第47期 海船船员适任考试 《轮机英语》试题

1、中华人民共和国海事局2009年第1期海船船员适任统考试题 （总第47期）科目：轮机英语 试卷代号：805适用对象：无限/近洋航区3000KW及以上船舶二/三管轮 （本试卷卷面总分100分，及格分70分，考试时间100分钟）答题说明：请选择一个 最合适的答案，并将该答案按答题卡要求，在其相应位置上用2B铅笔涂黑，第1题至88题，每题1分，第89题至96题，每题1.5分。 一、单项选择题1. The _engine is used for alternators and some times for main propulsion with a gearbox provide a propelle

2、r of between 90 to 120 rpm.A. four-stroke B. Two-stroke C. Slow speed D.reversible 2. The abbreviation "MIP" stand for_.A. middle indicating pressure B. mean indicated pressure C. Mean indicated pitch D. Middle indicated power 3. The cetane number of a diesel fuel oil indicates its_.A. Vis

3、cosity B. Acid content C. Heating value D. ignition quality4. In a two-stroke engine the camshaft rotates at _the engine rotational speed. A. Half B.twice C. The same speed as D. Four times5. A diesel engine is similar to a gasoline engine except that the former has no_.A. Cross-head B. Cylinder C.

4、Connecting rod D. spark plug6. It is easier to replace a dry cylinder liner than a wet one because_. A. Of the thin wall thicknessB. honing makes it easier to maintain the desired oil film C. Water seals are not requiredD. It fits more loosely due to a decrease in heat transfer through the composite

5、 wall7. A main bearing consists of two shells which are secured by means of studs and _.A. Tie rods B. Through bolts C. Lead wires D. Bearing caps8. However fast or slow the combustion rate, it is still a _between carbon, hydrogen, sulph and oxygen that releases heat.A. Physical deformation B. State

6、 exchange C. Chemical reaction D. Coalescence9. During the fuel injection period, fuel pressure must exceed cylinder gas pressure to _.A. Ensure penetration and distribution of the fuel in the combustion chamber B. Ensure the needle valve is flushed clean during each injection C. Prevent combustion

7、gas blowback into the open needle valve D. Prevent reflected pressure waves when the needle valve closes10. In a diesel engine lube oil system, which of the following parts should be lubricated first? A. Camshaft bearing B. Main bearing C. Piston crowns D. Cylinder walls11. In a diesel engine closed

8、 fresh water cooling system, the amount of coolant flowing through the heat exchanger is controlled by the _. A. Suction pressure regulator B. Thermostatic bypass valveC. Sea water temperature D. Water level in the expansion tank12.which of the diesel engine component listed increases air density an

9、d helps to improve engine operating efficiency?A. impeller B. Air bottle C. Air cooler D. Exhaust diffuser13. a large two-stroke/cycle direct reversing diesel engine is to be reversed. Prior to the admission of starting air you must_.A. line up the engine for restarting with light diesel oil B. Repo

10、sition the fuel injection camC. Change the intake and exhaust valve cam positions D. Place the starting cam in the intermediate position14. Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators? A. Sensitivity B. Power C.

11、Speed droop D. Compensation15. Thermocouple pyrometers are used on large, main propulsion diesel engines to indicate the temperature of the _.A. Cooling water leaving each cylinder B. Fuel oil entering the injector C. Exhaust gases at various locations D. Lube oil at the bearing supplies16. After st

12、arting a diesel engine, which of the listed operating conditions should be checked first?A. Air box pressure B. Lube oil pressure C. Exhaust temperatures D.raw water pressure17. To shut down a diesel engine after it exceeds the set maximum speed, which type of device listed should be used ?A. Speed

13、limiting governor B. Over-speed governor C. Over-speed trip D. Over-speed relay18. The treatment of the fuel oils involves storage, heating, filtering and_. A. Centrifuging B. Pressurizing C. Atomization D. Igniting19. A propeller, in order to operate efficiently, must rotate at a relatively _ speed

