轮机英语大证考试模拟题(三)

1、精选优质文档-倾情为你奉上精选优质文档-倾情为你奉上专心-专注-专业专心-专注-专业精选优质文档-倾情为你奉上专心-专注-专业轮机英语大证模拟试题(三)1. In purification, there is no fuel oil in the clean oil outlet. It could be caused by_. too high temperature of the dirty fuel oil;too low temperature of the dirty fuel oil;clogged filter A. B. C. D. 2. Which of the follow

2、ing would not be burnt in an incinerator (not ratified by IMO) on board?A. oil rags B. PVC garbage C. waste oil D. waste clothes3. Which of the following statements is correct concerning the viscosity of lubricating oil?A. Viscosity will increase as temperature increases. B. Viscosity is a measure o

3、f a fluids internal resistance to flow.C. Viscosity is not dependent on temperature. D. Viscosity will decrease as temperature decreases.4. Which of the following conditions would cause “panting” in a steaming auxiliary boiler?A. Faulty flame scanner. B. Flame failure. C. Insufficient combustion air

4、. D. Low water level.5. Before replacing a piston you should cheek the rings to see that all clearances and gaps are within the permissible _.A. discrepancy B. error C. deflection D tolerance 6. While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the foll

5、owing actions should you take FIRST?A. Start the fire pump and establish flow to the fire main. B. Open the guardian valve and standby to maneuver.C. Secure the burners then proceed to your assigned boat station.D. Open the master control valves on the fixed CO2 system.7. The function of diesel engi

6、ne piston compression rings is to _.A. remove oil from the cylinder combustion space B. transmit heat from the piston to the cylinder linerC. prevent engine friction losses D. prevent piston side thrust8. Diesel engine automated control systems may utilize sensing devices of dual function with sensi

7、ng ranges providing both alarm and engine shut down capability. Which of the key points would only require an alarm sensor?A. Jacket water pressure and temperature.B. Lube oil sump level.C. Lube oil pressure and temperature. D. Engine over-speed.9. The activated sludge strength should be checked at

8、regular intervals, and it is good that the color of the aeration compartment water is_. A. blackish B. chocolate C. ivory-white D. yellow10. Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?A. Hydraulic switch and engage jacking gea

9、r. B. Motor drain and pneumatic control system power.C. Electric power and starting air D. Lube oil standby pump and control air 11. Down-comers installed on auxiliary package boiler are protected from direct contact with hot gases by_.A. steel baffle B. water wall tubes C. refractory and insulation

10、 D. several rows of screen tube12. Which factor determines the ring dam size for a fuel oil，tubular(管子型)bowl type, centrifugal purifier?A. The specific gravity of the fuel. B. The viscosity off the fuel.C. The quantity of water to be removed from the fuel. D. The quantity of dirt to be removed from

11、the fuel.13. From the separator the fuel enters_ for HFO.Drain valveDrain valveSetting tankHFOHFOMDOFuel pumpsEngineA. the double bottom tank B. the separator oil tank C. the daily service tank D. the setting tank14. When securing a flash-type evaporator for an extended period of time, you should _.

12、A. fill the unit with saltwater B. completely drain the unit C. tightly seal the unit to exclude airD. fill the unit with de-scaling compound15. It is necessary for the ship to contact _ for authorization prior to undertaking mitigating actions in an oil pollution incident. A. the shipping company B

13、. the coastal state C. the flag state D. the port state16. In cleaning up an oil spill, the use of chemical agents would _.A. disperse or dissolve the oil in the water B. not affect the oilC. remove the oil from the water D. absorb the oil for easy removal17. Under normal conditions, the quantity of

14、 air circulation becomes less and less. What is the reason?A. Dirty delivery ducts. B. High temperature outside. C. Too much refrigerant. D. The fouling filters.18. Electric insulation is made of organic substances and so gradually _ with age.A. becomes better B. deteriorates C. increases D. are fou

