第38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2005年第3期海船船员适任证书全国统考试题(总第38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74题，每题1分，第75题至78题，每题1.5分,第79题至80题, 每题10分。一、单项选择题：1. Bedplates are the _of the engine, without the support of which the shaft alignment i

2、nparticular, and engine structure as a whole, would inevitably be lost. A. hull B. projection C. graphitication D. foundation2. Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?A. Exhaust and scavenging. B. Scavenging and compression. C. Ignition and expansion

3、. D. Exhaust and compression. 3. Which of the following may lead to the engine NOT to start on air?A. starting air pressure too high. B. correct timing of starting air valves. C. three of the six starting valves stuck. D. the turning gear disengaged.4. The lowest temperature required to cause self-s

4、ustained combustion of a substance independentof any outside source of ignition is called _.A. explosive range B. flash point C. ignition temperature D. combustion temperature5. The function of a lubricating oil is _to lubricate the running surface _to carry away agreat deal of heat.A. not/but B. ne

5、ither/nor C. either/or D. not only/but also6. The degree to which the viscosity of an oil will change with a change in temperature is indicatedby the _.A. weight designation B. viscosity index C. pour point D. thermal change value7. All three systems have the ports_to swirl the incoming air and dire

6、ct it in the appropriate path.A. angled B. rounded C. being angled D. being rounded8. Scavenging in a four-stroke/cycle diesel engine occurs during the _.A. last part of the exhaust stroke, and the first part of the intake stroke B. last part of the intake stroke only C. early part of the injection

7、stroke only D. early part of the power stroke9. _in what position the engine stops there will always be at least one of the cylinders with itsstarting air valve open to admit compressed air to start the engine. A. Because B. Owing to C. For D. No matter10. The process to remove exhaust gases by blow

8、ing in fresh air is called _.A. charging B. supercharging C. starting D. scavenging11. Some vessels are equipped with a water lubricated stern tube. When at sea, operating undernormal conditions, the water service valve from the ship's saltwater system to the bearing should be _.A. closed, and n

9、o leakage permitted across the shaft packingB. closed, and only slight leakage permitted across the shaft packing12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.25. 26. 27.C. opened, and no leakage permitted across the shaft packingD. opened, and only slight leakage permitted across the shaft pac

10、kingThe required amount in the change of speed necessary before a governor will make a corrective movement is known as _.A. speed droop B. sensitivity C. stability D. promptness The pressure head of a water pump is given in the unit of _.A. kg B. MPa C. mH 2 O D. none of the aboveThe pump discharge

11、pressure will be considerably higher than the pressure at the _. A. pump entry branch B. outlet pipe C. impeller D. None of the above is true. A feed pump for an auxiliary boiler might lose suction if the _. A. boiler water level is low B. feedwater is too hot C. boiler steam demand is low D. feedwa

12、ter is too coldTo operate a centrifugal fire pump at reduced capacity, you should _. A. readjust the relief valve B. throttle the suction line C. throttle the discharge valve D. open the priming line_the moveable plate and floating ring inside the pump is very difficult. A. Having adjusted B. Being

13、adjusted C. To adjust D. AdjustedStrainers, sometimes called_, are devices designed to prevent the passage of unwanted solids into or further along a system.A. dampers B. filters C. stopper circuits D. separators A donkey boiler is _.A. one to supply steam to the main propulsion turbine B. an auxili

14、ary boiler C. A and B D. neither A nor B Which of the following statements concerning fire-tube boilers is correct?A. Combustion gases flow through the tubes. B. Flames impinge on the tubes. C. Combustion occurs in the tubes. D. Water flows through the tubes. Prior to lighting off a cold automatical

15、ly fired auxiliary boiler, you should _. A. check and regulate the water level B. close the air cock once fires are litC. blowdown the gage glass D. crack the steam stop to assure protective steam flow The _is not a(n) component of an oil separator.A. sliding bowl bottom B. gravity disc C. separatin

16、g disc D. scum valveA magnetic strainer is used in the diesel engine reduction gear oil system to remove small particles of _.A. water B. babbitt C. iron or steel D. acidsIn a complete oil/water separator, more oil will separate out onto the underside of these plates and travel outwards until it is

17、free to rise into the oil collecting space. Whats the meaning of “it” in the sentence above?A. a separator B. oil C. water D. an oil collecting space The oil sludge is burnt in the _onboard. Ill show you the ashes. A. boiler B. main engine C. auxiliary engine D. incinerator A burning AC motor would

18、be considered what class of fire?A. Class A' B. Class B' C. Class C' D. Class D'In which of the listed hydraulic systems will the installation of an oil cooler be necessary? A. Constant tension mooring winch system B. Hatch cover system C. Watertight door systemD. Internal combustion

