 20%
- D. 25%
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9、[单选题]Around the combustion chamber, all the main components are to give low thermal strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner.
- A.drill cooled
- B. hole cooled
- C. tube cooled
- D. bore cooled
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10、[单选题]Around the combustion chamber, all the main components are bore cooled to give low strains and the smallest, circumferentially symmetric deformations for good sealing between piston rings and liner.
- A.thermal
- B. mechanical
- C. plastic
- D. elastic
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11、[单选题]The top piston ring is plasma coated to give the lowest wear rate to reach the goal of two-years’ with sufficient margin.
- A.TBO
- B. CEO
- C. CFO
- D. MCR
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12、[单选题]Great care is dedicated to the removal of from the scavenge air.
- A.gravity
- B. viscosity
- C. density
- D. humidity
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