海事局海船船员适任证书全国统考试卷：39804

1、中华人民共和国海事局2006年第1期海船船员适任证书全国统考试题(总第39期) 科目：轮机英语 试卷代号：804适用对象：近洋航区7503000KW船舶大管轮（本试卷卷面总分100分，及格分为70分，考试时间为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68题，每题1分，第69题至76题，每题1.5分,第77题至78题, 每题10分。一、 单项选择题：1. If the flame from combustion in the cylinder of a two-stroke engine passes the piston i

2、nto the space between the piston and the stuffing box, the accumulation of flammable mixture would be ignited, thus resulting in _.A. the crankcase explosion B. lifting of the cylinder safety valve C. a scavenge fire D. opening of the manhole 2. _is fully floating in both connecting rod small end an

3、d the piston skirt. A. The piston rod B. The cross head pin C. The gudgeon pin D. The crank-pin 3. _rods are not in proper condition so that too much fuel is supplied to the corresponding cylinder. A. Piston B. Sounding C. Regulating D. Connecting 4. _shows 1.2 meter and the specific gravity of the

4、oil is 0.96 . According to the measuring scale , that makes 150 tons. A. The piston rod B. The push rod C. The sounding rod D. The connecting rod 5. The main bearing shells often have a thin _of lead or indium(铟) to provide a layer giving protection against corrosion. A. flange B. flash C. plate D.

5、sheet 6. Which of the following statements is correct concerning the viscosity of lubricating oil? A. Viscosity will increase as temperature increases. B. Viscosity is a measure of a fluids internal resistance to flow. C. Viscosity will decrease as temperature decreases. D. Viscosity is not dependen

6、t on temperature. 7. The fuel oil is drawn from a tank in the double bottom and pumped to _.A. a buffer tank B. a centrifuge C. a service tank D. a settling tank 8. It is usual to give the main diesel engine a brief trial on power ahead and astern before _. A. the indicator cocks are closed B. “Stan

7、d By” is rung on the engine telegraph C. the engine is turned on by putting in starting air D. the steering gear is checked 9. A high temperature alarm or _. which will melt is used to guard against the explosion of compressor air pipelines? A. a flame trap B. a relief valve C. a fusible plug D. a b

8、ursting cap 10. _in what position the engine stops there will always be at least one of the cylinders with its starting air valve open to admit compressed air to start the engine. A. Because B. Owing to C. For D. No matter 11. The use of a poor quality piston cooling oil can lead to rapid deteriorat

9、ion of its properties with the resultant formation of deposits in the piston crown which in turn results in a considerable _ in heat transfer. A. advantage B. superior C. increase D. reduction 12. In the hydraulic system, _ is the power unit.A. oil pump B. control valve C. hydraulic motor D. fitting

10、s13. In a diesel engine, the main bearings are used between the _.A. connecting rod and the crankshaft B. wrist pin and the connecting rod C. camshaft and the engine block D. crankshaft and the engine block 14. The position of the interface between oil and water within the centrifuge is achieved by

11、the use of _.A. gravity disc B. centrifugal bowl C. a stack of discs D. main sealing ring 15. Load control on a diesel engine is accomplished by _.A. regulating the speed of the turbocharger B. rotating the fuel injector pump plunger C. regulating the speed of the fuel oil transfer pump D. changing

12、engine timing 16. Wed better take _to save fuel consumption, you know it would be useless to get there earlier. A. nominal speed B. economical speed C. rated speed D. slow speed 17. Tighten up the _.A. keyway B. shaft C. packing D. casing 18. Throttling in the _line of a centrifugal pump involves th

13、e risk of the pump cavitation. A. suction B. exhaust C. pressure D. discharge 19. With respect to centrifugal pump impellers, which of the following descriptions represents the correct centrifugal pump classification? A. Single stage or multistage B. High pressure or low pressure C. Open or close co

14、upled D. Horizontal or vertical 20. A donkey boiler is _. A. one to supply steam to the main propulsion turbine B. an auxiliary boiler C. A and B D. neither A nor B 21. The water in an auxiliary boiler should be tested for chloride content to determine _.A. total dissolved solids B. salt contaminati

15、on C. water hardness D. chlorine contamination 22. In a purifier changing to a gravity disc with larger hole diameter will move the interface towards the _.A. bowl periphery B. bowl center C. upper surface D. lower surface 23. Which of the listed materials would be considered as a burning class C fi

16、re? A. Fuel oil B. Wood C. Celluloid D. Electrical insulation 24. The _is fitted on an oily water separator. A. sliding bowl bottom B. gravity disc C. bowl D. liquid level detector 25. A class C fire would occur in _.A. bedding B. pipe insulation C. paint D. a generator 26. Here some oil in the oily

