轮机三管轮考证英语44期试题加答案.doc

中华人民共和国海事局2006年第3期海船船员适任证书全国统考试题(总第41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。1、 单项选择题1. The diesel engine is similar to the gasoline engine in that _.A. Both of them are ignited by compressed airB. Both of them are the forms of external combustion enginesC. Both of them have spark plugsD. The power is developed by the piston in the cylinder2. The ratio of th brake horsepower to the indicated by the _.A. Thermal efficiency B. Mechanical efficiency C. Brake thermal efficiency D. Volumetric efficiency3. The ignition quality, of diesel fuel oil is indicated by the _.A. Specific gravity B. Cetane number C. Viscosity D. Calorific value4. How are the pressure and temperature affected in a diesel engine cylinder during compression?A. Pressure and temperature decreaseB. Pressure and temperature increase C. Pressure decreases and temperature increasesD. Pressure increases and temperature decreases5. An aluminium piston has lower inertia and higher coefficient of _compared to that of cast ironA. Viscosity B. Twisting moments C. Inertia D. Thermal expansion6. Each cylinder is closed at the top by a _,made of a special heat-resistant steel.A. Cylinder liner B. Coupling flange C. Cylinder cover D. Piston7. The amount of fuel delivered by a helical plunger type fuel injection pump is controlled by_.A. Rotation of the pump plunger B. Rotation of the pump barrel C. Varying the pump supply pressure D. Varying the pump return pressure8. 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. Cylinder9. Sacrificial zinc anodes are used on he saltwater side of diesel engine heat exchangers to_.A. Reduce electrolytic action on heat exchanger metalsB. Keep heat transfer surfaces shiny and cleanC. Prevent rapid accumulation of marine growthD. Provide a protective coating on heat exchanger surfaces10. In a turbocharger, inlet air velocity is in creased in the _.A. Inlet nozzle ring B. Stationary diffuser passages C. Compressor outlet volute D. Rotating impeller vanes11. Diesel engine cylinder air start valve timing is controlled by _.A. Engine operating speed B. An air manifold C. A hydraulic distributor D. The air distributor12. If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will_.A. Have a larger than normal dead bandB. Produce excessive speed response to a load changeC. Respond slowly to any change in engine loadD. Stabilize engine speed at the new governor setting13. A pyrometer is an instrument commonly used to measure_.A. Cylinder pressure B. Flame intensity C. Exhaust gas temperature D. Crankshaft axial alignment14. pump up the starting air reservoirs to their maximum pressure and _the air reservoirs and airA. Open B. close C. Drain D. Vent15. In reducing engine speed to an efficient propeller speed by the use of reduction gears,_.A. Speed and torque are both reduced B. Speed is reduced and torque remains unchangedC. Speed is reduced and torque is increasedD. Speed is sometimes unchanged while torque is increased16. Which of the following statements concerning fire-tube boilers is correct?A. Combustion gases flow through the tubes B. Flames impinge(撞击) on the tube C. Combustion occurs in the tubes D. Water flows through the tubes17. The safety valves should be tested and adjusted when the boiler survey is _.A. Completed B. Carried out C. Cleaned D. Steamed18. When an auxiliary boiler is panting and emitting black smoke, you should _.A. Increase the fuel oil supply pressure B. Decrease the fuel oil C. Decrease the fuel oil supply pressure D. Increase the air supply 19. 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 temperature C. Abnormally high boiler water temperature D. Steam demand exceeding feed pump capacity20. A vane pump belongs to_according to its working principle.A. Reciprocating pump B. Positive displacement pump C. Centrifugal pump D. centripetal pump21. The packing installed in the pump stuffing box is lubricated by_.A. Gravity and feed oil cups B. Grease cups C. Hand during installation D. Leakage through the stuffing box22. If the capacity of a centrifugal pump decreases gradually over a long period of time, you should_.A. Packing gland B. Mechanical seals C. Lantern rings D. Wearing rings23. Which of the listed conditions can lead to cavitation in a centrifugal pump?A. Vapor pockets formed in the suction flow steamB. Rough casing volute surfaces.C. Worn wearing rings D. Heavy fluid m the flow stream24. In a 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. Evaproator25. The temperature at winch water vapor in the atmosphere begins to condense is called the _.A. Dew point temperature B. Condensation temperature C. Psychometric temperature D. Absolute humidity temperature26. In an air conditioning system, moisture is removed from the air by_.A. Filters B. Separator C. Ducted traps D. Dehumidifiers27. Sludge may form in the crankcase of an air conditioning compressor as a result of _.A. Bubbling refrigerant B. Lowered operating temperaturesC. Overheating and