三管轮轮机英语新题

1、1.The cylinder covers are secured by eight elastic holding-down_ arranged in four pairs.A. nuts B. screws C. studs D. flanges2.There is a support ring between the cylinder block and the collar of the cylinder liner, thus carrying both the liner and the cylinder cover. It also passes _ to the cooling

2、 bores and to the coverA. cooling water B. cooling oil C. refrigerant D. lubricate oil3.A clearly visible benefit of RT-flex engines is their _ operation at all ship speeds. This is achieved by the superior combustion performance.A. shockless B. smokeless C. no vibration D . noiseless4.The key featu

3、re 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. timing5.The development goals for a large marine engine are many, often interact and in some cases even_ with each otherA. conflic

4、t B. accord C. harmonize D. struggle6.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 coolin

5、g7.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. Gallons8. For auxiliary engines the permissible overload is_ for one hour every twelve hours.A. 10% B.15% c.20% D.25%9 T

6、op piston rings are plasma coated. It gives added safety for the _ of new liners.A. running-in B. running-out C. running_on D.running_down10.Around the combustion chamber, all the main components are _ to give low thermal strains and the smallest, circumferentially-symmetric deformations for good se

7、aling between piston rings and liner.A. drill cooled B. hole cooled C. tube cooled D. bore cooled11.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.

8、A. thermal B. mechanical C. plastic D. elastic12. The top piston ring is plasma coated to give the lowest wear rate to reach the goal oftwo-years _ with sufficient margin.A. TBO B.CEO C.CFO D. MCR13. Great care is dedicated to the removal of _ from the scavenge air.A. gravity B. viscosity C. density

9、 D. humidity14.The heavy-duty lubricating oil with chemical_ has been widely introduced in recent years.A. additives B. behavior C. coolant D. desiccant15. _ on board ship are used to control and distribute the electrical energy generated by generators.A. Governors B. Alternators C. Blackboards D. S

10、witchboards16.These acid residues must be prevented from entering the crankcase, otherwise the lube oil would be _ .A. contaminated B. emulsified C. deteriorated D. oxidated17. Main engines as well as auxiliary engines operating on heavy fuel should have continuous _ on the lubricating oil, either a

11、ccording to the bypass or batch principles.A. filtering B. centrifuging C. depositing D.operating18. In engines with _ system, the lubricating oil can be added to the engine through the filling hole in the crankcase cover, by using a hand oil can, or through the separator pipeA. lubricating oil B. d

12、ry sump C. circulated tank D. wet sump19. Governors are equipped with _ motors for synchronizing, load sharing and frequency control.A. speed setting B. load setting C. speed changing D. load setting20. Engines, which are to be run in parallel have governors specially adapted for the same _ , about

13、4% to obtain basic load sharing.A. speed settings B. speed droops C. speed drops D. speed changes21. The air required for combustion is taken from the engine room through a filter fitted on the turbocharger. This reduces the risk for too _ and contamination of the combustion air.A. high temperatures

14、 B. low temperatures C. wet D. dirty22. The oil sump, a light welded design, is mounted on the engine block from below and sealed by _.A. O-ring B. gasket C. washer D. packing船舶受损严重。The vessel seriously damaged机舱中水位正在上涨。Water level in engine room is increasing.一套安全阀送车间拆卸，检查，研磨。 One set of safety val

15、ve to be sent to workshop for dismantling inspection and grinding.蒸发管海水侧化学清洁，压力试验0.7MPa。 The sea water side of evaporator pipes to be cleaned with chemical and pressure test up to 0.7 MPa to be carried.12:30断电，原因不明。 12：30 Black out occurred with unknown reason发现排烟温度过高。 Exh. Temp. found too high.港口国检

16、查官检查了油水分离器。 PSCO inspected the oil/water separator我们将补充300吨燃料油。 We will replenish 300 tons of fuel oil.关联题：1. The Sulzer multi-level accumulator system for cylinder lubrication has proved particularlybeneficial to good piston-running behaviour. The cylinder oil is fed to the liner suface at two leve

17、ls of quills. This lubricating oil and is therefore considered to be efficient and economical. The lubrication oil pumps are driven by a frequency-controlled electric motor and the oil is distributed to the quill accumulators by oil distributors. With this solution, much less piping is required. The

18、 cylinder oil feed rate is controlled according to the engine load. Adjustments depending on the engine condition and for running-in can be easily made by using software in the engine control system.1. What is the main idea of this passage?A. The lubrication system of main engineB. How to control th

19、e lubricationC. The cylinder lubrication of main engineD. How to make running-in easier2. How many tiers of cylinder oil quillsA. one B. two C. three D. four3. How is the cylinder oil feed rate controlled?A. according to the engine speedB. according to the engine loadC. according to both the engine

20、speed and loadD. not mentioned in this paragraph4. How are the lubrication oil pumps driven?A. by camshaft B. by hydraulic motorC. by pneumatic motor D. by electric motor2. The clearly visible benefit of RT-flex engines is their smokeless operation at all ship speeds.This is achieved by the superior

21、 combustion performance with the common-rail fuel injection. This system maintains the fuel injection pressure at the optimum level right across the enginespeed range, ensuring optimum combustion under all operating conditions. In addition, a selective shut-off of single injectors at very low speeds

22、 and an optimized exhaust valve timing help to keep smoke emissions below the visible limit.Sulzer RT-flex engines also have the advantage of steady running at lower speeds than engines with mechanically-controlled injection. They can run very steadily, and withoutsmoking, at 10-12% of nominal speed

23、, which for the RT-flex 60C is about 10-14rpm. This is made possible by the precise control of injection, together with the higher injection pressures achieved at low speed, and the sequential shut-off injectors.1. According to the first paragraph , the advantage of common-rail injection is:A. smoke

24、less operation B. shockless operationC. noiseless operation D. no vibration operation2. According to above massage, RT-flex engine can optimize:A. fuel injection pressure B. combustionC. exhaust valve timing D. all above3. when the RT-flex engine working on very low speed,A. the injectors will stop

25、workingB. some injectors will be closed all the timeC. the injectors will work one by oneD. the injectors will be lifted sequentially4. The RT-flex engine can run at very low speed, this is made possible by followingthings except _ .A. the precise control of injectionB. the higher injection pressure

26、sC. the optimized exhaust valve timingD. the sequential shut-off injectors3. The fuel injection equipment and system piping are located in a hot-box, providing maximum reliability and safety when using preheated heavy fuels. The fuel oil feed pipes are mounted directly to the injection pumps, using

27、a specially designed connecting piece. The return pipe is integrated in the tappet housing.There is one fuel injection pump per cylinder with shielded high pressure pipe to the injector. The injection pumps, which are of the flow-through type, ensure good performance with all types of fuel. The pump

28、s are completely sealed off from the camshaft compartment. The fuel injection is stopped by setting the fuel rack to zero position. For emergencies the fuel rack of each injection pump is fitted with a stop cylinder. The blocking device can be operated by operator. The fuel pump and pump bracket are adjusted in manufacturing to tight tolerances. This means that adjustments are not