15、led19. According to the SOLAS convention, the engine room emergency bilge water suction should connect with _.A. the main S.W. pump or ballast pump that have the biggest output B. the air-conditioning water pumpC. the ballast pump D. the main S.W. pump20. The electrolyte in a lead-acid storage batte

16、ry consists of distilled water and _.A. calcium chloride B. muriatic acid C. hydrogen chloride D. sulfuric acid21.A rigid liner bore which is free of_ is ideal and, with the provision of good lubrication, provides optimum running condition for the piston and piston rings.A. expansion B. distortion C

17、. shrinkage D. elongation22. When reentering an engine room that has been flooded with CO2, the investigating team should initially _.A. attempt to operate machinery B. enter from the lowest levelC. leave the access door partially open D. enter from the highest level23. A constant supply of electric

18、ity is essential for ship, and 24. When making entries in the Oil Record Book, all quantities should be _.A. recorded as cubic meters with a conversion to barrels B. verified by the Chief EngineerC. recorded directly from the oil discharge monitorD. consistently recorded through the Oil Record Book

19、in one specified unit (gallons, barrels, cubic meters)25. An increased pressure differential between the inlet and outlet of a strainer usually indicates the strainer is _.A. holed B. dry C. clean D. fouled 26. AC and DC generators are similar in that they _.A. both rectify the voltage before delive

20、ry B. both supply three-phase powerC. are constructed at the same physical size for the same kilowatt rating D. both generate alternating voltages27. If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may need to be _. gas freed inert fi

21、lled with water A. B. C. D. 28. Which of the lists forms of heat transfer, if any, is illustrated by the flow of combustion gases through a boiler?A. Neither natural convection nor forced convection. B. Forced convection only.C. Both natural convection and forced convection. D. Natural convection on

22、ly.29. The normal color of the exhaust gas of the diesel should be _.A. black B. achromatism or thin gray C. thin white D. sky-blue30. The ground terminal of a starter should be connected to _.A. the commutator B. the starters frame C. the starters mounting bolts D. the common ground point 31. If a

23、centrifugal pump vibrates and is noisy when operating, the cause could be _.A. worn wearing rings B. reversed pump coupling C. worn gland sealing shaft D. a bent shaft32. A diesel engine with a combustion chamber located between the crowns of two pistons is known as a(an) _.A. double-acting engine B

24、. horizontal acting engine C. single-acting engine D. opposed pistons engine【关联题】After ensuring that the “nip” is correct the bearing clearance should be checked. The bearing cup and its associated half shells are removed leaving the other half in position. Two pieces of pure lead wire are placed ac

25、ross the journal at positions one-third and two-thirds along its length. The cap and shell are replaced and tightened up until the “nip” is zero. The cap and shell are then removed and the thickness of the lead wire measured by a micrometer. It is important to use only pure lead, which is very soft,

26、 and to choose a thickness of wire, which is greater than the normal allowable clearances but not greater than twice this amount. The clearance should be within the manufactures limits. As a guide these will be approximately 0.1 to 0.2 mm for white metal bearings and approximately 0.25 to 0.4 mm for

27、 copper-lead or tin-aluminum bearings with crankshaft journal diameters in the range from about 200 to 400m33. (4) Which of the following statements is true?A. The cap and shell are not to be tightened until the “nip” is zero.B. The cap and shell havent been tightened when the “nip” is zero.C. The c

28、ap and shell are to be tightened until the “nip” is zero.D. The cap and shell begin to be tightened when the “nip” is zero.34. (3)According to the passage, the clearance for white metal bearing should be _.A. within about 0.25 to 0.4 B. in the range from about 0.1 to 0.2 mm C. larger than 0.2 mm D.

29、less than 0.1 mm35. (2)According to passage, the thickness of the lead wire should be measured _.A. until the cap and shell are removed B. after the cap and shell have been removed second timeC. when the cap and shell are being removed D. before the cap and shell are removed36. The lead wire should

30、be put on the upper surface of the journal _.A. vertically B. longitudinally C. transversely D. angularity37. The main generators are connected to _.A. section boards B. emergency switch boards C. main switch boards D. distribution boards 38. The resistance to the movement of the globule in oily wat

31、er mixture depends on its size and the _ of the fluid. A. pressure B. viscosity C. velocity D. gravity39. The term used to express the ignition quality of a particular fuel is_.A. ignition index number B. cetane number C. octane number D. volatility point40. Moisture in a D.C.motor would cause _. A.