oxidation D. Reducing the cloud or floe point28. Coalescence is the breakdown of surface tension between oil droplets in an oil/ water mixture. Which causes them to join and _in size.A. Expand B. Extract C. Increase D. Decrease29. when started, a complete oily water separating unit is first filled_.the oily water mixture is _ then pumped through the inlet pipe into the coarse separating compartment. A. With dirty water B. With clean water C. By oily water D. By mixed water30. Which is the pollution prevention equipment?A. Booster pump B. Evaporator C. Incinerator D. Cooler31. The _is used to bum oil sludgeA. Clarifier B. Oily water separator C. Incinerator D. Distiller32. In sewage treatment, the termmacerationrefers to the process of _.A. Breaking up solid matter into fine particlesB. Precipitating non-decomposed waste in a collection tankC. Chemically adjusting the sewage pH to 7.0D. Eliminating bacterium coil from the sewage33. Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?A. Carbon particles B. Lube oil C. Gasoline D. Diesel fuel34. If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the _.A. Oil has a tendency to emulsify in the bowl B. purifier will act as a clarifier at the discharge ringC. Oil will be lost through the water discharge portsD. Oil solids will be deposited only at the intermediate top disk35. The process of boiling seawater in order to separate it into freshwater vapor and brine is usually defined as _.A. Dehydration B. Condensation C. Evaporation D. Dissolution36. What type of valve is used to direct the flow of hydraulic is controlled by varying the position of the _A. Relief valve B. Direction control valve C. Stop valve D. Pressure control valve37. The delivery rate of a variable stroke axial piston hydraulic pump is controlled by varying the position of the _.A. Slide block B. Tilting box C. Pintle D. Reaction ring38. The drive motor will have a brake arranged to fail-safe,i.e.it wild the load if power fail or _machine is stopped.A. Lift B. Put C. Take D. Hold39. On tank vessels with an electrically-driven capstan, the motor should be meggered periodically to test_.A. Insulation resistance B. Eddy currents B. C. Capacitance D. Armature reactance40. Overheating of a hydraulic system may be a result of _.A. Changing pump discharge pressure in response to normal load variationsB. A high oil levelC. Incorrect fluid viscosityD. Continued slow re-circulation of the oil41. Purging air from a hydraulic system is necessary when _.A. Adding small amounts of oil to the systemB. The system has been overheatedC. The system has been drained and then filled with new oilD. The system has been idle for a long period of time42. A direct current passing through a wire coiled around a soft iron core is the description of a simple_.A. Magnetic shield B. Electromagnet C. Piezoelectric device D. Electromagnetic domain43. The operation of _two alternators requires the voltages to be equal and also in phase.A. Paralleling B. Series-mounting C. Running D. Controlling44. The power factor of an AC generator operating singularly is determined by the _.A. Connected load B. Prime mover speed B. C. Field excitation D. Generators rated voltage45. A generator is prevented from becoming motorized by the used of a/an _.A. Over-speed trip B. Reverse power relay B. C. Back pressure trip D. Governor controls46. After a ship enters service it is _for the main bus-bar to be made dead.A. Usually B. Commonly C. Exceptional D. Unavoidably47. A transformer in an electric circuit serves to_.A. Generate its own electrical powerB. Transform electrical energy into mechanical engergyC. Increase or decrease circuit voltage as requiredD. Convert AC or DC.48. The separate supplies are connected in either star or delta formation. The star formation is most commonly used and requires_slip-rings on the alternator.A. Two B. Three C. Four D. Five49. Most conducting materials such as copper, aluminium, iron,nickel,and tungsten(钨)_。A. Increase in resistance with increased temperature B. Increase in resistance with decreased temperatureC. Decrease in resistance with increased temperatureD. Contactors are made from silver and relays are made from copper.50. Which of the following statements represents the main difference between a relay and a contactor?A. Contactors control current and relays control voltageB. Relay is series connected and a contactor is parallel connectedC. Contactors can handle heavier loads than relaysD. Contactors are made from silver and relays are made from copper51. The energy consumed by an AC motor, as strictly reactive power.is_.A. Used to do mechanical work B. Used to establish the magnetic field of the motorC. Low operating temperature D. The time period since the last cleaning52. The need for insulation cleaning may be determined by _.A. Visual inspection for dirt accumulation B. High megger readingsC. Low operating temperature D. The time period since the last cleaning53. Before starting the engine, the