海事局海船船员适任证书全国统考试卷：40805

1、中华人民共和国海事局2006年第2期海船船员适任证书全国统考试题(总第40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. _usually helps to induce air movement to assist combustion. A. Cylinder cover B. Main

2、 bearing C. The exhaust valve D. The piston movement 2. The mechanical efficiency of an engine is always less than 100% _losses occurring in the form of friction. A. because B. since C. due to D. owing 3. The exhaust ports are located around the lower part of the cylinder liner, _the products of com

3、bustion are driven by scavenging air. A. in which B. by which C. through which D. from which 4. The third engineer took the _and checked the tank table in the office and recorded all relevant data, as well as calculated the bunkering. A. water level B. sump level C. ballast tank level D. ships trim

4、5. The lubricating pipes and ducts should be blown out with _. A. the atmosphere B. the fresh water C. the compressed air D. the chemical compounds 6. _neutralizes the acid conditions and _cleanses the rings and grooves. A. The detergency/the alkalinity B. The alkalinity/the detergency C. The inhabi

5、tant/ the water D. The additives/the distilled water 7. If the engine does not start on air, it may be due to_. A. low compression of the fuel pumps B. incorrect timing of fuel pumps C. the starting air valves stuck D. air-locks in fuel oil pipeline 8. _device is provided to prevent starting air fro

6、m being admitted to the cylinder before the reversing is completed. A. An automatic B. A transmission C. A self-regulating D. An interlocking 9. A reduction in load on a diesel engine results in _of speed of the crankshaft. A. a reduction B. an increase C. an outing D. a downwards 10. Fuel injection

7、 uses the jet pump system and a Woodward type hydraulic _is used to control engine speed. A. controller B. governor C. instrument D. apparatus 11. The overspeeding of the diesel engine driving an electric generator could cause _. A. low voltage trip to trip B. reverse power trip to trip C. damage to

8、 windings D. excessive exhaust temperatures 12. Any carbon built up on surfaces must be washed away by _additives and held in suspension by a _additive. A. dispersant /detergent B. detergent/dispersant C. dispersant /dispersant D. detergent/detergent 13. While flowing through the volute in a centrif

9、ugal pump, part of the _energy of the liquid is converted to _energy. A. kinetic/pressure B. kinetic/essential C. pressure/kinetic D. pressure/height14. Gear pumps are _because they discharge a near constant amount of liquid regardless of pressure. A. negative displacement type B. turbine type C. po

10、sitive displacement type D. mixed-flow type 15. Operating a rotary pump at speeds in excess of design requirements could cause_. A. decreased clearances between rotating parts B. decreased slippage to the suction side of the pump C. air binding in the discharge ports D. erosion and excessive wear 16

11、. The fire pumps must be capable of delivering a total quantity of water at a defined head , not less than_of the total bilge pumping capacity. A. one-third B. two-thirds C. one-fourth D. two-fourths 17. The bilge system has been performing well; however, the aft starboard engine room bilge-well sud

12、denly fails to be pumped out. Which of the following should be done first to determine the cause? A. Open the bilge pump for inspection. B. Remove each of the manifold valves. C. Remove only the manifold valve to the affected bilge-well. D. Attempt to pump out another bilge well to determine if the

13、entire system is affected. 18. Which of the following statements describes one of the functions of the ballast system? A. To permit flooding of any fuel oil storage tank on any class of ship. B. To use it as a secondary service system. C. To store reserve feed or potable water for extended cruises.

14、D. To stabilize the ship by flooding certain designed tanks with seawater. 19. If an operating auxiliary boiler has a water pH reading of 7, you should _. A. bottom blow the boiler B. treat the water with caustic soda C. treat the water with chemical scavengers D. reduce the water alkalinity to reco

15、mmended readings 20. Where tanks are arranged for either oil or ballast _must be fitted in the pipeline. A. a change-over chest B. a head tank C. a emergency bilge pump D. an air cooler 21. The most common cause of scale formation in an auxiliary boiler is _. A. concentrations of calcium sulphate in

16、 the boiler water B. fuel oil in the feed water C. improper treatment of the feed water with calcium sulphate D. excessive feed water alkalinity 22. The _of the gravity disc is too big. It cause oil to flow through the water outlet. We changed the disc and no oil is found in the water outlet. A. gra

17、vity B. diameter C. circumference D. cylinder 23. Oil water separators are used to ensure that ships dont discharge oil when _bilge water. A. to pump off B. being pumped C. pumping out D. it pumping out 24. A high rate of separation between oil and water is favored by_. A. large size of oil globule