19、 engine hydraulic starter system中国海事服务中心 试卷28842468.doc 第1页，共4页28. No specific period is given for the renewal of the lubricating oil filter element as this should bedone _a figure of 0.7 bars is shown on the gauge.A. whatever B. whenever C. wherever D. whoever 29. If a hydraulic pump is overheating

20、, the cause may be _.A. excessive internal leakage in the pump B. low discharge pressure and fluid flow C. excessive fluid level in the hydraulic reservoir D. operation of the pump at 100% efficiency 30. Compressed air is used on board ship _.A. for starting diesel engines B. in pneumatic control sy

21、stem C. in pneumatic tools D. All the above are true.31. In which of the areas listed would you expect to find the highest salt concentration in a flashevaporator?A. Distiller air ejector cooling medium B. Saltwater heater discharge C. First-stage internal feed box D. Second-stage internal feed box

22、32. Supply the _before starting an air compressor.A. fuel oil B. cooling water C. steam D. power33. Sludge may form in the crankcase of an air conditioning compressor as a result of _.A. bubbling refrigerant B. overheating and oxidationC. lowered operating temperatures D. reducing the cloud or flash

23、 point34. Ammonia when used as a refrigerant is valuable because of its high efficiency, it is however _.A. toxic B. flammable C. explosive D. all of the above 35. Which of the statements listed concerning heat transfer is correct?A. Heat is always transferred at a constant rate.B. Heat transfer rat

24、e increases as temperature difference increases. C. The rate of heat transfer is not affected by temperature difference. D. The high temperature region is known as a heat sink.36. If a refrigeration compressor will not start, the reason may be _.A. the pressure regulating valve is not closing B. an

25、excessive lack of refrigerant in the system C. badly leaking discharge valves D. worn piston rings37. In a refrigeration system, if the cooling water to the condenser fails, the _.A. box temperature solenoid valve will close B. expansion valve will close C. compressor will shutdown D. king valve wil

26、l open38. The power factor of an AC generator operating singularly is determined by the _.A. connected load B. prime mover speed C. field excitation D. generator's rated voltage 39. A constant output voltage from an AC generator is maintained by the _.A. prime mover governor B. exciter generator

27、 C. voltage regulator D. reverse power relay 40. In order to change the direction of rotation of a D.C. motor _.I. the field leads must be changed ; . the input leads must be changed A. I only B. only C. either I or D. neither I or 41. Which of the following should be the FIRST step in removing a ge

28、nerator from parallel operation?A. Trip the generator off the switchboard. B. Turn off all electrical equipment.C. Remove the load from the 'off going' generator.D. Increase the cycles of the generator staying on the line.42. The purpose of a main switchboard circuit breaker's reverse-po

29、wer trip is to _.A. prevent main circuit overload B. protect the circuit breaker blowout coil C. prevent alternator motorization D. prevent low voltage tripout43. In _the control action is independent on the output.A. a closed loop control system B. an open loop control system C. a boiler control sy

30、stem D. a steering gear control system44. Which of the following marine examples belongs to the open loop control system?A. accommodation heating system B. steering gear C. boiler control D. cargo control45. The viscosity regulator controls the fuel oil temperature _provide oil at the correct viscos

31、ityfor combustion.A. in order that B. because of C. in order to D. owing to 46. A transformer in an electric circuit serves to _.A. generate its own electrical powerB. transform electrical energy into mechanical energy C. increase or decrease circuit voltage as required D. convert AC current to DC c

32、urrent47. The liquid flowing in the capillary(毛细管) is such that the difference in _readings takenbefore the capillary and after it is related to the oil viscosity.A. pressure B. velocity C. flow rate D. temperature48. Domestic water pump is started automatically by _which operates as the water level

33、 falls toa predetermined level.A. a level controller B. a temperature switch C. a floating ball D. a pressure switch 49. The additional mark _in the Classification Certificate for Machinery means propulsionapparatus is remotely controlled on the navigating bridge control station, and engine assembly

34、 control station is unmanned periodically.A. BRC B. MCC C. AUT-0 D. AUT-1 50. Low compression of diesel engine may result from _.A. a worn cylinder B. broken piston rings C. any of A and B D. none of the above 51. White smoke exhausting from an operating diesel engine may indicate _.A. a cracked lin

35、er B. burning lube oil C. an overloaded engine D. insufficient combustion air 52. Defective timing gear in a diesel engine may lead to:A. smoky exhaust B. starting failure C. overload D. over speed 53. Poor combustion in a diesel engine can be caused by _.A. high compression pressure B. low intake a

36、ir temperature C. low exhaust pressure D. high scavenge air temperature 54. An automated diesel engine should normally shut down due to _.A. low lube oil temperature B. high ambient air temperatureC. low lube oil pressure D. high exhaust system back pressure55. To successfully reduce an excessively

37、high diesel engine exhaust gas temperature, you should_.A. reduce the engine driven fuel pump outlet pressure B. retard the fuel injector timing to reduce power C. increase the fuel rack setting D. reduce the load on the engine56. _, the engine must be stopped immediately.A. Should knocking occur B.

