轮机英语船舶辅机分油机.docx

1、轮机英语船舶辅机分油机轮机英语船舶辅机分油机考点1.分油机的基本结构对应习题：2.5.1 【1,2,9,16,20，21，30，34，46,51，58，1.The _ is not a component of an oil separator.A. sliding bowl bottom B. gravity disc C. separating disc D. scum valve【翻译】不是分油机的部件。D【分析】ABC都是分油机的基本部件，而D.scum valve上排污阀是锅炉部件。2.The operating water is supplied under the _ of an

2、 oil separator.A. sliding bowl bottomB. bowl hoodC. bowlD. filter units【解析】工作水被供应是从分油机的【滑动底盘】供应的。3.In the operation of a lube oil clarifier , the position of the oil-water interface should be_. A. maintained by the ring dam B. maintained by the number of disks in the disk stack C. nonexistent D. mai

3、ntained by the diaphragm-type , weir control valve【解析】对于分杂机， 油水分界面的位置是【不存在的】。C4.Which ring dam arrangement should be used for centrifugal purification? A. The largest inside diameter ring without loss of oil B. The largest outside diameter ring without loss of oil C. The smallest inside diameter rin

4、g without loss of oil D. The smallest outside diameter ring without loss of oil【翻译】对于离心分油机，比重环的尺寸应该是【不会损失油最大内径的环】。A【分析】比重环内径越大，油水分界面越向外，那么能净化的油越多 ，净化速率越高。5.As with the maintenance, which of the following is not true?A. The cleaning of the bowl and the disc depends on whether the ejection process is

5、in operation or not.B. We can only use the special tools in stripping down the bowl.C. As with the centrifuge, left hand threads are used.D. The centrifuge should always be maintained good balance.【翻译】对于保养，【分离筒的清洁取决于排渣过程是否在进行】是错误的。 A6.What is the meaning of the term “clarification” ? A. Separation o

6、f solid contaminants from a liquid. B. Separation of two insoluble liquids with different densities, and at the same time , removal of solids. C. Separation in a single system D. Separation of water【解析】分杂就是【从液体中分离固体杂质】。A7. What is the meaning of the term “purification” ? A. Separation of two insolub

7、le liquids with different densities, and at the same time, removal of solids. B. Separation of solid contaminants from a liquid. C. Operation as the 2nd separator in a a serial system D. Cleaning a liquid【解析】分水是指【两种不溶解的液体的分离，顺带有固体的分离】，比方说油水。A8.Which of the following is used to purify water and forei

8、gn matters from the fuel oil ?A. Compressor B. Evaporator C. Separator D. Fuel pump【解析】【分油机】被用来分离油中的水和外来杂质。 C9.When a centrifuge is arranged to separate impurities and small amount of water from oil, it is known as a _.A. purifier B. filter C. separator D. clarifier【解析】如果离心式分油机设计用来分离杂质和少最的水，则被称作“【分杂

9、机】”。 D10.“A centrifuge consists of an electric motor driving a vertical shaft on the top of which is mounted the bowl assembly”. According to this sentence, we can know that a(n) _ is mounted on the top of the vertical shaft.A. centrifuge B. electric motor C. bowl assembly D. driving motor【解析】“分油机包括

10、带动竖直轴的电动机，在分离筒上部装有分离筒部件”。以上说明，分离简装在竖直轴上。 C11.What does the centrifuge consist of ?A. Motor drive B. Bowl assemblyC. Both A and BD. Neither A nor B【解析】离心分离机包括马达区别以及分离筒组件。 C12.Which of the following substances is satisfactorily removed from the fuel by a centrifugal oil purifier?A. Carbon particlesB.

11、Lube oilC. GasolineD. Diesel fuel【解析】残炭颗粒可以通过离心分离机被满意地从燃油中移除。A考点2.工作原理及作用油水分界面：Gravity disc：内径越大，则界面向外扩展；反之亦然Temperture：温度越低，油的粘度越大，密度越大，则界面向外扩展，反之亦然Throughput and back pressure：分油量与背压越大，则界面向外扩展，反之亦然比重环（内径）的选取，要根据你要分离的油的密度（比重）分油机利用离心力把比重大的物质分离到外围，把比重小留在内侧作用：净化燃油和滑油对应习题：2.5.1【3,4，5,10,13，14,15,17，19，

12、22，27，32，33，36，39，40， 41，42，43，44,45，49，50，52，53，54,55，57，59，1.Which factor determines the ring dam size for a fuel oil tubular bowl type centrifugal purifier?A. The viscosity of the fuel.B. The quantity of water to be removed from the fuel.C. The specific gravity of the fuel.D. The quantity of dirt

13、 to be removed from the fuel.【解析】【燃油的比重】决定了比重环的直径。C【注意】比重环的选取，要根据你要分离的油的密度2.The size of the discharge ring used in a lube oil purifier is determined by the oils _.A. viscosityB. moisture contentC. sediment contentD. specific gravity【解析】分油机的比重环的大小取决于油的【比重】。D3.Which of the following substances can be

14、satisfactorily removed from diesel fuel by centrifuging? A. Sludge B. Gasoline C. Fuel oil D. Lube oil【翻译】【油渣】可以通过离心分离从燃油中满意地被移除。A【分析】离心分离适用于分离悬浮固体和不相溶的液体，而BCD汽油、柴油、滑油，相似相溶，不适于离心分离4.In a tubular-bowl type centrifugal lube oil purifier , any solids separated from the oil are _. A. discharged with the