18、B. low temperature C. high viscosity D. high flow rate 25. Medium speed engines have a _power to weight ratio than the slow speed two strokes, but due to the higher speeds tend to have _maintenance intervals.A. higher/reduced B. higher/increased C. lower/reduced D. lower/increased26. Oil Record Book

19、 Part I shall be provided to every oil tanker of 150 tons gross tonnage and above and every ship of 400 tons gross tonnage and above, _oil tankers, to record relevant machinery space operations. A. as well as B. as long as C. rather than D. other than 27. It is important with all hydraulic systems t

20、o ensure that interlocking arrangements provided for pump or motor control levers are before the pump driving motor can be started. A. in the port position B. in the starboard position C. in the neutral position D. to be dismantled 28. The hand steering is a method by which the motion of the rudder

21、is controlled with_. A. a motor-driven steering wheel B. a pneumatic steering wheel C. a hand-driven steering wheel D. an electric steering wheel 29. With reference to operating a four-ram steering gear system under emergency conditions, which one of the following statements is incorrect ? A. Only o

22、ne pump should be used at any time B. The ship speed should be reduced to 70% of the normal C. Watch keeping of the steering gear should be increased D. Limitations of the steering gear should be logged but the bridge need not be informed 30. Which of the following problems can result in below norma

23、l pressure in the intercooler of an operating low pressure air compressor? A. Defective pressure pilot valve B. Defective receiver relief valve C. Leaking intake valves on the high pressure cylinder D. Leaking discharge valves on the low pressure cylinder 31. The air charge leaving an intercooler, o

24、r after-cooler of an air compressor can be expected to be _. A. superheated B. super-cooled C. at or below the dew point D. all of the above 32. Open the _of inter cooler before starting an air compressor. A. cylinder cover B. cooling water C. oil cup D. drain valve 33. Sludge may form in the crankc

25、ase of an air conditioning compressor as a result of_. A. bubbling refrigerant B. overheating and oxidation C. lowered operating temperatures D. reducing the cloud or flash point 34. If a refrigeration system were short of refrigerant, the condition would result in _. A. continuous running of the co

26、mpressor B. high suction pressure C. high discharge pressure D. short cycling of the compressor on the water failure switch 35. Which of the statements listed concerning heat transfer is correct? A. Heat is always transferred at a constant rate. B. Heat transfer rate increases as temperature differe

27、nce 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. The purpose of the low pressure cutout switch is to_. A. maintain liquid refrigerant at the suction of the compressor B. maintain a preset suction pressu

28、re to the compressor C. start and stop the compressor at preset operating pressures D. operate at minimum efficiency 37. When a refrigeration compressor is in the off cycle, the thermal expansion valve will_. A. always be wide open when the compressor restarts B. continue to operate as if the system

29、 were in operation C. remain open until evaporator pressure equalizes, then close until the compressor restarts D. always be completely closed until the compressor restarts 38. The star formation is most commonly used and requires _on the alternator. A. one slip-ring B. two sliprings C. three slipri

30、ngs D. four sliprings 39. A constant output voltage from an AC generator is maintained by the _. A. prime mover governor B. exciter generator C. voltage regulator D. reverse power relay 40. Prior to any overhaul work on electric equipment, it is important to ensure the circuits are_. A. live B. dead

31、 C. excited D. on line 41. Which of the following should be the FIRST step in removing a generator from parallel operation? A. Trip the generator off the switchboard. B. Turn off all electrical equipment. C. Remove the load from the offgoing generator. D. Increase the cycles of the generator staying

32、 on the line. 42. 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 43. In _the control action is independent on the output. A. a closed loop control system B. an o

33、pen loop control system C. a boiler control system D. a steering gear automatic control system 44. Every precaution must be taken to avoid _. A. sparking being taking place B. to spark taking place C. sparking to be taken place D. sparking taking place 45. The _is used to measure the volume of a liq

34、uid or gas through a pipeline within any given period of time. A. flowmeter B. viscometer C. micrometer D. feeler 46. A salinity indicator is used to determine the _. A. cause of salt contamination B. location of salt water contamination C. chemical makeup of feed-water D. level of alkalinity in con

35、densate 47. In order to accurately measure very low pressures, which of the instruments listed should be used? A. Compound gage B. Bourdon tube C. Manometer D. Deadweight gage 48. A circuit breaker and a fuse have a basic similarity in that they both _. A. can be reset to energize the circuit B. sho

