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中华人民共和国海事局

2007年第2期海船船员适任证书全国统考试题(总第43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. ______ the engines, the diesel engine is ______ used engine on board.

A. Between/more commonly B. Among/the most commonly C. Between/not more commonly D. Among/ not the most commonly

2. The average pressure exerted on a piston during each power stroke is termed ______.

A. indicated horsepower B. mean effective pressure C. exhaust back pressure D. compression pressure 3. The cetane number rates fuels for diesel engines according to its ______.

A. antiknock characteristics B. ignition qualities C. rates of vaporization D. viscosity

4. The time between injection and ignition of the fuel is known as ______.

A. turbulence lag B. after burning ratio C. pre-ignition lag D. ignition delay 5. ______ controls the fuel oil temperature in order to provide oil at the correct viscosity for

combustion.

A. The viscosity regulator B. The temperature controller C. The flow meter D. The pressure switch

6. Constant cooling the various components of diesel engine has a number of functions except for

______.

A. good lubrication B. low thermal stress C. good mechanical properties D. acid corrosion

7. A device which functions to bring a diesel engine to a full stop to protect it from damage is

known as a/an ______.

A. torque limiter B. over-speed trip C. over-speed governor D. load limit governor 8. Engine speeds at which resonance can occur are termed ______.

A. maximum speeds B. full speeds C. sea speeds D. critical speeds

9. Prolonged operation of a diesel engine with a closed cooling water system at lower than normal

designed operating temperatures can ______.

A. increase power output B. decrease lube oil viscosity C. eliminate fuel knock D. cause sulfuric acid formation 10. ______ on a ship transmits power from the engine to the propeller.

A. The automatic control system B. The speed regularly system

C. The transmission system D. The compression air system

11. In a _____ boiler the hot gases from the furnace pass through the tubes while the water is on the

outside.

A. water-tube B. fire-tube C. exhaust gas D. composite

12. The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the

boiler ______.

A.salinity is abnormally B.high steam demand is too high

C.feed-water flow is low D.water level is abnormally low

13. The water in a steaming auxiliary boiler should be tested daily for ______.

A. dissolved oxygen B. chlorides C. sludge D. dissolved nitrogen 14. Ignition failure in an automatically controlled auxiliary boiler could be caused by ______.

A. carbon deposits on the flame scanner B. high fuel oil temperature C. low fuel oil viscosity D. high steam pressure

15. The concentration of total dissolved solids in the water of an auxiliary boiler can increase as a

result of ______.

A. seawater contamination B. frequent surface blows C. dissolved oxygen de-aeration D. frequent bottom blows

16. Some pumps use packing as sealing gland. The gland should be ______.

A. slack enough to allow slight leakage of fluid B. slightly chocked

C. brought up tight so as not to allow any leakage D. fitted with a relief valve

17. A spur gear pump should be operated with the discharge valves ______.

A. slightly opened B. throttled C. fully opened D. halfway opened 18. Compared to globe and angle valves, gate valves ______.

A. are more suitable for throttling

B. operate with little or no pressure drop when fully opened C. are more easily repaired

D. cannot be used for service requiring infrequent operation 19. An increase in rotor clearances in a rotary pump will ______.

A. increase discharge pressure B. decrease pump capacity

C. decrease pump cavitation D. decrease reaction ring clearance

20. The usual symptoms of cavitation in a centrifugal pump is ______.

A. noise and vibration B. an increase in discharge pressure C. an increase in suction pressure D. lifting of the relief valve

21. Refrigerant entering the compressor of a refrigeration system should be in which of the following

conditions?

A. Sub-cooled liquid B. Sub-cooled vapor C. Superheated vapor D. Liquid

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22. ______is the circulation and refreshing of the air in a space without necessarily a change of

temperature.

A. Refrigeration B. Air conditioning C. Ventilation D. 35. Heating

23. In an air conditioning system, moisture is removed from the air by ______.

A. filters B. separators C. ducted traps D. dehumidifiers 36. 24. Sludge may be formed in the oil in the crankcase of a reciprocating air conditioning compressor

as a result of ______.

A. refrigerant bubbles in the lube oil 37. B. refrigerant reducing the lube oil viscosity C. oxidation of the lube oil from overheating D. reducing the floc or cloud point of the oil

25. A high rate of separation between oil and water is favored by ______.

A. large size of oil globule 38. B. low temperature

C. high viscosity 39. D. high flow rate

26. When started, a complete oily water separating unit is first filled ______. The oily water mixture 40.

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 water 27. Which is the pollution prevention equipment?

A. booster pump B. evaporator C. incinerator D. cooler 28. The ____is used to burn oil sludge. 41.

A. clarifier B. oily water separator C. incinerator D. distiller 29. Oil water separators are used to ensure that ships don't discharge oil when pumping out _____.

A. ballast water B. boiler water C. bilge water D. sewage water 42. 30. When a clarifier is running the impurities and water collect at the bowl ______.

A. center B. periphery C. inlet D. upper parts

31. The separation of impurities and water from ______ is essential for good combustion of diesel

engines.

A. lube oil B. fuel oil C. turbine oil 43. D. grease

32. Brine density in a distilling plant is measured with a/an ______.

A. psychrometer B. salinometer C. anemometer D. sphygmomanometer

33. The designed ______ is 20 tons per day, but the fresh water generator can only distil 15 tons at 44.

present.

A. displacement B. weight C. power D. capacity 45. 34. ______ play a very important part in hydraulic systems by preventing interaction between

different parts of the hydraulic circuit.

A. Motors B. Check valves C. Safety valves D. Reducing valves

In a radial piston pump, reversal and control of fluid flow are accomplished by moving the ______.

