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。
一、单项选择题
1. A diesel engine is similar to a gasoline engine except that the former has no ______.
A. cross-head B. spark plug C. connecting rod D. cylinder
2. A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is
commonly classed as a ______.
A. slow-speed diesel B. medium-speed diesel C. high-speed diesel D. constant-speed diesel
3. Which of the diesel engine components listed increases air density and helps to improve engine
operating efficiency?
A. Impeller B. Compressor C. After-cooler D. Exhaust diffuser
4. For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because ______. A. it has a longer power stroke
B. more air gets into the cylinder each stroke
C. it develops twice as many power strokes at the same speed D. higher combustion pressure is developed
5. The intake valves in a diesel engine are reseated by ______.
A. cam followers B. push rods C. combustion gases D. valve springs
6. According to the way the energy of the exhaust gases is utilized, pressure-charging can be divided
into two main systems, namely, the constant-pressure system and ______. A. the pulse-phase system B. the pulse Doppler system C. the pulse system D. the pulse interval system
7. An over-speed safety device is usually fitted to a generator engine for______in the event of over-speed.
A. cutting power off the engine B. increasing the fuel pump setting C. braking the crankshaft D. stabilizing the ship speed
8. What preventative maintenance should be done frequently to diesel engine starting air receivers?
A. Drain the accumulated moisture. B. Test the relief valves.
C. Watch the temperature to prevent fluctuations in pressure. D. Clean the interior to remove oil and foreign matter.
9. Immediately after any diesel engine is started, the engineer should check the ______.
A. crankcase pressure B. lube oil pressure C. seawater pressure D. exhaust temperature
10. A controllable pitch propeller on a diesel driven vessel eliminates the need for ______.
A. friction clutches B. disconnect clutches C. reversing gears D. reduction gears
11. In motor ship, ______is often used to recover some of the heat carried in the exhaust gases from
the main engine.
A. an diesel oil heater B. a waste heat boiler C. a fresh water generator D. a donkey boiler 12. An exhaust gas bypass is installed on a waste heat boiler in order to ______.
A. bypass exhaust gas at high loads to prevent excessive back pressure B. bypass a portion of the exhaust gas at peak loads for better efficiency C. recycle exhaust gas to the turbocharger
D. minimize moisture condensation in the boiler gas passages at low loads
13. Prior to lighting off a cold automatically fired auxiliary boiler, you should ______.
A. check and regulate the water level B. close the air cock once fires are lit C. blow down the gage glass D. assure protective steam flow
14. Flame failure in an automatically fired auxiliary boiler can mostly result from a/an ______.
A. incorrect electrode setting B. incorrect nozzle position C. clogged fuel nozzle D. broken high tension lead 15. Waterside scale in a fire-tube boiler may cause ______.
A. increased heat transfer B. fireside erosion C. high steam demand D. overheated tubes 16. Which of the following will be the advantage of a centrifugal pump as compared with a
reciprocating pump? I. Its discharge is continuous; II. It has no internal valves; III. Upon accidental closing of discharge valve, excessive pressure will not build up A. I, II B. II, III C. I, II, III D. II only
17. Why are removable sleeves installed on centrifugal pump shafts?
A. They make it easier to replace the pump shaft packing. B. They can be economically replaced as they wear out.
C. They can be removed when it is necessary to lighten the weight of the pump. D. They increase the strength of the shaft.
18. If one of the bilge system manifold valves does not properly seat, the ______.
A. bilge well connected to that valve, plus the second bilge well being pumped will be completely emptied
B. bilge system will lose vacuum and prevent the other bilges from being pumped out
C. bilge well aft connected to that valve will siphon(虹吸) its contents to the forward bilge wells D. discharge pressure will be too high.
19. Which of the listed statements is correct concerning the starting of centrifugal pumps?
A. They should always be started with the discharge valve closed. B. They should always be started with the discharge valve opened. C. A priming pump is always required to flood the impeller suction. D. They should always be started with the sealing line valves closed.
