1、中国海事服务中心 试卷 30806 第 1 页 共 4 页中华人民共和国海事局2003 年第 1 期海船船员适任证书全国统考试题 (总第 30 期) 科目：轮机英语 试卷代号：806适用对象：近洋航区 750-3000KW 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 A charge of fresh ai
2、r is drawn into the engine cylinder and then _ by the moving piston _very high pressure. A. pressed /to B. pressurized /with C. pushed /in D. compressed /to 2. What function is provided by the crankcase ventilation system on some diesel engines? A. Increases the sludge forming tendency of lube oil.
3、B. Prevents the accumulation of combustible gases. C. Improves lube oil cooling. D. Improves cold weather starting. 3. If your vessel burns 8 tons of fuel per day at 15 knots, how many tons per day will it burn at 18 knots? A. 13.82 tons B. 15.61 tons C. 16.00 tons D. 16.37 tons 4. The joint face be
4、tween the cylinder cover and the liner is arranged _ the combustion process as possible. A. such far away from B. such near by C. as far away from D. as near by 5. Some vessels are equipped with a water lubricated stern tube. When at sea, operating under normal conditions, the water service valve fr
5、om the ships saltwater system to the bearing should be _. A. closed, and no leakage permitted across the shaft packing B. closed, and only slight leakage permitted across the shaft packing C. opened, and no leakage permitted across the shaft packing D. opened, and only slight leakage permitted acros
6、s the shaft packing 6. A: Please tell me the specifications and quantity. B: _. A. Pump diesel oil first B. 300 tons of 180 cst fuel oil C. The figure is all right D. OK, Ill sign it 7. In some designs the cylinder oil is timed so that the oil injects only on the _. A. piston crown B. piston groove
7、C. piston skirt D. piston ring belt 8. 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 9. Propeller pitch speed minus ship speed divided by the
8、 propeller pitch speed is termed _. A. apparent slip B. true slip C. pitch D. propulsive efficiency 10. After the order _ is given, the air system is shut down, the turning gear put in. A. Finished With Engine B. Stop The Engine C. Stand-by Engine D. Slow-down Engine 11. By which of the following me
9、ans is force efficiently provided to vary the pitch of the blades on a modern controllable pitch propeller? A. Hydraulic B. Mechanical C. Pneumatic D. Electrical 12. The diffuser prevents pressure pulses from one cylinder _ another during operation. A. to interfere with B. interfering with C. to hel
10、p scavenging D. helping scavenging 13. The difference between a supercharged engine and an un-supercharged engine is that _ operates at an increased pressure. A. the later B. the latter C. the former D. the farmer 14. Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfu
11、lly pressure charged during normal operation, by using the _. A. exhaust gas temperature system B. exhaust load system C. constant or pulse pressure system D. constant volume system 15. In general, _ is suitable for delivering samll quantities at high pressure. A. reciprocating pump B. gear pump C.