A. central valve B. radial plunger C. floating ring D. cylinder body

In a ordinary cargo crane, ______is fitted to rotate the crane.

A. the slewing motor B. the luffing motor C. the hoisting motor D. the fan motor

Which problems can occur if the brake band lining of a wildcat brake becomes excessively worn? A. The driving engine will over-speed. B. The anchor will immediately drop.

C. The clutch will overheat. D. The brake's effectiveness will be reduced.

______ are used for hauling in or letting out the wires which fasten the ship to the shore. A. Cargo winches B. Mooring winches C. Windlasses D. Cargo hatches Which of the following can be used in hydraulic transmission system?

A. Hydraulic oil B. Animal oil C. Light oil D. Fuel oil One factor that determines the frequency of an alternator is the ______. A. number of turns of wire in the armature coil B. number of magnetic poles C. strength of the magnets used D. output voltage

A DC generator is used to supply direct current in order to maintain an AC generator field and is known as a/an ______.

A. rotor B. stator C. exciter D. armature

When paralleling two AC generators, the frequency of the machine coming on-line, immediately prior to closing its breaker, should be ______.

A. slightly less than the oncoming generator frequency B. the same as the bus frequency

C. slightly greater than the bus frequency D. the same as the bus voltage

When securing an AC generator, you should FIRST ______. A. open the generator circuit breaker

B. switch the voltage regulator to 'manual' C. decrease the field excitation to minimum D. reduce the load on the unit

A generator is prevented from becoming motorized by the use of a/an ______. A. over-speed trip B. reverse power relay C. back pressure trip D. governor controls

The part of the shipboard electrical system used to control the distribution of power to the branch circuits is the ______.

A. bridge control panel B. disconnect links C. governor relay box D. main switchboard

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46. Which of the listed sections of an emergency switchboard is used to supply power for alarm

signals under emergency conditions?

A. The generator and bus transfer section B. The 450 volt, 60 cycle, 3 phase bus

C. The 120 volt, 3 phase, 60 cycle bus D. The 24 volt DC bus

47. 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. five 48. A fuse that blows often should be replaced only with a fuse of ______.

A. the recommended current and voltage rating B. higher current and voltage rating

C. higher current and lower voltage rating D. lower current and higher voltage rating

49. The overcurrent relay______ the motor contactor when the motor exceeds its rated current .

A. connects B. trips C. fouls D. destructs 50. Electric circuits are protected against overloads and short circuits by means of a/an ______.

A. circuit breaker B. amplifier C. diode D. capacitor

51. Prior to starting an AC generator prime mover, the voltage regulator cutout switch should be

placed in the _________.

A. manual position B. bus neutral position C. raise voltage position D. transfer position

52. Before M/E putting on the starting air, the reversing and control gear should be _____.

A. operated B. stopped C. checked D. removed

53. ______ 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

54. After “F.W.E.” is given, the air system is shut down, the _____ gear put in, all drains and

indicator cocks opened, and the cooling water kept running.

A. steering B. timing C. turning D. running 55. Which of the following must be eliminated to prevent accidents?

A. Unsafe actions B. Orderliness

C. Frequent inspections D. Good work habit/practices 56. A class ?C?fire would most likely occur in the ______.

A. engine room bilges B. main switchboard C. paint locker D. rag bin 57. The most likely place for a fire to start through the process of spontaneous combustion is in

_____.

A. an electrical switchboard B. the pressure tanks

C. the fuel oil tanks D. the oily rag bin

58. While on watch in the engine room, you hear a continuous sounding of the general alarm. Which

of the following actions should you take FIRST?

A. Secure the burners then proceed to your assigned boat station. B. Start the fire pump and establish flow to the fire main.

59.

60.

61.

62.

63.

64.

65. 66.

67. 68.

C. Open the guardian valve and standby to maneuver.

D. Open the master control valves on the fixed CO2 system.

A fireman's outfit carried onboard cargo vessels, must have a ______. A. canister-type gas mask B. fresh-air breathing apparatus

C. self-contained breathing apparatus D. combustible gas indicator

The safe rate of bunkering heavy fuel oil is directly related to the ______. A. type of fuel transfer pump aboard

B. temperature of the fuel oil being received C. size of the fuel storage tanks ashore

D. distance from the fuel oil storage tanks ashore

To anneal a copper gasket, you should heat the gasket ______. A. and quench it in oil B. cherry red and quench in water

C. and let it cool slowly in the air D. and carbonize it

Preventive maintenance _____.

A. should not be carried out during the watches. B. can only be carried out in port.

C. is a kind of maintenances carried out prior to the occurrence D. is a kind of maintenances carried out after the occurrence

The additional mark _____ in the Classification Certificate for Machinery represents that personnel are watching at engine assembly control station and monitoring all machinery and electronic devices.

A. BRC B. MCC C. AUT-0 D. AUT-1 Which of the following machinery space operations is required to be logged in the Oil Record Book?

A. Ballasting or cleaning of fuel oil tanks.

B. Shifting suction of main fuel pump to reserve fuel oil tank. C. Changing out sprayer plates to adjust for steam demand. D. Daily inspection of engine room bilges.

The Port Authorities, in accordance with the IMO resolutions have been carrying out _____ to enhance safety of ships.

A. CPP B. FPP C. PSC D. FSC The fire drill must, as far as practicable, be conducted as if _____. A. there is a minor emergency B. there is an actual emergency

C. there were a minor emergency D. there were an actual emergency

Duties shall be so organized by the chief engineer that the first watch at the commencement of a voyage and the subsequent relieving watches are _____and otherwise fit for duty. A. well trained B. in good luck C. in good health D. sufficiently rested

_____ should not undertake any task which will interfere with the supervision duties relating to the main machinery and associated equipment.

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