輪機英語補充810題

1、1compressed air is used on board ship_.a. for starting diesel engines b. in pneumatic control systemc. in pneumatic tools d. all the above are true.2the engineer in charge should notify the_ in the event of any serious occurrence or a situation where he is unsure of the action to take.a. captain b.

2、chief engineer c. duty bridge officer d. second engineer3at the completion of the watch each member should hand over to_ , ensuring that he is competent to take over and carry out his duties effectively.a. an oiler b. a pumpman c. his relief d. his leader4increasing the temperature of a fuel will re

3、duce its viscosity, and vice-versa. what does 'vice-versa' here imply?a. decreasing the temperature of a fuel will increase its viscosity.b. increasing the viscosity of a fuel will reduce its temperature.c. reducing the viscosity of a fuel will increase the temperature.d. increasing the temp

4、erature of a fuel will increase its viscosity.5among the basic categories of equipment, which of the followings are used to allow the hydraulic energy to be controlled?a. hydraulic pumps b. valves c. hydraulic cylinders d. hydraulic motors6the voltages most commonly adopted for ac system are either

5、440v or 220v_ .a. two-phase b. two-phrase c. three-phase d. three-phrase7it is well known that the whole power distribution of the ship's electrical services mainly depend on the_ .a. sub-boards b. main switchboardsc. emergency switchboards d. distribution boards8in no case shall ballast water b

6、e carried in_ except on those rare voyages when weather conditions are so severe that it is necessary to carry additional ballast water in cargo tanks for the safety of the ship.a. ballast tanks b. oil tanksc. segregated ballast tanks d. clean tanks9an electrically driven automatically operating aux

7、iliary blower is provided for slow speed uniflow and_ of a low speed diesel engine.a. manoeuvring operations b. bad combustion c. cooling d. mooring trial10fuels of high quality with their earlier ignitions will cause higher_ pressure in cylinders of a diesel engine.a. compression b. maximum c. rate

8、d d. oil11_ are play a very important part in hydraulic systems by preventing interaction between different parts of the hydraulic circuit.a. check valves b. motorsc. safety valves d. reducing valve12the over current relay_ the motor contactor when the motor exceeds its rated current.a. trips b. con

9、nects c. fouls d. destructs13the centrifuge is a perfectly balanced piece of equipment, rotating_ , so all parts should be handled with care.a. at low speed b. at high speedc. at medium speed d. none of the above.14the centrifugal separation of two liquids results in_ .a. the formation of a circular

10、 interface between the twob. the formation of a cylindrical interface among the twoc. the formation of a cylindrical interface between the twod. the formation of a circular interface among the two15with reference to an axial piston pump, which one of the following statements is correct ?a. the cylin

11、drical barrel is coupled to the motor.b. the cylindrical barrel has an odd number of bores.c. the bores end in sockets.d. the sockets fit in the swash plate.16if the temperature rises, the oil will become thinner, the amount that leak will be_ and the systems unable to build up the pressure required

12、.a. increasing b. increases c. decreasing d. decreases17the purpose of the evaporation is to_ .a. absorb latent heat of vaporizationb. absorb latent heat of fusionc. transfer latent heat of vaporizationd. transfer latent heat of fusion18the principle of mechanical refrigeration is_ .a. the conversio

13、n of a liquid to a gasb. the absorption of temperature under heat, pressure, compression and expansionc. the compression of a liquid under temperature and expansiond. the absorption of heat under temperature, pressure, compression and expansion19if a single-phase motor runs slower than normal, the c

14、ause may be_ .a. voltage high b. under loadc. starting winding cut out d. grounded stator/rotor coils20switchboard may be open front or dead front. in the case of_ , all the moving or movable parts, switch-gear, circuit breaker, contactors, etc. , are mounted behind the board, which merely shows to

15、the observer a series of plain levels with voltmeter,a. the front b. the behind c. the former d. the latter21cage-type induction motors have a very poor power factor which may be as low as 0.3-0.4 when_ .a. starting b. running c. at high speed d. at full load22thermocouples can be used over a range

16、of temperature from 25 to +65and are commonly found in_ .a. cooling water temperature measurement b. lube oil temperature measurementc. ice room temperature measurement d. exhaust gas temperature measurement23the development of the high automation in marine engineering_ to use the unmanned machinery

17、 space on board the ship.a. makes possible b. makes possible it c. makes it possible d. makes that is possible24on the other hand it is a_ for an engineer to be out of sight, sound and smell of the engine room all good sense with which to detect trouble.a. disadvantage b. advantage c. method d. mean

18、s25the_ has two phases jointed at each of the three slip-rings the alternator.a. delta arrangement b. star arrangementc. any arrangement d. all of the above.26if we can't remove the trouble with the main engine, the port authorities will consider our ship_ .a. is seaworthy b. to unseaworthy c. u