17、 water separator, as a result of its lower _, will separate and rise into the oil collection space. A. temperature B. viscosity C. density D. velocity 27. When the union purchase derrick is operated, one derrick is positioned over the quayside(码头) and the other almost vertically over the _.A. dock B

18、. hold C. pedestal D. machinery space 28. _unit is mounted so as to raise and lower the cable from the spurling pipe, which is at the top and center of the chain or cable locker. A. The cable lifter B. The hoisting motor C. The topping wire D. The life-raft 29. Before starting an air compressor, It

19、should be _.A. turned B. oil level checked C. filled with water D. A and B 30. When distilling salt water the cooling water discharging from the distiller is fed back to evaporator as feed water _.A. to cut down the amount of cooling water needed B. to prevent an excess amount of cooling water from

20、being discharged to the bilges C. to supply hot water to the evaporator for more economical operation D. None of the above is true. 31. After passing through the expansion valve the refrigerant should be in the state of _.A. vapor B. liquid C. solid D. None of the above is true. 32. A feeler or ther

21、mal bulb is used for the expansion valve to _.A. detect the temperature B. detect the pressure C. heat the refrigerant D. accelerate the refrigerant 33. _is used to produce electric power. A. An alternator B. A fresh water generator C. A compressor D. A clarifier 34. The division of the kilowatt loa

22、d between two AC generators operating in parallel is controlled by the settings and characteristics of the _.A. voltage regulators B. field rheostats C. reverse power relays D. prime mover governors 35. Which of the following electric motors would be the safest and most reliable to use on the main d

23、eck of a vessel in foul weather conditions? A. Sealed motors B. Drip proof motors C. Enclosed motors D. Watertight motors 36. 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 boards 3

24、7. A dead front switchboard is one _.A. without switches on it B. with insulated switches and no exposed terminals C. without circuit breakers D. without safety hand rails nor rubber mats 38. _control system is one in which the control action is independent of the output. A. Feed back B. Negative fe

25、ed back C. Close loop D. Open loop 39. “ gauge pressure ” means _. A. vacuum B. the excess of pressure above atmosphere C. figure on a gauge D. any of the above 40. Bourdon Tube is probably the most commonly used _measuring instrument. A. the absolute pressure B. the gauge pressure C. the vacuum pre

26、ssure D. the differential pressure 41. Remote control means that _. A. the system is manned manually B. the system is situated remotely from the operator C. the system is controlled automatically D. all the above 42. An advantage of DC motors over AC motors is that they _.A. are less expensive B. re

27、quire less maintenance C. can be started across the line D. offer a more effective means of controlling speed 43. The crankshaft deflection is at first to be _before and after repair . A. disassembled B. renewed C. measured D. regulated 44. An automated diesel engine should normally shut down due to

28、 _.A. low lube oil temperature B. high ambient air temperature C. low lube oil pressure D. high exhaust system back pressure 45. One cylinder of a diesel engine is persistently knocking and does not cease when the fuel supply to that cylinder is secured. Which of the following problems may be the ca

29、use? A. Low loading of the cylinder. B. Excessive cooling of that piston. C. Sluggish ring action on the piston. D. A mechanical defect in a working part. 46. A diesel engine is operating with excessively high exhaust temperatures at all cylinders. To correct this condition, you should first_.A. red

30、uce the engine load B. increase the cooling water flow C. increase the lube oil pressure D. adjust the fuel rack 47. Diesel engine exhaust temperatures may be used to indicate _.A. leaking exhaust valves B. an overloaded cylinder C. a clogged injector nozzle D. all of the above. 48. In a diesel engi

31、ne, excessive cylinder liner wear will cause _.I. increased blow-by II. wear between the piston ring and groove A. I only is correct B. II only is correct C. both I and II are correct D. neither I or II are correct 49. Fix the fuel injector into _after repair. A. the cylinder liner B. the cylinder c

32、over C. the cylinder jacket D. the piston 50. Lower suction pressure of a pump may be caused by _.A. too much air in the pipe line B. closed inlet valve C. empty tank D. leaky pipe 51. When starting a reciprocating pump, the discharge valve should be _.A. closed B. opened fully C. cracked open D. pa

33、rtly open 52. During repair, lubrication lines and orifices（孔） must be _.A. taken away B. engaged C. connected D. sealed off 53. If the effective bearing area has been reduced _, remedial action should be taken. A. by more than 5 percent B. by less than 10 percent C. to 95 percent D. to less than 90

34、 percent 54. When start a screw pump, the by pass valve should be _.A. closed B. opened fully C. cracked open D. partly open 55. The _is used to measure frequency. A. ammeter B. voltmeter C. wattmeter D. frequency meter 56. Tools with _handles should be used to check electric circuit. A. plastic B.