15、 water B. removed through the waste drain C. retained in the bowl D. solidified on the upper cover 【翻译】对于滑油分油机，油中的固体【残留在分离筒外围】。 C【分析】请看图解5.Water is best removed from lubricating oil by _ . A. silica gel cartridges B. pressure filtersC. paper edge filtersD. centrifuging【翻译】水可以通过【离心分离机】从滑油中满意地移除。 D6.A

16、 centrifuge will satisfactorily remove which of the following substances from lube oil ? A. Diesel fuel B. Gasoline C. Fuel oil D. Carbon particles【翻译】离心分离机可以将滑油中的【残炭颗粒】满意地移除。D7.Optimum cleaning effect in a lube oil purifier is achieved by _.A. keeping the lube oil in a state of low viscosity for a

17、long period in the centrifuge bowlB. keeping a high flow rate through the purifierC. keeping the lube oil in a state of low viscosity for a short period in the centrifuge bowlD. keeping a low temperature and high flow rate through the purifier【翻译】滑油分油机的最佳净化效果的实现是【保持滑油在分离筒处于低粘度运行长时间】。A【分析】净化时间适当增加，净化

18、就越彻底。8.Which items are important to get an optimal separation? A. Correct flow, pressure and temperature(viscosity). B. Max. flow and min. pressure C. Low temperature and flow D. Max. flow and high temperature【翻译】【合适的流量，压力以及温度】对于最佳分离是至关重要的。A【分析】流量、压力、温度影响了分界面9. If the temperature increases, what wil

19、l happen to the interface in the bowl? A. Interface moves outwards from center B. Increase of the purification capacity C. It will have no effect on the interface D. Interface moves towards center【解析】如果温度上升，【分界面将向中心移动】。 D10.For a large increase in the specific gravity of the oil , the gravity disc h

20、ole diameter should be _. A. increased B. kept the same C. of no importanceD. reduced【解析】对于油的比重大大增加，比重环的直径应该减小。 D11.Dirty oil must _ before being used again.A. wash B. be mixed C. loosen D. be purified 【解析】脏油在再次使用前必须【被净化】。 D12.Oil separation is achieved in a clarifier bowl where the impurities and w

21、ater collected at the bowl _.A. bottom B. center C. top D. periphery 【解析】在分杂机进行分离时，杂质和水聚集在分离筒的【外围】。D13A _ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank. A. filter B. distiller C. centrifuge D. generator【解析】【离心分油机】用来清洁从储存柜提供润滑油系统的润滑油。C14.

22、The position of the interface between oil and water within a centrifuge is achieved by the use of _.A. gravity discB. a stack of discsC. centrifugal bowlD. main sealing ring【解析】离心式分油机中，油水之间的界面是通过比重环来实现的。A15.Which ring dam arrangement should be used for centrifugal purification? A. The largest inside

23、 diameter ring without loss of oil B. The largest outside diameter ring without loss of oil C. The smallest inside diameter ring without loss of oil D. The smallest outside diameter ring without loss of oil【翻译】对于离心分油机，比重环的尺寸应该是【不会损失油最大内径的环】。A【分析】比重环内径越大，油水分界面越向外，那么能净化的油越多 ，净化速率越高。16.In a purifier, t

24、he interface between the liquid seal and the oil should be positioned as close as possible to _.A. the outlet of oil B. the bowl peripheryC. the outlet of water D. the center of bowl【解析】在分水机中，油水界面应尽可能地靠近分离筒的四周。 B17. The interface between the liquid(water) seal and the oil should be positioned _ poss

25、ible to the bowl periphery.A. as far as B. as close as C. as soon as D. as closer as【解析】在分水机中，油水界面应尽可能地靠近分离筒的四周。 B18.The position of the interface between oil and water within a centrifuge is achieved by the use of _.A. gravity discB. a stack of discsC. centrifugal bowlD. main sealing ring【解析】离心式分油机

26、中，油水之间的界面是通过比重环来实现的。A19. Which of the following is not true about the gravity disc?A. The location of the interface can be changed by exchanging the diameter of the gravity disc.B. A larger diameter of gravity can cause the interface far away from bowl center.C. The diameter of the gravity should no

27、t break the water seal.D. In practice, the use of monograms is the best operation.【解析】实际上，使用有图案刻纹的比重环是最恰当的是错误的。D20.High speed rotation in a centrifugal purifier can produce a force _ the force of gravity. A. many thousand times larger than B. many thousand times smaller C. the same as D. none of the

28、 other alternatives【解析】离心式分油机高速旋转时产生的离心力比重力大几千倍。 A21.Oil separation is speeded up by the use of _. A. oily water separator B. strainer and fine filter C. drain cock D. centrifuge【解析】分油可以通过离心分离来加速。 D22.The setting or positioning of the interface between oil and water is achieved by the use of _ at th

29、e outlet of the centrifuge.A. dam ringB. flushing waterC. operating waterD. neck ring【解析】油水分界面的设置以及定位是通过比重环的使用来实现的。 A23.Both fuel oils and lubricating oils require _ before passing to the engine. A. treatment B. heating C. cooling D. boiling【解析】燃油和滑油进入发动机前都需要进行处理。A24.The treatment of the fuel oils i

30、nvolves storage, heating, filtering and _. A. centrifuging B. pressurizingC. atomizationD. igniting 燃油处理包括储存、加热、过滤和离心分离。 A25. Why is it necessary to remove impurities from fuel oil and lube oil before being used?A. To ensure good combustion B. To reduce wear C. To reduce corrosion D. Any one of the other alternatives【解析】对于燃油和滑油在使用之前移除杂质是必要的，因为可以确保完全燃烧，减少磨损和腐蚀。 D26.Which method of removing impurities is the most widely used?A. Coarse filtering B. Fine f