19、nseaworthiness d. unseaworthy27if black smoke is coming from the exhaust stack of a diesel engine, which of the following would be the trouble?a. bad exhaust valve b. leaky fuel injectorsc. not enough air d. all of the above.28the word "administration" in ism code means_ whose flag the shi

20、p is entitled to fly.a. the port authorities b. the government of the statec. any organizations d. the ship owner29the main objective for ship classification is also to_ safety at sea for life , ship cargo machinery and the environment.a. promote b. decrease c. rise d. affect30a lube oil filter can

21、not be used to remove most contaminants from lube oil. a contaminant which will remain in the lube oil before filtering is_ .a. acid b. fuel oil c. sediment d. water31_ , the engine must be stopped immediately.a. should knocking occur b. if knocking occurc. should if knocking occurs d. if occur knoc

22、king32the bearing cap and shell are replaced and tightened up until_ .a. the " nip " is zero b. the " nap " is zeroc. the " gap" is correct d. the " clearance" is correct33a propeller of 5.65m in diameter, having a mean pitch of 4.88m, turning at 72rpm, at a s

23、peed of 11 knots (339.79m/min), will give_ of apparent slip.a. 0.967 b. 0.033 c. 0.031 d. 0.96934the oil sludge is burnt in the_ onboard. i'll show you the ashes.a. boiler b. main engine c. auxiliary engine d. incinerator35if the psco from general impressions or observations on board has_ for be

24、lieving that the ship, its equipment or its crew do not substantially meet the requirements, the psco should proceed to a more detailed inspection.a. clean report b. serious deficiencies c. clear ground d. detention report36which of the statements listed concerning heat transfer is correct?a. heat i

25、s always transferred at a constant rate.b. heat transfer rate increases as temperature difference increases.c. the rate of heat transfer is not affected by temperature difference.d. the high temperature region is known as a heat sink.37when adding oil to a refrigeration system, precautions must be t

26、aken to ensure that_.a. the compressor suction pressure is not too highb. all air is purged from the pump and charging fittingsc. the high pressure cutout switch is held open to prevent accidental startingd. the condenser is completely shutdown first38hearing a strong noise,_ at once.a. the engine s

27、topped b. the engine was stoppedc. he stopped the engine d. he had stopped the engine39the data to be recorded on this sheet_ the performance of the engine.a. makes the experts to judge b. enables the experts to judgec. make the experts judging d. enable the experts to judge40all members of the engi

28、neering watch shall be familiar with assigned watch-keeping duties. in addition, every member shall, with respect to the ship they are serving in have knowledge of_. i. the use of appropriate internal communication systems. ii. the use of gmdss.iii. the escape routes from machinery spaces. iv. the n

29、umber location and types of fire-fighting equipment in the machinery spaces.a. i+iii+iv b. ii+iii+iv c. iii+iv d. i+ii+iii+iv41the_ 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. sola

30、s74 d. solas8842the younger motorman as well as the others_ to operate the oil separator.a. has learnt b. have learnt c. learn d. are learning43if a hydraulic pump is overheating, the cause may be_.a. excessive internal slippage in the pumpb. low discharge pressure and fluid flowc. excessive fluid l

31、evel in the hydraulic reservoird. operation of the pump at 100% efficiency44when a refrigeration compressor is in the 'off' cycle, the thermal expansion valve will_.a. always be wide open when the compressor restartsb. continue to operate as if the system were in operationc. remain open unti

32、l evaporator pressure equalizes, then close until the compressor restartsd. always be completely closed until the compressor restarts45defective timing gear in a diesel engine may lead to:a. smoky exhaust b. starting failure c. overload d. over speed46when entering a foam injected space_ breathing a

33、pparatusa. put out b. put on c. take off d. take in47if you_ the equipment more carefully before sail, we_ so much trouble now.a. examined, are not having b. had examined, would not havec. had examined, would not have had d. should examine, would not have48a centrifugal pump can't supply water a

34、fter starting. you should check_.a. discharge valve b. power supplyc. packing gland d. bearing lubrication49convention is the principle means_ temperature is equilibrated in liquids and gases.a. in which b. on which c. by which d. from which50the term ' load on top ' is used on many crude oi

35、l carriers, is to provide a method for_.a. calculating the ullage in the cargo tanksb. loading ballast by gravityc. the loading of new cargo into the slop tank as a procedure to minimize pollutiond. calculating the ratio of cargo expansion in a cargo tank51tell your men_ the rules and procedures of

36、working when dismantling the equipment.a. not to go against b. dont go against c. not go to against d. to not go against52let h_ the quantity of heat which has been converted into mechanical work.a. represent b. represents c. representing d. being represented53grind the_.a. keyway b. shaft c. packin