35、metal C. stainless steel D. copper 57. With UMS, when the engine room is unwatched, _will control the main engine. A. the bridge officer on watch B. the chief engineer C. the duty engineer D. the duty motorman 58. In the engine department, the _is looked upon to provide the leadership that is needed

36、. A. captain B. chief engineer C. chief officer D. chief motorman 59. Routine monitoring of a diesel engine should include _.A. checking for leaks B. checking temperatures and pressures C. listening for abnormal noises D. all of the above. 60. The stability of a vessel is normally the greatest when

37、all fuel and water tanks are full because the _.A. center of gravity is lowered B. center of buoyancy（浮心） is lowered C. reserve buoyancy is unchanged D. hull freeboard is increased 61. If a CO 2 fire extinguisher is not readily available, which of the listed fire extinguishers would be best suited t

38、o combat a small electrical fire in a switchboard? A. Dry chemical B. Halon C. Low velocity fog D. Steam 62. The conventions under which the port state control inspection is carried out include all the following except _. A. SOLAS 74 B. MARPOL 73/78 C. STCW 78/95 D. ILO NO.14763. Which fire fighting

39、 agent has the greatest capacity for absorbing heat? A. water B. dry chemical C. foam D. CO 2 64. Auxiliary machinery covers everything onboard except_. A. main engines B. main boilers C. pipes and fittings D. A and B 65. Should a person be overcome due to lack of oxygen and high concentration of re

40、frigerant, treat with _.A. fresh water B. fresh air C. salt water D. artificial respiration 66. Which of the listed classes of fire would most likely occur in the engine room of a vessel? A. Classes A and B B. Classes B and C C. Classes C and D D. Classes A and D 67. The main steering gear must be a

41、ble to steer the ship at maximum ahead service speed and be capable at this speed, and at the ships deepest service draught, of putting the rudder from 35 degrees on one side to 30 degrees on the other side within no _.A. more than 28 seconds B. more than 60 seconds C. less than 28 seconds D. less t

42、han 60 seconds 68. The maximum Blood Alcohol Concentration (BAC) rate on board shall not be more than _ by weight any time when being tested. But watch-keepers are not allowed to drink any alcoholic beverage _before their watch. A. 0.08%/ 4 hours B. 0.08%/ 2 hours C. 0.04%/ 4 hours D. 0.04%/ 2 hours

43、 二、关联题（每组关联题题干下有4个小题，每小题4个选项）第一组：Mechanical cleaningA great deal of the deposits consists of loose sludge and solid particles which can be brushed and rinsed off with water. On places where the accessibility is good, e.g. cylinder liners, mechanical cleaning of considerably harder deposits is effici

44、ent. In some cases it is advisable to combine chemical cleaning with a subsequent mechanical cleaning as the deposits may have dissolved during the chemical treatment without having come loose.Chemical cleaningNarrow water spaces (e.g. cylinder heads, coolers) can chemically be cleaned.Deposits cons

45、isting of primarily limestone can easily be removed when treated with an acid solution. On the other hand, deposits consisting of calcium sulphate（硫酸盐） and silicates(硅酸盐) may chemically hard to be removed. The treatment can, however, have a certain dissolving effect which enables the deposits to be

46、brushed off if there is access. On the market, are several suitable acid based agents. The cleaning agents should contain additives (inhibitors) to prevent corrosion of the metal surfaces. Always follow the manufacturers instructions to obtain the best result. After treatment, rinse carefully to rem

47、ove any residuals from the cleaning agent. Brush the surfaces, if possible. Rinse again with water and further with a sodium solution of 5% to neutralize possible acid residuals.69. If we can have access to some places conveniently, _. A. the harder deposits can be removed easily by mechanical clean

48、ing B. the harder deposits can not be removed easily by mechanical cleaning C. the solid particles can be removed easily by chemical cleaning D. the solid particles can not be removed easily by chemical cleaning 70. The deposits consisting of loose sludge can easily be removed when treated with _. A

49、. an acid solution B. a sodium solution C. brushing and rinsing D. the manufacturers instructions 71. Sometimes, to achieve optimum（最适宜的） washing effect, it is best to use _.A. mechanical cleaning method B. chemical cleaning method C. mechanical cleaning method first and then chemical cleaning method D. chemical cleaning method first and then mechanical cleaning method 72. From the last paragraph we know that _.A. the chemical compound for cleaning water spaces is a sodium solution B. the cleaning agent is a limestone C. the chemical agents may corrode the metal su