32、 short circuit B. speed up C. hunting D. slow down 41.The switchboard of the emergency generator doesnt have_.A. voltmeter and change-over switch B. synchronous meter C. ammeter and change-over switch D. frequency meter42. In a diesel engine cooling water system, a pH of 6.0 indicates a(an) _.A. sli

33、ghtly acidic condition B. neutral condition of water C. slightly alkaline condition D. over treatment of water43. While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are _. A. grounded B. running at the same speed C. of the same polarity D.

34、 in phase44. When it is necessary to open a refrigeration system for repairs and the system will be open for more than a few minutes, the open ends of the system should be_. A. purged B. evacuated C. dehydrated D. plugged45. If separating effect is not good, which measure should be taken?A. Improvin

35、g impulse of water flow. B. Working at intervals and properly heating C. Reducing water supply flow. D. Warming up to 80, increase water supply flow.D1 D2S1 S246. _D1 D2S1 S2A. High speed/ the cylinders B. Large crosshead type/ crossheadsC. Large crosshead type/ the cylinder D. Four-stroke/pistons a

36、nd cylinders47. _has a simultaneous suction action and discharge action. A. The gearwheel pump B. The double acting displacement pump C. The centrifugal pump D. the single acting displacement pump48. Which of the following factors determines the interval between discharges of a self-cleaning separat

37、or?A. the volume of the bowl B. the separating temperature C. the content of impurities in the fuel oil D. the rated throughput49. Which problems can occur if the brake band lining of a windlass brake becomes excessively worn?A. The brakes effectiveness will be reduced.B. The driving engine will ove

38、r-speed.C. The clutch will overheat. D. The anchor will immediately drop.50. In reference to air conditioning, when air attains the maximum mount of moisture it can hold at a specific temperature, it is said to be _. A. saturated B. condensed C. convected D. superheated 51. The objectives of the ISM

39、 Code are to ensure _.safety at sea prevention of human injury or loss of lifeavoidance of damage to the marine environment and to propertyA. B. C. D. 52. In order to limit the introduction of alien species by ship, _ was adopted on 13 Feb,2004 at the IMO.A. Revised MARPOL Annex B. International con

40、vention for the control and management of ships ballast water and sediments C. Revised MARPOL Annex D.ISPS Code53. The Pork State Control officer may witness a fire drill carried out by the crew assigned to these duties on the _.A. Navigation Log Book B. Oil Record Book C. Muster List D. Engine Room

41、 Log Book 54. The magnetic field is provided by electromagnets so arranged that adjacent poles have _.A. the same polarity B. positive polarity C. opposite polarity D. negative polarity 55. Which of the listed conditions can be considered as the single greatest cause of accidents?A. Excitement. B. H

42、uman error.C. Speed. D. Excessive knowledge or skill.56. A class “D” fire would be considered as burning _.A. magnesium B. electrical equipment C. oil D. wood57. _ is the main reason that reduces the power advantage of a two-stroke engine over a same size four-stroke one to about 1.8 times.A. Short

43、strokes in a circle B. Fewer strokes in a circle C. Inefficient scavenging D. Less fuel oil burning58. The drive motor will have a brake arranged to fail-safe, i.e. it will _ the load if power fails or machine is stopped.A. take B. put C. lift D. hold59. An independent bilge suction is required for

44、_.A. ballast tanks B. machinery space bilges C. cargo hold bilges D. sludge tanks60. Each of the engine cylinders is lubricated from a lubricator, driven by _.A. a separated motor B. the engines camshaft C. the engines piston D. a turbine【关联题】In view of the damage to the environment, and the cleanin

45、g-up costs which could arises as a result of a major oil spillage, it is important that all officers be aware of the consequences of oil pollution, and of the measures necessary to prevent it. Spills of oil on board need not result in pollution of the sea if simple safeguards are observed. Included

