第47期轮机英语

47期轮机英语考试题目

一单项选择题

A1.The___ engine is used for alternators and some times for main propulsion provide a propeller of between

90 to 120 rpm.

A.four-stroke

B.two-stroke.

C.slow speed

D.reversible

B2.The abbreviation”MIP”stands for____,

A.middle indicating pressure

B.mean indicated pressure

C.mean pitch

D.middle indicated power

D3.The cetane number of a diesel fuel oil indicates its____.

A.viscosity

B.acid content

C.heating value

D.ignition quality

C4.In a two-stroke engine the camshaft rotates at___the enging rotational speed.

A.half

B.twice

C.the same speed as

D.four times

D5.A diesel enging is similar to a gasoline engine except that the former has no ____.

A.cross-head

B.cylinder

C.connecting rod

D.spark plug

C6.It is easier to replace a dry cylinder liner than a wet one because____.

A.of the thin wall thickedss

B.honing makes it easier to maintain the desired oil film

C.water seals are not required

D.it fits more loosely due to a decrease in heat transfer through the composite wall

D7.A main bearing consists of two shells which are secured by means of studs and____.

A.tie rods

B.though bolts

C.lead wires

D.bearing caps

C8.However fast or slow the combustion rate,it is still a____between carbon,hydrogen,sulph and oxygen that releases heat.

A.physical deformation

B.state exchange

C.chemical reaction

D.coalescence

A9.During the fuel injection period,fuel pressure must exceed cylinder gas pressure to____.

A.ensure penetration and distribution of the fuel in the combustion chamber

B.ensure the needle valves is flushed clean duringeach injection

C.prevent combustion gas blowback into the open needle valve

Dprevent reflected pressure waves when the neddle valve close.

B10.In a diesel engine lube oil system ,which of the following parts should be lubricated first?

A.Camshaft bearings

B.Main bearings

C.Piston crowns

D.Cylinder walls

B11.In a diesel engine closed freshwater cooling system,the amount of coolant flowing through the heat exchanger is controlled by the _____,

A.suction pressure regulator

B.thermostatic bypass valve

C.sea water temperature

D.water level in the expansion tank

C12.Which of diesel engine compnents listed increases air density and helps to improve engine operating efficiency?

A.Impeller

B.Air bottle

C.Air cooler

D.Exhaust diffuser

B13.A large two-stroke/cycle direct reversing diesel engine is to be revered. Prior to the admission of starting air you must_____.

A.line up the engine for restarting with diesel oil

B.reposition the fuel injection cam

C.change the intake and exhaust valve cam positions

D.place the starting cam in the intermediate position

C14.Which of the listed governer characteristics will greatly affect the load sharing relationship between paralleled diesel generators?

A.Sensitivity

B.Power

C.Speed droop

https://www.360docs.net/doc/043847668.html,pensation

C15.Thermocouple pytometers are used on large,main propulsion diesel engines to indicate the temperature of the _____.

A.cooling water leaving each cylinder

B.fuel oil entering the injector

C.exhaust gases atvarious loactions

D.lube oil at the bearing supplies

B16.After starting a diesel engine,which of the listed oprating conditions should be checked first?

A.Air box pressure

B.Lube oil pressure

C.Exhaust temperatures

D.Raw water pressure

C17.To shut down a diesel engine after it exceeds the set maximum speed ,which type of device listed should be used?

A.Speed limiting governor

B.Over-speed governor

C.Over-speed trip

D.Over-speed relay

A18.The treatment of the fuel oils involves storage,heating,filtering and_____.

A.centrifuging

B.pressurizing

C.atomization

D.igniting

B19.A propeller,in order to operate efficiently,must rolate at a relatively_____ speed

A.high

B.low

C.fast

D.lowly

https://www.360docs.net/doc/043847668.html,tcnt heat changes the___ of water.

A.physical-state

B.temperature

C.atmospheric-pressure

D.sensible-pressure

C21.The primary function of a flame safeguard system, as used on am automatically fired auxiliary boiler,is toprevent_____.

A.accidental dry firing and overpressure

B.uncontrolled fires in the furnace

C.explosions in the boiler furnace

D.overheating of the pressure parts

A22.Improper maintenance of the fule oil burners in an automatically fired auxiliary boiler could resuit in_______.

A.increased fule consumption

B.increased feed-water consumption

C.fule pump failure

https://www.360docs.net/doc/043847668.html,bustion control systerm failure

A23.Bumer ignition failure in an automatically fired auxiliary boiler could result in_____.