14、.A. High B. Low C. Fast D. lowly 20. Latent heat changes the _of water.A. physical state B. Temperature C. Atmospheric pressure D. Sensible pressure21. The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent_.A. Accidental dry firing and ov

15、erpressure B. Uncontrolled fires in the furnace C. Explosions in the boiler furnace D. Overheating of the pressure parts 22. Improper maintenance of the fuel oil burners in an automatically fired中国海事服务中心 试卷113125391.doc 第1页，共6页auxiliary boiler could result in_.A. increased fuel consumption B. Increa

16、sed feed-water consumption C. Fuel pump failure D. Combustion control system failure23. Burner ignition failure in an automatically fired auxiliary boiler would be caused by_.A. A burned out solenoid in the oil supply valve B. High temperature excess air C. Incorrectly setting the hot-well dump valv

17、e D. An incorrectly positioned burner snubber relay24.if the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause may be_.A. High steam pressure in the boiler B. Abnormally high feed-water temperatureC. Abnormally high boiler water temperature D. Steam demand ex

18、ceeding feed pump capacity25. Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid_pressure.A. Depending on B. In relative to C. Regardless of D.because of 26. A spur gear pump should be operated with the discharge valves_. A. Slightly opened B.

19、Throttled C. Fully opened D. Halfway opened 27. An independent bilge suction is required for_.A. Ballast tanks B. Sludge tanks C. Machinery space bilges D. Cargo hold bilges28.To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the _.A. Pump must always be primedB. Volut

20、e must impart a radial and rotary motion of the waterC. Suction side connection must guide the liquid to the lantern rings D. Stuffing box should not be allowed any water leakage29. An inadequate reciprocating bilge pump discharge is most often caused by_. A. Defective safety valves B. Clogged sucti

21、on strainers C. Scarred cylinder walls D. Clogged drain valves30. In啊compression refrigeration plant, the hot, high pressure refrigerant gas is cooled by the sea water and becomes liquid in the_.A. Compressor B. Condenser C. Throttle valve D. Evaporator31. The_only allows for adjustment of temperatu

22、re in each room by the occupant manually controlling the air volume admitted.A. Central air conditioning system B. High velocity system C. Low velocity system D. Single duct system32. The opening of the humidifier's valve of air-conditioner should be _,when the circumstance temperature is raised

23、 to above 58 in the winter. A. Decreased B. Increased C. Fixed D. Closed33. Under normal conditions. The quantity of air circulation becomes less and less. What is the reason?A. Dirty delivery ducts B. Too much refrigerant C. The fouling filters D. High temperature outside34. When bilge water is hea

24、ted in a holding tank, which one of the following statement is not accurate?A. The relative high temperature facilitates primary gravity separation B. Most of the oil and organic solvents are raised to the top layer.C. The relative high the temperature is, the more the top oil will be collected D. T

25、he normal high temperature has little use on the separation of emulsified oil 35. If separating effect of the oily water separator is not good, we can improve it by_.A. Flushing separator with cold water B. increasing bilge water supply flow C. Heat oily water properly D. Opening manual oil discharg

26、e valve 36. Which is the pollution prevention equipment?A. Booster pump B. Evaporator C. Incinerator D. Cooler37. When does auxiliary burner of rotary nozzle type incinerator put into use? 、when igniting 、the waste oil for dealing with is too much 、before stopping incineratorA. + B. + C. + D. +38. w

27、hen anaerobic bacteria convert the sewage to an inert sludge,_. A. No oxygen is needed B. Oxygen is necessary C. Oxygen is given off D. no gas is produced39. For a I.O.purifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will_.A. Be interrupte

28、d B. Move downwards C. Move outwards D.retain original position40. When separating the lube oil without additive, it is usually working with hot water; the aim is to remove _from it .A. Acid B. Oil sludge C. Mechanical impurity D. Salinity41. If the bowl of a disk type centrifugal purifier when oper