air bottle should be _.A. Pumped up B. Loaded C. Discharged D. Closed 54. At the beginning of the watch the current operational parameters and the condition of all machinery should be verified and also the log readings should correspond with those_.A. Noted by the bridge officer B. Told by last duty engineer C. Observed D. In the instruction manual55. movement of engine no longer required means_A. stop engine B. No engine revolutions C. Stand-by engine D. Finished with engine 56. Which of the listed conditions can be considered as the stogie geratest cause of accidents?A. Speed engine B. Excessive knowledge or skill C. Human error D. Excitement57. A class C fire would occur in _.A. Bedding B. Pipe insulation C. Paint D. A generator58. If a fire occurs in the boiler room as a result of a leaking fuel line, you should FIRST_.A. Notify. The engineer on watch B. Isolate and secure the pipingC. Throw sand on the fire D. Extinguish the fire using a combination nozzle with applicator59. At the earliest indication of fire aboard your vessel, you must FIRST_.A. Locate the fire B. Determine which type of fire is burning C. Sound the alarm D. Fight the fire60. 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. Lack of oxygen D. Excess hydrogen61. If you observe any situation which presents a safety or pollution hazard during fuel transfer operations, which of the following actions should be taken FIRST?A. Close the calves at the transfer manifold B. Notify the person in charge of the shore facilityC. Stop the transfer operation D. Sound the fire alarm62. Before replacing a piston you should check the rings to see that all clearances and gaps are within the permissible_.A. Deflection B. Discrepancy C. Error D. Tolerance63. _is an opening for supplying seawater to condensers,pumps,etc.located in the hull below the waterline and having means for the attachment of the associated piping.A. Sea chest B. Scupper C. Scuttle D. Sea port64. The additional mark _in the classification certificate for machinery means propulsion apparatus is remotely control station is unmanned periodically.A. BRC B. MCC C. AUT-0 D. AUT-165. The international oil pollution prevention certificate is valid for a period of _.A. One year from the date of issue B. Five years from the date of issueC. Three years from th date of issue D. Four years from the date of issue66. Which one is the clear groundfor a more detailed inspection?A. Paint peeling off the uptake B. No operation procedures for the oil separator C. One of ships certificates required D. Damaged sanitary pump 67. The port of ships control officer may witness a fire drill carried out by the crew assigned to these duties on the _.A. Navigation log book B. Engine room log bootC. Oil record book D. Muster list68. The _convention is the first to establish basic requirements on training,certification and watch-keeping for seafarers on an international level.A. STCW78 B. STCW95 C. SOLAS74 D. SOLAS8869. When the machine spaces are in the periodic unmanned condition, _shall be immediately available and on call to attend the machine space.A. The chief engineer B. The designated engineer from shipyardC. The designated duty officer in charge of the engineering watchD. The designated survey,or from classification society70. The officer in charge of the engineering watch hall ensure that all machinery involved with the maneuvering of the ship can immediately be placed in the _of operation when notified that the ship is in congested waters.A. Manual mode B. Automatic mode C. Remote mode D. Follow-up mode71. Small oil spills on deck can be prevented from contaminating any waters by_.A. Plugging all scuppers and drains B. Placing floating booms around the ship C. Regularly emptying all drip pans D. Thoroughly draining all bunkering hoses72. When off loading garbage to another ship ,your records must identify that ship by name and _.A. Home port B. Operators name of record C. Official number D. Masters name73. The main objective of the SOLAS convention is to specify _for the construction, equipment and operation of ships, compatible their safety.A. At most references B. At least references C. Maximum standard D. Minimum standards74. The objectives of the ISM code are to ensure_.safety at sea prevention of human injury or loss of life avoidance of damage to the marine environment and to propertyA. B. C. D. 二、关联题（关联题题干下有四个小题，每个小题四个选项）The main starting valve(automatic valve) is operated by a pneumatic actuator, and similar actuator controls are fitted for slow turning and to the timing valves. The main starting valve can be locked shut and this must be done before the engine mining gear is engaged. When this valve is open, air passes through a non-return valve and flame arrester to the main manifold supplying pressure to the cylinder valves.one of which is fitted to each cylinder of the engine.The cylinder air start valves are normally held closed by a compression spring together with cylinder pressure a