37、g d. valve54which pump is the self-priming pump?a. turbine b. centrifugal c. ejector d. mixed flow55the operating water is supplied under the_ of an oil separator.a. sliding bowl bottom b. bowl hood c. bowl d. filter units56during working of an air compressor,_ should be drained.a. inter cooler b. c

38、ylinder c. outlet pipe d. inlet pipe57in a refrigeration system, if the cooling water to the condenser fails, the_.a. box temperature solenoid valve will close b. expansion valve will closec. compressor will shutdown d. king valve will open58a solenoid valve used in a refrigeration system should be

39、installed_.a. with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valveb. upright, sensing temperature of the box, and upstream of the thermal expansion valvec. upright, sensing temperature of the box, and downstream of the thermal expansio

40、n valved. upright, sensing superheat of the tail coil, and upstream of the thermal expansion valve59defective governor in a diesel engine may lead to:a. smoky exhaust b. starting failure c. ignition relay d. over speed60if scavenge box should hot,_ would occur.a. seized piston b. defective atomizerc

41、. scavenge fire d. too much l.o.61tools with_ handles should be used to check electric circuit.a. plastic b. metal c. stainless steel d. copper62i find_.a. it is difficult for them to finish the job in timeb. difficult for them to finish the job in timec. they have much difficulty to finish the job

42、in timed. that difficult for them to finish the job in time63the flash point of a petroleum product is an indication of its_.a. viscosity b. pour pointc. volatility d. lower explosive limit64when the bearing becomes dry from lack of oil, the motor shaft may heat to_ an extent_ it welds itself to the

43、 bearing.a. either/or b. neither/nor c. such/that d. so/that65how do you treat someone suffering from electrical shock after you secure the source?a. check for respiration. b. check for pulse.c. treat for shock. d. all of the above.66what is the harmful effect of sulfur in a fuel?a. it causes excess

44、ive smoking and soot at low firing rates.b. it doesn't readily burn when combined with oxygen.c. it clogs fuel oil strainers more often.d. it forms a corrosive acid when mixed with water or water vapor.67every precaution must be taken to avoid_.a. sparking being taking place b. to spark taking p

45、lacec. sparking to be taken place d. sparking taking place68if exhaust temperatures are too high, you should check_.a. air cooler b. turbocharger c. charge air d. a+b+c69when start a screw pump, the by pass valve should be_.a. closed b. opened fully c. cracked open d. partly open70the most important

46、 characteristic of a fire extinguishing agent to be used on electrical fires is for the agent to be_.a. non-conducting b. flame resistant c. easily removable d. wet71during inspection of oil and oily mixtures from machinery spaces, which of the following factors should be taken into account by the p

47、sco?a. the quantity of oil residues generated.b. the capacity of sludge and bilge water holding tank.c. the capacity of the oily water separator.d. all of the above.72close the_.a. keyway b. shaft c. packing d. valve73the air compressor pumps air to the_.a. expansion tank b. combustion chamber c. ai

48、r receiver d. evaporator74when starting a reciprocating pump, the inlet valve should be_.a. closed b. opened fully c. cracked open d. partly open75the following engine parts are found damaged and we are about to_ compensation from the shipyard.a. claim to b. claiming to c. claim for d. claiming for7

49、6we've tried many ways, but all in vain. only in this way,_ the problem, i'm sure.a. can we solve b. we can solve c. we will solve d. can be solved77_ sometimes called filter, is a device designed to prevent the passage of unwanted solids into the system.a. steam trap b. check valve c. separ

50、ator d. strainer78the fire of electrical equipment is classified as_ fire.a. class a b. class b c. class c d. class d79the company which is defined in the ism code means_.a. the owner of the ship b. the manager who assumes the responsibility for operation of the shipc. the bareboat charter d. all of

51、 the above.80medium speed engines have a_ power to weight ratio than the slow speed two strokes, but due to the higher speeds tend to have_ maintenance intervals.a. higher/reduced b. higher/increased c. lower/reduced d. lower/increased81the purpose of the skirt or trunk in four-stroke cycle engines

52、is to act in a similar manner to a_.a. crosshead b. crown c. piston rod d. connecting rod82the pistons are cooled by_ oil from the forced lubrication.a. being given b. giving c. supplying d. being supplied83_ the moveable plate and floating ring inside the pump is very difficult.a. having adjusted b

53、. being adjusted c. to adjust d. adjusted84humans are still needed to monitor the condition of the boiler all the time the latter is operated,_ it is just to acknowledge an alarm buzzer or flashing light in a control room.a. even if b. so that c. such that d. in order that85indications of_ are loss in power and irregular running of the engine, high exhaust temperatures of corresponding units, high local temperature in scavenge trunk, surging of turbocharger, and sparks and smoke emitted from scavenge drains.a. a crankcase explosion b. a scavenge firec. abnormal compression ra