大管轮轮机英语综合
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.
39. There is a danger of the starting current ______that the windings are burnt out. A. to increase B. to be so increased C. increased D. being so increased
40. The viscosity regulator controls the fuel oil temperature ______ provide oil at the correct viscosity for combustion.
A. in order that B. because of C. in order to D. owing to
41. When there is a fire in a large electric motor, normally the very FIRST step is to ______. A. secure the electric supply B. ventilate area to remove smoke C. start the fire pump and lead out hose D. apply foam
42. Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to ______.
A. temperature B. pressure C. engine speed D. all of the above
43. With UMS, when the engine room is unwatched ______will control the main engine. A. the bridge officer on watch B. the chief engineer C. the duty engineer D. the duty motorman
44. The correct tightening is obtained by use of ______to measure the extension given to the bolts. A. pressure gauges B. stretch gauges C. thermometers D. bridge gauges 45. A main propulsion diesel engine is normally shut down by ______. A. shutting off the air supply B. over-speeding the engine C. securing the fuel supply D. securing the ignition system
46.
One cylinder of a diesel engine is persistently knocking and does not cease when the fuel supply to that cylinder is secured. Which of the following problems may be the cause? A. Low loading of the cylinder. B. Excessive cooling of that piston.
C. Sluggish ring action on the piston. D. A mechanical defect in a working part. 47. Poor combustion in a diesel engine can be caused by ______________. A. reduce the engine load B. increase the cooling water flow C. increase the lube oil pressure D. adjust the fuel rack
48.
If fuel injection to a four-stroke/cycle diesel engine 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
49.
Diesel engine automated control systems may utilize sensing devices of dual function, with sensing ranges providing both alarm and engine shut down capability. Which of the key points listed would only require an alarm sensor?
A. Lube oil pressure and temperature. B. Jacket water pressure and temperature. C. Engine over-speed. D. Lube oil sump level. 50. Fix the fuel injector into ______after repair.
A. the cylinder liner B. the cylinder cover C. the cylinder jacket D. the piston 51.
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
52. Diesel engine exhaust temperatures may be used to indicate ______.
A. leaking exhaust valves B. an overloaded cylinder C. a clogged injector nozzle D. all of the above
53. Shims of different thicknesses are inserted between the shells to enable adjustment of ______.
A. the bearing clearances B. the bearing thickness C. the bearing strength D. the bridge hardness
54. 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 55. Tools with ______handles should be used to check electric circuit.
A. plastic B. metal C. stainless steel D. copper
56. It is well known that the whole power distribution of the ship’s electrical services mainly
depend on the ______.
A. sub-boards B. main switchboards C. emergency switchboards D. distribution boards 57. The ______is used to measure current.
A. ammeter B. voltmeter C. wattmeter D. frequency meter
58. If the jacket water temperature of an operating diesel engine suddenly rises above normal, the
cause can be attributed to _____________. A. an overfilled expansion tank
B. excess chromate(铬酸盐) treatment of the jacket water C. a clogged raw water sea suction
D. cavitation erosion of the heat exchanger tubes
59. The Company should ensure that ______involved in the Company’s SMS have an adequate
understanding of relevant rules, regulations, codes and guidelines. A. masters B. chief engineers C. crew D. personnel 60. Routine monitoring of a diesel engine should include ______.
A. checking for leaks B. checking temperatures and pressures C. listening for abnormal noises D. all of the above.
61. If your vessel has a starboard list after taking on fuel, you would transfer fuel ______.
A. to starboard B. to port C. forward D. aft
62. The conventions under which the port state control inspection is carried out include all the
following except ______.
A. SOLAS 74 B. MARPOL 73/78 C. STCW 78/95 D. ISM Code
63. ______may have two emergency source of power, thus requiring two emergency switchboards.
A. Large passenger vessels B. General cargo ships C. Container ships D. Oil tankers
64. Tell your men ______the rules and procedures of working when dismantling the equipment.
A. not to go against B. don’t go against C. not go to against D. to not go against 65. Which of the followings is least likely to cause the ignition of fuel vapors?
A. Static electricity B. An open running electric motor C. Loose wiring D. Explosion proof lights
66. The term ‘ proper metering ’ , as applied to a diesel fuel injection system, can be best defined
as ______.
A. delivering the same quantity of fuel to each cylinder for each power stroke according to engine load