12、centrifugal pump D. vane pump 16. The pumps employed on board ship can be divided into two main categories, i.e. _pumps and centrifugal pumps. A. gear B. non-positive displacement C. positive displacement D. rotary 17. If the capacity of a centrifugal pump decreases gradually over a long period of t
13、ime, you should replace the _. A. packing gland B. mechanical seals C. lantern rings D. wearing rings 18. _ is used for washing and drinking. A. The ballast system B. The salt water system C. The bilge system D. The domestic system 19. The bilge system has been performing well; however, the aft star
14、board engine room bilge-well suddenly 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
15、 bilge well to determine if the entire system is affected. 20. Every liquid has a pressure at which it will vaporize and this pressure varies with temperature. The word “ which” means _. A. a liquid B. a pressure C. a temperature D. None of the above. 21. Before an auxiliary boiler is shutdown for a
16、n extended period of time, the water in the boiler should have a pH value of _. A. 10 B. 7 C. 4 D. 1 22. The amount of heat released by steam when it changes to water at the same temperature is called _. A. latent heat of condensation B. latent heat of vaporization C. latent heat of saturation D. se
17、nsible heat of condensation 23. After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the _. A. furnace to be re-purged B. electric charge to buildup in the igniter C. fuel pump to rest
18、art D. drum level to stabilize 中国海事服务中心 试卷 30806 第 2 页 共 4 页24. For a purifier changing to a gravity disc with smaller hole diameter will move the interface towards the _.A. bowl periphery B. bowl center C. upper surface D. lower surface25. The principle of separation by which all commercially avail
19、able oily water separators function is_ differential between oil and water. A. the temperature B. the viscosity C. the gravity D. the size 26. Which of the following factors will have the greatest effect on the heating load within a conditioned space? A. Solar gain B. Infiltration and ventilation ai
20、r C. Occupants inside the space D. Entertainment equipment within the space 27. Burning diesel oil should be treated as which class of fire? A. Class A B. Class B C. Class C D. Class D 28. Cargo handling unit is rated according to the _ to be lifted. A. cargo crane B. jib C. safe working load D. oil
21、 pressure 29. These include deck machinery such as mooring equipment, anchor handling equipment, cranes and _. A. boilers B. bow thrusters C. stabilizers D. hatch covers 30. The size of ball and roller bearings can be identified by the _. A. rolling member size B. inner race cone width C. manufactur
22、ers numerical code D. outer ring width 31. Brine density in a distilling plant is measured with a/an _. A. psychrometer B. salinometer C. anemometer D. sphygmomanometer 32. If an electric motor driven air compressor fails to start, it may be due to a _. A. leaking discharge valve B. jammed suction v
23、alve C. tripped overload relay D. broken discharge un-loader 33. 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. 34. Which of the following will be desirable properties of refrigerant? I. non-explosive;
24、II. non-corrosive; III. that it doesnt react with lubricants A. I,II and III B. I and II C. I and III D. II and III 35. The cooler as the liquid becomes, _. A. the faster it will evaporate B. the slower it will condense C. the slower it will evaporate D. the faster it will flow 36. While troubleshoo
25、ting a refrigeration system for low head pressure, liquid refrigerant flooding back from the evaporator is determined to be the cause. It may be necessary to _. A. change the expansion valve adjustment B. readjust the water regulating valve to increase the flow of water C. purge air from the condens
26、er D. clean the waterside of the condenser 37. The output voltage of a three-phase alternator is regulated by the _. A. AC voltage to the armature B. AC voltage to the field C. DC voltage to the armature D. DC voltage to the field 38. The switchboards for a .c. systems differ from the d.c. switch ge
27、ar in that the open type panels are generally _ and the dead-front switch gear is the common rule. A. permissibly B. permissible C. no permissible D. not permissible 39. Any electric motor can be constructed to be _. A. short proof B. ground proof C. explosion proof D. overload proof 40. Generators
28、should have an excitation/voltage regulation system which will enable them to share the steady state reactive load _ no machine exceeds its proportional share of reactive load by more than 10% of the rated reactive load of the largest generator. A. when B. so as C. such that D. though 41. Temperatur
29、e control valves installed in the jacket cooling water system of a diesel engine, modulates the rate of water flow through the _. A. cooling water pump B. nozzle cooling passages C. cylinder jackets D. heat exchanger 42. This arrangement is _ if the elements are directly connected to one another and
30、 the control action takes place without human involvement. A. a manual closed loop B. a manual opened loop C. an automatic closed loop D. an automatic opened loop 43. The viscosity regulator controls the fuel oil temperature _ provide oil at the correct viscosity for combustion. A. in order that B.