36、uld open the circuit when overloaded C. will burn out when an over current flow develops D. all of the above 49. The main difference between a motor control circuit containing low voltage protection and low voltage release is that the latter contains_. A. a magnetic operating coil B. normally open l

37、ine contacts C. thermal-overload protection D. a momentary-contact start button 50. If the engine _for a long period, there will be a danger of frost. A. must stand inoperative B. has to stand inoperative C. must be stood idle D. will stand idle 51. If fuel injection to a four-stroke/cycle diesel en

38、gine begins earlier than designed, ignition may be delayed because the _. A. cylinder compression pressure may not be high enough B. cylinder compression temperature may be too high C. fuel oil injection pressure may not be high enough D. scavenge and purge process is incomplete 52. Improper cooling

39、 of a diesel engine cylinder liner due to the accumulation of scale deposits, may cause_. A. low compression pressure B. increased piston wear C. increased cylinder lube oil consumption D. poor contact between compression rings and liner 53. Poor combustion in a diesel engine can be caused by_. A. h

40、igh compression pressure B. low intake air temperature C. low exhaust pressure D. high scavenge air temperature 54. High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by _. A. engine overload B. low combustion temperature C. plugged fuel nozzle holes D.

41、 excessive compression pressure 55. In a diesel engine, 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 56. Combustion knock can occur i

42、n the cylinders of a diesel engine under any condition permitting _. A. a shortened ignition delay period B. a lean fuel/air mixture C. excess fuel in the combustion chamber D. rapid vaporization of injected fuel droplets 57. The load on the crosshead pin is always_, so it is the _half of the bearin

43、g which is subject to wear.A. upwards/top B. upwards/bottom C. downwards/top D. downwards/bottom58. If the action of the engine indicates that some of the cylinders are not firing, the ones affected may be determined by watching _.A. the bad smoke B. the smoky exhaust C. the exhaust temperature D. t

44、he peak pressure 59. A centrifugal pump cant supply water after starting. You should firstly check _. A. discharge valve B. power supply C. packing gland D. bearing lubrication 60. Which of the motors for the devices listed below is fitted with an instantaneous(瞬时的) overload relay? A. Fan B. Pump C.

45、 Winch D. Machine tool 61. If _are taken at regular intervals, any unequal distribution of load will be easily found out.A. indicator diagrams B. nomo-gram C. temperature readings D. pressure readings62. Oil mist detectors are usually used on board to detect oil mist density within _. A. the engine

46、crankcase B. the engine scavenge boxes C. drain tanks D. fuel tanks 63. The resistance of electric wire will decrease as its _. A. length increases B. cross-sectional area increases C. temperature increases D. percent of metallic purities increases 64. It is well known that the whole power distribut

47、ion of the ships electrical services mainly depend on the_. A. sub-boards B. main switchboards C. emergency switchboards D. distribution boards 65. The Company should ensure that _documents are promptly removed. A. absolute B. updated C. outdated D. new 66. You may improve a vessels stability by _.A

48、. keeping the fuel tanks topped off B. increasing the free surface effect C. keeping the fuel tanks at least half full D. keeping at least one fuel tank empty for slops 67. The most common type of containment device for spilled oil on the water is the use of _. A. straw B. booms C. skimmers D. chemi

49、cal dispersants 68. Weve tried many ways, but all in vain. Only in this way, _the problem, Im sure. A. can we solve B. we can solve C. we will solve D. can be solved 69. It was _midnight that we removed the trouble and went back to our cabins. A. until B. not until C. not before D. not after 70. The

50、 flash point of a petroleum product is an indication of its_. A. viscosity B. pour point C. volatility D. lower explosive limit 71. If there has been a fire in a closed unventilated compartment it may be unsafe to enter because of _. A. unburned carbon particles B. excess nitrogen C. a lack of oxyge

51、n D. excess hydrogen 72. Tell your men _the rules and procedures of working when dismantling the equipment. A. not to go against B. dont go against C. not go to against D. to not go against 73. The minimum number and capacity of bilge pumps and fire pumps and their distributing within the ship is go

52、verned by_. A. Classification Society Rules B. National requirements C. The IMO International Convention for the Safety of Life at Sea D. All of the above. 74. The SOLAS Convention in its successive forms is generally regarded as the most important of all international treaties concerning the _of merchant ships. A. pollution B. economization C. safety D. efficiency 二. 关联题（关联题题干下有4个小题，每小题4个选项） The windlass is the usual anchor-handling device where one machine may be used to handle both anchors. A more recent development, particular on larger