29、ated as a separator is not primed the _.A. Oil has a tendency to emulsify in the bowlB. Purifier will act as a clarifier at the discharge ring C. Oil will be lost through the water discharge portsD. Oil solids will be deposited only at the intermediate top disk42. Tube leaks in the distillate cooler

30、 of a two stage flash evaporator will result in_.A. Loss of second stage vacuum B. Contamination of the distillateC. Lower feed mfet temperature D. Contamination of the second stage condenser43. Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator, are removed b

31、y the _.中国海事服务中心 试卷113125391.doc 第2页，共6页A. Spray pipes B. Demisters C. Condensers D. Splash baffles 44. Overflow valve usually be used to _. A. Control the fluid flow through itB. Prevent the pressure before overflow valve over the specified value C. Make the pressure after overflow valve steady D.

32、Control the direction of oil flow45. Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?A. The hydraulic pumps B. Valves C. Hydraulic cylinders D. Hydraulic motors46. Cargo handling unit is rated according to the _to be lifted. A. Car

33、go crane B. Jib C. Safe working load D. Oil pressure47. The part of the anchor windlass that engages the anchor chain for lifting is called the _.A. Warping head B. Fair lead C. Wildcat D. Capstan48. In automatic _, the winch may be overhauled and wire is paid off the barrel at a Pre-determined maxi

34、mum tension.A. Cranes B. Windlass C. Capstans D. Mooring winches 49. The major source of chemical contaminants in hydraulic fluid is _. A. Microscopic steel shavings B. Abrasive waste C. Anti- oxidant compounds D. Oxidation by-products50. Before doing any work on a hydraulic system equipped with acc

35、umulators, you should_.A. Drain the accumulators and purge with oxygenB. Bleed off all stored energy from the accumulators completely C. Charge the accumulators to prevent system energy lossD. Pump the hydraulic fluid into the accumulators to prevent fluid loss 51. One factor that determines the fre

36、quency of an altemator is the _.A. Number of turns of wire in the armature coil B. Number of magnetic poles C. Strength of the magnets used D. Output voltage52. The frequency output of an operating alternator is controlled b the _. A. Relative speed of the rotor poles B. Number of turns of wire in t

37、he armature coilC. Strength of the magnets used D. Output voltages53. Prior to closing the breaker when paralleling two AC generators ,. The recommended practice is to have the frequency of the incoming machine _. A. Slightly less than the line frequency B. The same as the line frequency C. Slightly

38、 greater than the line frequency D. Have nothing to do with the line frequency54. If two A.C. Generators are to be operated in parallel, the load is distributed evenly by_.A. Mens of rheostat B. A balance coil C. Adjusting the governor setting D. Changing excitation55. The first requirement for logi

39、cal troubleshooting of ant system is the ability to _.A. Collect all available data on a casualty B. Recognize normal operation C. Identify the probable cause of a symptom D. Isolate the faulty component 56. _is(are) not power supplied by main switchboard directly.A. Steering gear and windlass B. Na

40、vigation light and radio power panel C. Navigation device power box D. Daily fresh water pump57. The emergency generator or emergency battery is connected to_on most large ships.A. Distribution boards B. Section boards C. Emergency switch boards D. Main switch boards58. _connectors hold best if a wi

41、re is accidentally pulled or a connection becomes loose.A. Ring type B. Fork type C. Spade type D. "Push on, pull off" type 59. The primary function of an electric motor is to _. A. Develop torque B. Generate high voltagesC. Produce a magnetic field D. Generate high electrical resistance60

42、. puses placed in series with a thermal trip-type circuit breaker are used for _.A. Time-delay protection B. Short-circuit protection C. Short duration surge protection surge protection D. Sustained overload protection61. Shore power must be _during dock repair.A. Disconnected B. Switched off C. Cut

43、 off D. Connected62. The operator of electrical motors should keep a constant check on the loads they carry because _.A. Low loads necessitate frequent insulation cleaning B. Exceeding nameplate values shortens useful life C. Energy is wasted if full loading is not utilized D. Power factor correctio

44、n methods are load dependent63. Before a marine diesel engine is started the cylinders and pistons must be _.A. Cooled to appropriate temperatureB. Warmed up gradually to appropriate temperature C. Opened up and renewed D. Ground and polished64. _is a precaution which contributes to avoiding trouble

45、 under normal operating conditions.A. Constant inspection B. Keeping constant load C. Remaining constant temperature D. Varying speed65. During ship manoeuvering , when the diesel is stopped, which of the following中国海事服务中心 试卷113125391.doc 第3页，共6页items is wrong?A. Keep all systems running normallyB.