38、 If knocking occur C. Should if knocking occurs D. If occur knocking 57. 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中国海事服务中心 试卷28842468.doc 第2页，共4页58. Each journal and pin should be examined for _and grooving.

39、A. bridges B. recesses C. rears D. ridging 59. A built-up exhaust valve is one in which _.A. the stem and heads are made of different material B. low-alloy steel is used throughoutC. a replaceable valve disk is welded to the headD. the self-centering action comes from motion of the valve stem in the

40、 guide60. Combustion knock can occur in the cylinders of a diesel engine under any condition permitting_.A. a shortened ignition delay period B. a lean fuel/air mixtureC. excess fuel in the combustion chamber D. rapid vaporization of injected fuel droplets 61. The bearing cap and shell are replaced

41、and tightened up until _.A. the “ nip ”is zero B. the “ nap ” is zeroC. the “ gap ”is correct D. the “ clearance ” is correct 62. The resistance of electric wire will decrease as its _.A. length increases B. cross-sectional area increasesC. temperature increases D. percent of metallic purities incre

42、ases63. Oil mist detectors are usually used on board to detect oil mist density within _.A. the engine crankcase B. the engine scavenge boxes C. drain tanks D. fuel tanks 64. Tools with _handles should be used to check electric circuit.A. plastic B. metal C. stainless steel D. copper65. The crankcas

43、e cover should not be opened until at least _minutes after the engine stops.A. 10 B. 15 C. 20 D. 3066. “Movement of engine no longer required.” means “_”.A. Stop Engine B. No Engine Revolution C. Stand-by Engine D. Finished With Engine 67. Under the provisions of applicable international conventions

44、, ships entitled to fly the flag of aParty are subject, while in the port of a Party, to control by officers duly authorized by the Party. Ships of non-parties or below convention size shall be given _. A. more favorable treatment B. less favorable treatment C. no more favorable treatment D. the mos

45、t favorable treatment68. The conventions under which the port state control inspection is carried out include all thefollowing except _.A. SOLAS 74 B. MARPOL 73/78 C. STCW 78/95 D. ISM Code69. If you burned your arm on a bare steam line, the most effective immediate treatment would beto_.A. wrap the

46、 arm in a tight bandage B. soak the arm in hot salt water C. cover the burn with petroleum jelly D. put the burn in cold water70. If liquid refrigerant accidentally comes in contact with the eyes, _immediately.A. rub the eyes B. irritate the eyes C. wash the eyes with a heavy boric acid solution D.

47、obtain medical help71. Diesel fuel is relatively safe to handle due to its low volatility（挥发）, but the fumes will self-ignite and continue to burn steadily if the fuel is heated to the _.A. flash point B. auto-ignition point C. volatility point D. upper explosive limit72. Duty officer informs us tha

48、t the vessel is out of harbor and in “Full Ahead”.We are going torun _.A. diesel oil instead of fuel oil B. fuel oil instead of diesel oil C. diesel oil instead fuel oil D. fuel oil instead diesel oil73. A(An) _should be issued for every company complying with the requirement of the ISMCode by the A

49、dministration.A. ISM B. DOC C. SMC D. PSC74. The term “moderate speed” was previously interpreted as meaning a speed which wouldenable a vessel _within half the range of visibility.A. stopping B. being stopped C. to stop D. to be stopped二、关联题（每组关联题题干下有4个小题，每小题4个选项）Each of the engine cylinders is pro

50、vided with a Bosch, type PF, fuel pump. The fuel pump is a single-acting plunger pump with non-adjustable stroke. The plunger is so accurately ground and lapped that its clearance inside the barrel is only 0.002-0.003 mm. This provides sufficienttightness between plunger and barrel, even at pressure

51、s as high as 200-400 bar, without the need for sealing materials. Neither the plunger nor the barrel can therefore be renewed individually. The plunger pressure stroke is produced by a cam on the engine camshaft, whereas the return stroke, the suction stroke is effected by means of a strong coil spr

52、ing. The top of the pump barrel is closed by a spring-loaded pressure valve, to which the fuel oil pipe for the respective fuel valve on the relevant engine cylinder is connected.Regulation of the amount of fuel delivered by the fuel pump is achieved by turning the pump plunger, the cylindrical surface of