A.a burned out solenoid in the oil supply valva

B.high tempersure excess air

C.incorrectly setting the hot-welldump valve

D.an incorrectly positioned burner smubber(缓冲器)relary

B24.If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler,the cause may be___.

A.high steam pressure in the boiler

B.abnormally high feed-water tempreture

C.abnormally high boiler water temperature

D.steam demand exceeding feed pump capacity0

C25.Gear pumps are of positive displacement type pumps because they discharge a near constant amount of liquid_____pressure.

A.depending on

B.in relative

C.regardless

D.because of

C26.A supr gear pump should be operated with the discharge valves______.

A.slightly opened

B.thorttled

C.fully opened

D.halfway opened

C27.An independent bilge suction is reqired for____.

A.ballast tanks

B.sludge tanks

C.machinery space bilges

D.cargo hold bilges

A28.To thoroughly pump out the bilges ueing a horizontally mounted centrifugal pump,the________.

A.pump must always be primed

B.volute must impart a radial and rotary motion of the water

C.suction side connectin must guide the liquid to the lantern rings

D.stuffing box should not be allowed any water leakage

B29.An inadequate reciprocating bilge pump discharge ismost often caused by________.

A.defective safety valves

B.clogged suction stainers

C.scarred cylinder walls

D.clogged drain valves

B30.In a compression refrigeration plant,the hot,high pressure refrigerant gas is cooled by the sea water and becomes liquid in the_______.

https://www.360docs.net/doc/043847668.html,pressor

B.condenser

C.throttle valve

D.evaporator

D31.The___only allows for adjustment of temperature in each room by the occupant manually controlling the air volurne admitted.

A.central air conditioning system

B.high velocity system

C .low velocity system D.single duct system

D32.The opening of the humidifier?s valva of air-conditioner should be____,when the circurnstanc temperature is raised to above 5~8 0C in the winter.

A.desreased

B.increased

C.fixed

D.closed

C33.Under normal conditions,the quantity of air circulation becomes less and less.Whatis the reason?

A.dirty dclivery ducts

B.too mush refrigerant

C.the fouling filters

D.high temperature outside

D34.When bilge water is heated in a holding tank,which one of the following statementsis not accurate?

A.The relative high temperature facilitates primary gravity separation

B.Most of the oil and organic solvenits are rised to the top layer

C.The relative high the temperature is, the more the top oil wil be collected

D.The normal high temperature has little use on the separation of emuslsified oil.

C35.If scparating efffct of the oily water separeator is not good, we can improve it by____.

A.flushing separator with cold water

B.increasing bilge water supply flow

C.heat oily wather properly

D.opening manual oil discharge vavle

C36.Which is the pollution prevention equipmen?

A.booster pump

B.evaporator

C.incinerator

D.cooler

B37When does auxiliary burner of rotary nozzle type incinerator put into use?

?.when igniting П.the waste oil for dealing-water is too mush Ш.before stopping incinerator

A.?+П

B.?+Ш

C.П+Ш D?+П+Ш

A38.When anacrobic bacteria cinvert the sewage to an inert sludge,____.

A.no oxygen is needed

B.oxygen is necessary

C.oxygen is given off

D.no gas is produced.

C39.For a I..O purifier, if the back pressure of the oil outlet ie too high, the interface between oil and water in the bolw will____.

A.be interrupted

B.move downwards

C.move outwards

D.retain original position

A40.When scperating the lube oil without additive,it is ususlly working with hot waher; the aim isto remove___from it.

A.acid

B.oil sludge

C.mechanical impurity

D.salinity

C41. If the bolw of a disk type centrifugal purifier when opened as a separator is not primed the_____.

A.oil has a tendency to emulsify in the bowl

B.purifier wil act as a clarifier at the discharge ring

C.oil wil act lost through the water discharge ports

D.oil solids will be dsposited only at the intermediate top disk

B42.Tube leaks in the distillate cooler of a two stage flash evaporator will result in___.

A.loss of secong stage vacuum

B.contamination of the distillate

C.lower feed inlet tempercrature

D.contarnination of the second stage condenser

B43.Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator,are removed by the____.

A.spray pipes

B.demisters

C.condensers

D.splash baffles

B44.Overflow valve usually be used to____.

A.control the fluid flow through it

B.prevent the pressure before overflow valve over the specified value

C.make the pressure after overflow valve steady

D.control the direction of oil flow

A45.Among the basic categories of equipment, which of the following are used to convert menchanical into hydraulic energy?

A.the hydraulic pumps

B.valves

C.hydraulic cylinders

D.hydraulic motors

C46.Cargo handing unit is rated according to the___.

A.cargo crane

B.jib

C.safe working load

D.oil pressure

C47.The part of the anchor windlass that cngages the anchor chain for lifting is called the_____.