20. The simplest method to use for determining if a centrifugal pump is operating as designed, is to
______.
A. closely observe the pump discharge temperature
B. close off the discharge valve, and watch for a rise in pressure
C. momentarily close off the suction valve, and watch for a rise in pressure D. use a clamp on ammeter and compare the readings to past records
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21. Which of the following modes of heat transfer does NOT require any physical contact between a
warmer and a cooler substance?
A. Radiation B. Conduction C. Natural convection D. Contact directly 22. A re-heater in an air conditioning system functions to ______.
A. control inlet air temperature B. control inlet air volume
C. maintain relative humidity at 15%
D. restore conditioned air temperature to a comfortable level
23. In a chilled water air conditioning unit using a reciprocating compressor, the refrigerating effect
of the primary refrigerant can be increased by ______. A. increasing refrigerant pressure in the coil
B. increasing chilled water flow through the cooler C. sub-cooling the refrigerant in the condenser D. superheating the refrigerant in the compressor
24. Sludge may form in the lubricating oil crankcase of a reciprocating air conditioning compressor
as a result of ______.
A. wax precipitation in the lube oil
B. contamination by dust, scale, or moisture C. refrigerant bubbles in the lube oil
D. refrigerant reducing the lube oil viscosity
25. Placing a filter on the ______of an oily water separator will “polish” the discharge but
overloading must be avoided.
A. suction side B. discharge side C. by-pass pipe D. sampling pipe
26. 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 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.
A. clarifier B. oil/water separator C. incinerator D. distiller
29. Most marine biological sewage treatment plants consist of all the following statements except
______.
A. aeration tanks B. settling tanks
C. disinfection agent （消毒剂） D. anaerobic bacteria (厌氧菌)
30. 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 surface
31. The ______of the gravity disc is too big. It cause oil to flow through the water outlet. We
changed the disc and no oil is found in the water outlet.
A. gravity B. diameter C. circumference D. cylinder
32. The advantages of flash type evaporators, as compared to submerged tube type evaporators,
include ______.
A. less internal corrosion because of lower brine density
B. higher temperature evaporation for lower salinity of the distillate produced
33.
34. 35. 36. 37. 38.
39.
40.
41.
42. 43. 44.
C. less scale formation in a flash evaporator
D. less feed-water required for a flash evaporator
Distilled water from an evaporator may be discharged into a drinking water tank ______. A. through a detachable hose connection
B. after passing through an activated charcoal filter
C. after chemical analysis shows it is fit for consumption D. through a solenoid operated three-way valve
What type of valve is used to direct the flow of hydraulic fluid?
A. relief valve B. direction control valve C. stop valve D. pressure control valve 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 general cargo crane, ______is fitted to lift the cargo load.
A. the slewing motor B. the luffing motor C. the hoisting motor D. the fan moter ______are used to handle anchors and chains.
A. Cargo winches B. Mooring winches C. Windlasses D. Cargo hatches
The clutch band of a constant tensioning mooring winch must be set up tight enough to drive the winch drum and should slip only when ______. A. excessive loads are placed on the winch B. minimum pull is being exerted by the winch C. automatic operation of the winch is desired D. wire is being retrieved at the maximum rate
Dual (双的)electro-hydraulic steering units usually operate ______.
A. with both pumps on line at the same time B．with one pump on standby
C．with the follow-up gear disconnected D．only when the rudder is moved amidships 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
An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship as a ______.
A. magnetic amplifier B. ship's service alternator C. three-wire DC generator D. saturable core reactor
Current changing in direction and rising and falling in value is ___ .