46、in the various Company and Government anti-pollution measures are a series of checks which the United States Coast Guard require to be carried out when handling oil cargoes in the United State. These include plugging of scuppers, inspection of the line connections at the manifold, as well as sealing

47、 off the overboard discharge valves. The United States Coast Guard uses a check-list to ensure that no precaution is overlooked, and a similar check-list should always be used by ships personnel at any port. Another important aspect of pollution precaution is good communication between the shore ope

48、ratives and the ships officers over every aspect of the planned operation.61. (4) What does the Passage mainly talk about?A. A major oil spillage B. Oil pollution prevention measuresC. The consequences of oil pollution D. The United States Coast Guard inspection.62. (3) There is no serious consequen

49、ces of pollution caused by oil spillage if _.A. oil pollution precautions are taken B. a good communication between ship and shore is keptC. everyone is aware of the consequences D. the cleaning-up costs are not too large63. (2) Which is not mentioned in the Company and Government anti-pollution mea

50、sures?A. Closing scuppers B. Covering the overboard discharge valves tightlyC. Good communication between Company and its ship D. Inspecting the line connections at the manifold64. (1)The USCG use a check-list so that_. A. ships personnel may have a similar copy B. they can inspect the ships one by

51、one according to the list of shipsC. they can have a good understanding with the ships officers D. they will not miss any item to be inspected65. When the order given by officer may have bad results, the duty engineer should _.A. inform the captain and not perform it B. stop the M/E immediately and

52、then inform the captainC. inform the captain for a further consideration D. stop the M/E immediately and then inform the chief engineer66. Purging air from a hydraulic system is necessary when _.A. adding small amounts of oil to the system B. the system has been drained and then filled with new oil

53、C. the system has been overheated D. the system has been idle for a long period of time67. Which of the following actions should normally be taken during each watch when the auxiliary boilers is in operation?A. Blow-down the water gage glass B. Lift the safety valves by hand.C. Inspect and clean all

54、 solenoid valves. D. Test boiler water alkalinity68. The external circumference of a pair of main bearing shells is slightly larger than that of the bore of the housing which receives them. The difference is termed _.A. nip B. gap C. lip D. nap69. In the process of engine stand-by, warm-up the engin

55、e usually through preheating_ of the diesel engine.A. water of the jacket water system B. water of the cooling system and L.O.of the L.O.system.C. L.O.of the L.O.system. D. fuel of the F.O.system 70. “Movement of engine no longer required” means “_”.A. Stop Engine. B. No Engine Revolutions. C. Stand

56、-by Engine. D. Finished With Engine.71. The crank-room cover should not be opened until at least _ minutes after the engine stops.A. 20 B.10 C. 15 D. 3072. The additional mark _ in the Classification Certificate for Machinery represents the propulsion apparatus is remotely controlled on the navigati

57、ng bridge control station, and engine room is watched by duty personnel.A. AUT-1 B.MCC C.AUT-0 D. BRC73. The officer in charge of the engineering _ the watch to the relieving officer if there is reason to believe that the latter is obviously not capable of carrying out the watch-keeping duties effec

58、tively.A. shall not take over B. shall hand over C. shall not hand over D. shall take over 74. Which of the turbo-charging methods listed directs the exhaust gases to the turbine at fairly uniform velocity and pressure? A. Constant velocity. B. Axial flow. C. Pulse pressure. D. Constant pressure.75.

59、 The abbreviation “MIP” stands for _.A. middle indicating power B. mean indicate pressure C. mean indicated pitch D. middle indicated pressure 76. During the dock repair, each sea valve must be disassembled, cleaned and ground well. Before it reassembled, the sealing surface between the valve and th

60、e valve seat should be checked by _before reassembled.A. chief engineer B. surveyor C. the engineer D. the technique personnel of the shipyard77. An increase in rotor clearances in a rotary pump will _.A. decrease pump capacity B. decrease pump cavitation C. decrease reaction ring clearance D. incre