31、because of C. in order to D. owing to 44. Most conducting materials such as copper, aluminum, iron, nickel, and tungsten _. A. increase in resistance with increased temperature B. increase in resistance with decreased temperature C. decrease in resistance with increased temperature D. increase in co
32、nductance with increased temperature 45. UMS stands for _ . A. ultra much space B. universal medium system C. unit machined space D. unattended machinery space 46. As a general rule, the first troubleshooting action to be taken in checking faulty electric control devices is to _. A. draw a one line
33、diagram of the circuitry B. test all fuses and measure the line voltage C. take megger readings D. insulate the apparatus from ground 47. To repair a small electrical motor that has been submerged in saltwater, you should _. A. wash it with fresh water and apply an external source of heat B. renew t
34、he windings C. send it ashore to an approved service facility D. rinse all electrical parts with a carbon tetrachloride cleaning solvent and then blow dry the motor with compressed air 48. Shims of different thicknesses are inserted between the shells to enable adjustment of _.A. the bearing clearan
35、ces B. the bearing thickness C. the bearing strength D. the bridge hardness49. _ is a precaution which contributes to avoiding trouble under normal operating conditions. A. Constant inspection B. Keeping constant load C. Remaining constant temperature D. Varying speed 50. If the jacket water tempera
36、ture of an operating diesel engine suddenly rises above normal, the cause can be attributed to _. 中国海事服务中心 试卷 30806 第 3 页 共 4 页A. an overfilled expansion tank B. excess chromate treatment of the jacket water C. a clogged raw water sea suction D. cavitation erosion of the heat exchanger tubes 51. The
37、 bearing cap and shell are replaced and tightened up until _. A. the “nip ”is zero B. the“ nap”is zero C. the“gap”is correct D. the “clearance” is correct 52. White smoke exhausting from an operating diesel engine may indicate _. A. a cracked liner B. burning lube oil C. an overloaded engine D. insu
38、fficient combustion air53. 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 mixture C. excess fuel in the combustion chamber D. rapid vaporization of injected fuel droplets 54. Each journal and pi
39、n should be examined for _ and grooving. A. bridges B. recesses C. rears D. ridging 55. _, the engine must be stopped immediately. A. Should knocking occur B. If knocking occur C. Should if knocking occurs D. If occur knocking 56. Poor combustion in a diesel engine can be caused by_. A. high compres
40、sion pressure B. low intake air temperature C. low exhaust pressure D. high scavenge air temperature57. Which of the motors for the devices listed below is fitted with an instantaneous overload relay? A. Fan B. Pump C. Winch D. Machine tool58. The unit of electrical power is the _. A. ampere B. kilo
41、volt C. watt D. farad59. During repair, lubrication lines and orifices must be _. A. taken away B. engaged C. connected D. sealed off 60. It is well known that the whole power distribution of the ships electrical services mainly depend on the _. A. sub-boards B. main switchboards C. emergency switch
42、boards D. distribution boards 61. Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will _. A. reduce engine horsepower output B. aid in silencing the exhaust noise C. increase the mean effective pressure D. contribute to effective cylinder scavenging 62. In a diesel eng
43、ine, 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 63. When under maneouvring conditions with the machinery being manually operated th
44、e control unit or console should be _. A. automatically controlled B. continuously manned C. off power D. None of the above is true. 64. In the engine department, the _ is looked upon to provide the leadership that is needed. A. captain B. chief engineer C. chief officer D. chief motorman 65. Upon t
45、he completion of required tests, a _ should be placed on each extinguisher, showing the date and the person who completed the tests. A. cap B. disc C. tag D. cover 66. If the buoyant force on a ships hull is equal to or greater than the displacement tonnage, the ship will _. A. require ballast added
46、 to only the port side tanks B. be down by the head C. sink D. float 67. A fire involving trash and paper waste would be classified as a _. A. class A B. class B C. class C D. class D 68. The order“Bow thrust stop.”means“_”. A. Bow thrust full to port B. Bow thrust full to starboard C. No bow thrust revolutions D. No stern thrust revolutions 69. The auxiliary steeri