A. D.C. B. A.C. C. generator D. fresh water generator Equal power factors on paralleled AC generators are maintained by an automatic ______. A. voltage regulator B. reverse power relay C. reverse current relay D. governor control switch
______shall be continuously powered and shall have an automatic changeover to a stand by power supply in case of loss of normal power supply . A. Cooling system B. Alarm system
C. The air conditioning installation D. The mooring equipment
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45. Switchboards may be of the dead-front type in which all live parts are installed behind ______and
only the operation handles and instruments are on the front
A. the capstan B. the collector C. the panels D. the surface
46. The emergency generator or emergency battery is connected to ______on most ships.
A. distribution boards B. section boards C. emergency switch boards D. main switch boards 47. The primary function of an electric motor is to ______.
A. develop torque B. generate high voltages
C. produce a magnetic field D. generate high electrical resistance 48. Electrical leads and insulation on a motor should be painted with ______.
A. heat-resisting acrylic B. heat-resisting aluminum C. insulating varnish D. insulating white lead
49. A circuit breaker and a fuse have a basic similarity in that they both ______.
A. can be reset to energize the circuit
B. should open the circuit when overloaded
C. will burn out when an over current flow develops D. should short the circuit when overloaded
50. Electric circuits are protected against short circuits by means of a/an _______.
A. diode(二极管) B. amplifier C. circuit breaker D. capacitor
51. The electrolyte in a lead-acid storage battery consists of distilled water and ______.
A. hydrogen chloride B. calcium chloride C. sulfuric acid D. muriatic acid
52. When under maneuvering conditions with the machinery being manually operated the control unit
or console should be ___.
A. automatically controlled B. off power
C. continuously manned D. continuously unmanned
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. A tank which has been sealed for a long period of time can be dangerous because ______.
A. steel surfaces consume oxygen by rusting B. sealed tanks usually form a vacuum
C. moisture condenses in the tank, displacing the oxygen
D. most tank coatings give off poisonous vapors in the presence of moisture 56. A class 'C' fire is burning ______.
A. diesel oil B. magnesium C. dunnage D. electrical insulation 57. To prevent the spread of fire by conduction, you should ______.
A. close all openings to the area
B. remove combustibles from direct exposure C. cool the bulkheads around the fire D. shut off all electric power 58. The lengthening of a crack formed in the shell plating of a ship may be prevented by ______.
A. welding brackets across both ends of the crack B. chipping out and slot welding the entire crack C. drilling a hole at each end of the crack
D. cutting a square notch at each end of the crack
59. After a fire has been extinguished in a closed space, personnel may safely enter the space when
______.
A. smoke density has been decreased sufficiently to see the bulkhead opposite the compartment's entrance
B. a lifeline and explosion proof flash light are used
C. all smoke and toxic fumes are removed and an adequate oxygen supply is present D. overhaul has been completed to remove any possible source of re-ignition
60. While loading bunkers, you notice oil on the water near the vessel. What should you do first?
A. Stop loading
B. Notify the harbor administration.
C. Determine if the vessel is the source of the pollution.
D. Start the main engine and put them in gear to disperse the spill. 61. To anneal (退火)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
62. When a vessel is in dry-dock, the vessel's engineers should ______.
A. examine the condition of the propeller B. chip and paint all hull protection zincs C. install new docking plugs in all cofferdams D. inspect the hull for hogging or sagging
63. 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
64. Which of the following operations must be entered on the Oil Record Book Part I?
I. Routine discharge at sea of bilge water containing oil from the machinery spaces II. Bunkering of fuel oil
A. I only B. II only C. both I and II D. neither I nor II
65. Your ship’s certificates show that you did not do renewing work for certificate. All certificates
have expired a few days before. Thus, your ship is ______.It follows therefore that she will ______.
A. seaworthy / be fined in our port
B. un-seaworthy/ be disassembled in our port C. seaworthy / be assembled in our port D. un-seaworthy / be detained in our port
66. “Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a
______.
A. substandard ship B. standard ship C. over-standard ship D. reference ship
67. When deciding the composition of the engineering watch, which may include _____appropriately,
many factors shall be taken into account.
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第41期41805