46、Main engine is available at any momentC. Shut off the starting air bottle outlet valveD. Pay attention to the changes of the system parameters66. A tank which has been sealed for a long period of time can be dangerous because _.A. Steel surfaces consume oxygen by rusting B. Sealed tanks usually form

47、 a vacuumC. Moisture condenses in the tank, displacing the oxygenD. Most tank coatings give off poisonous vapors in the presence of moisture67. The class of fire on which a blanketing effect is essential to extinguish the fire is _.A. Class "A" B. Class "B" C. Class "C"

48、 D. Class "D"68. Fires in escaping flammable gas are quickly brought under control by_. A. Stopping the flow of gas B. Reducing the chemical chain reaction C. Increasing the oxygen supply D. Cooling below the autoignition point69. Which of the following statements is true concerning carbon

49、 dioxide when used as a fire extinguishing a gent？A. Carbon dioxide is corrosive when exposed to fireB. Carbon dioxide should be applied slowly to a large engine room fire C. Its total cooling effect is far greater than water D. Its smothering effect is excellent for class B fires70. While on watch

50、in the engine room. You hear a continuous sounding of the general alarm. Which of the following actions should you take? A. Make an entry en the official logbookB. Open the master control valves on the fixed CO2 system. C. Start the fire pump and check discharge pressure D. Secure auxiliary condense

51、r overboard discharge71. To determine that a compartment contains sufficient oxygen to sustain life, you should use a/an_.A. Explosimeter B. Oxygen indicatorC. Fresh air indicator D. Emergency escape breathing devece72. If the overflow tank high-level alarm sounds while the fuel oil tanks are being

52、topped off. The engineer should _.A. Close the static leg filling valve B. Close the overflow tank filling valve C. Reduce the fuel oil pumping rate D. Stop the fuel oil pumping operation73. The _tools is used in precision work to smooth or enlarge a slightly undersized hole.A. Round out B. Round fi

53、le C. Reamer D. Hole driller74. During the dock repair, each sea valve seat should be checked and ratified by _before reassembled. A. Chief engineer B. Surveyor C. The engineer D.the technique personnel of the shipyard75.the additional mark_in the classification certificate for machinery means propu

54、lsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically. A. BRC B. MCC C. AUT-0 D. AUT-176. The oil record book, as a part of the ship's official logbook, shall be kept on board and preserved for a period of _.

55、A. 3years after making the first entry B. 2years after the last entry C. 3months after last entry D. 3years after the last entry77. The valid period of the international oil pollution prevention certificate on board isn't more than_.A. One year B. Two years C. Four years D. Five years78. During

56、the PSC inspection under the provisions of SOLAS 74. Which one may not be regarded as clear grounds for ships' detainment?A. failure of the proper operation of emergency generatorB. Insulation of piping including exhaust pipes in engine room contaminated by oilC. Improper operation of bilge pump

57、ing arrangements D. Damaged sanitary pump79. "insufficiency of manning or insufficiency of certification of seafarers" is an identification of a _.A. Substandard ship B. Standard ship C. Over-standard ship D. Reference ship80. STCW 78/95 convention shall apply to seafarers_on board seagoin

58、g ships entitled to fly the flag of a party.A. Served B. Serving C. Surveyed D. Surveying81. All engineer officers and engine room ratings shall be aware of the serious effects of operational or accidental pollution of the marine environment and shall take all possible_to prevent such pollution, particul