轮机英语·船舶辅机·分油机
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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 in operation or not.
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。
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。A
B. maintained by the number of disks in the disk stack
C. nonexistent
D. maintained 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】。C
【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 oil separator.
A. sliding bowl bottom B. bowl hood C. bowl D. filter units
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.
A. centrifuge B. electric motor C. bowl assembly D. driving motor
【解析】“分油机包括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。C
11.What does the centrifuge consist of ?
【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-waterinterface should be_____.
A. maintained by the ring dam
A. discharged with the 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
【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 oil’s _______.
A. viscosity B. moisture content C. sediment content D. specific gravity
【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“【分杂机】”。D
10.“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.
7.Optimum cleaning effect in a lube oil purifier is achieved by _______.
A. keeping the lube oil in a state of low viscosity for a long period in the centrifuge bowl
5.Water is best removed from lubricating oil by ______ .
A. silica gel cartridges B. pressure filters C. paper edge filters D. centrifuging
【翻译】水可以通过【离心分离机】从滑油中满意地移除。D
【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。A
6.What is the meaning of the term “clarification” ?
A. Separation of solid contaminants from a iquid.
B. Separation of two insoluble liquids with different densities, and at the same time , removal of solids.
8.Which of the following is used to purify water and foreign 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。C
Throughput and back pressure：分油量与背压越大，则界面向外扩展，反之亦然
②比重环（内径）的选取，要根据你要分离的油的密度（比重）
③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
④作用：净化燃油和滑油
对应习题：2.5.1【3,4，5,10,13，14,15,17，19，22，27，32，33，36，39，40，
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
B. The quantity of water to be removed from the fuel.
C. The specific gravity of the fuel.
D. The quantity of dirt to be removed from the fuel.
【解析】【燃油的比重】决定了比重环的直径。C
【解析】分油机的比重环的大小取决于油的【比重】。D
3.Which of the following substances can be 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 _____.
9.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
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】。A
7.What is the meaning of the term “purification” ?
A. Separation of two insoluble liquids with different densities, and at the same time, removal of solids.
4.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
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.
A. Carbon particles B. Lube oil C. Gasoline D. 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
①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
B. keeping a high flow rate through the purifier
C. keeping the lube oil in a state of low viscosity for a short period in the centrifuge bowl
D. keeping a low temperature and high flow rate through the purifier
6.A 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。D
A. Motor drive B. Bowl assembly C. Both A and B D. Neither A nor B
【解析】离心分离机包括马达区别以及分离筒组件。C
12.Which of the following substances is satisfactorily removed from the fuel by a centrifugal oil purifier?
A. The cleaning of the bowl and the disc depends on whether the ejection process is in operation or not.
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。
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。A
B. maintained by the number of disks in the disk stack
C. nonexistent
D. maintained 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】。C
【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 oil separator.
A. sliding bowl bottom B. bowl hood C. bowl D. filter units
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.
A. centrifuge B. electric motor C. bowl assembly D. driving motor
【解析】“分油机包括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。C
11.What does the centrifuge consist of ?
【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-waterinterface should be_____.
A. maintained by the ring dam
A. discharged with the 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
【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 oil’s _______.
A. viscosity B. moisture content C. sediment content D. specific gravity
【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“【分杂机】”。D
10.“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.
7.Optimum cleaning effect in a lube oil purifier is achieved by _______.
A. keeping the lube oil in a state of low viscosity for a long period in the centrifuge bowl
5.Water is best removed from lubricating oil by ______ .
A. silica gel cartridges B. pressure filters C. paper edge filters D. centrifuging
【翻译】水可以通过【离心分离机】从滑油中满意地移除。D
【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。A
6.What is the meaning of the term “clarification” ?
A. Separation of solid contaminants from a iquid.
B. Separation of two insoluble liquids with different densities, and at the same time , removal of solids.
8.Which of the following is used to purify water and foreign 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。C
Throughput and back pressure：分油量与背压越大，则界面向外扩展，反之亦然
②比重环（内径）的选取，要根据你要分离的油的密度（比重）
③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
④作用：净化燃油和滑油
对应习题：2.5.1【3,4，5,10,13，14,15,17，19，22，27，32，33，36，39，40，
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
B. The quantity of water to be removed from the fuel.
C. The specific gravity of the fuel.
D. The quantity of dirt to be removed from the fuel.
【解析】【燃油的比重】决定了比重环的直径。C
【解析】分油机的比重环的大小取决于油的【比重】。D
3.Which of the following substances can be 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 _____.
9.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
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】。A
7.What is the meaning of the term “purification” ?
A. Separation of two insoluble liquids with different densities, and at the same time, removal of solids.
4.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
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.
A. Carbon particles B. Lube oil C. Gasoline D. 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
①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
B. keeping a high flow rate through the purifier
C. keeping the lube oil in a state of low viscosity for a short period in the centrifuge bowl
D. keeping a low temperature and high flow rate through the purifier
6.A 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。D
A. Motor drive B. Bowl assembly C. Both A and B D. Neither A nor B
【解析】离心分离机包括马达区别以及分离筒组件。C
12.Which of the following substances is satisfactorily removed from the fuel by a centrifugal oil purifier?