A.warping head

B.fairlead

C.wildcat

D.capstan

D48.In automatic____,the which may be overhanled and wire is piad off the barrel at a pre-determined

maximum tension.

A.cranes

B.windlass

C.capstans

D.mooring winches

D49.The major source of chemical contaminants in hydraulic fluid is_____,

A.microscopic steel shavings

B.abrasive waste

C.anti-oxidant compounds

D.oxidation by-products

B50.Before doing any work on a hydraulic system equippe with accumulators , you should _____.

A.drain the accumulators and purge with oxygen

B.bleed off all stored energy from the accumulators completely

C.charge the accumulators to prevent system energy loss

D.pupm the hydraulic fluid into the accumulators to prevent fluid loss

B51. 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

A52.The frequency of an operating altemator is controlled by the_____.

A relative speed of the rotor poles

B number of tums of wire in the armature coil

C strenghth of the magnets used

D output voltage

C53.Prior to closing the breaker when paralleling two AC generators,the recommended practice is to have the frequency of incoming machine_____.

A slightly less then line frequency

B the same as the line frequency

C shightly less than the line frequency

D have nothing to do with the line frequency

C54.If two A.C.generators are to be operated in parallel, the load is distributed evenly by_____.

A means of rheostat

B a balance coil

C adjusting the govemor settings

D changing exciation

B55.The first requirement for logical troubleshooting of any system is the ability to______.

A.collect all available data on a casualty

B.recognize normal operation

C.identify the probable cause of a symptom

D.isolate the faulty component

D56.______ is (are) not power supplied by main switchboard directly.

A.Steering gear and windlass

B.Navigation light and radio power panel

C.Navigation device power box

D.Daily fresh water pump

C57.The emergency generation or emergency battery is connected to_____ on most large ships.

A.distribution boards

B.section boards

C.emergency switch boards

D.main switch boards

A58_____ connectors hold best if a wire is accidentally pulled or a connection becomes loose

A.Ring type

B.Fork type

C.Spade type

D.Push on, pull off type

A59.The primary function of an electric motor is to_____.

A.Develop torque

B.generate high voltages

C.peoduce a magnetic field

D.generate high electrical resistance

B60 Fusos placed in series with a thermal trip-type circuit breaker are used for___.

A.time-delay protection

B.short-circuit protection

C.short duration surge protection

D.sustained overlaod protection

D61.Shore power must be____during dock repair.

A.disconnected

B.switched off

C.cut off

D.connected

B62.The operator of electrical motors should keep a constant check on the loads they carry because____.

A.low loads necessitate frequent insulation cleaning

B.exceeding nameplate values shortens useful life

C.energy is wasted if full loading is not utilized

D.power factor correction methods are load dependent

B63.Before a marine diesel engine is started the cylinders and pistons must be____.

A.cooled to appropriate temperature

B.warmed up gradually to appropriate temperature

C.opened up and renewed

D.ground and polished

A64.____is a precaution which contributees to avoiding trouble under normal operating conditions.

A.Constant inspection

B.Keeping constant load

C.Remaining constant temperature

D.Varying speed

C65.During ship manoeuvering,when the diesel is stopped,which of the following items is wrong?

A.keep all systems running normally

B.main engine is available at any moment

C.shut off the starting air bottle outlet valve

D.pay attention to the changes of the system parameters

A66.A tank which has been scaled 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 tanks coatings give off poisonous vapors in the presence of moisture

B67.The class of fire on which a blanketing effect is essential to extinguish the fire is_____.

A.Class…A?

B.Class…B?

C.Class…C?

D.Class…D?

A68.Fire in escaping flammable gas are quickly brought under control by____.

A.stopping the flow of gas

B.reducing the chemical chain reaction

C.increasing the oxygen supply

D.cooling below the autoignition point

D69.Which of the following stateements is ture coucerning carbon dioxide when used as a fire extinguishing agent?

A.Carbon dioxide is corrosive when exposed to fire.

B.Carbon dioxide should be applised slowly to a large engine room fire.

C.Its total cooling effect is far greater than water

D.Its smothering effect is excellent for class B fires

C70.While on watch in the engine room,you hear a continuous sounding of the general alarm,Which of the following actions should you take?

A.Make an entry in the official logbook.

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

C.Start the fire pump and check discharge pressure.

D.Secure auxiliary condenser overboard discharge.

B71.To determine that a compartment contains sufficient oxygen to sustain life,you should use a/an_____. A.explosimeser B.oxygen indicator

C.fresh air indicator

D.emergency escape breathing device

D72.If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off,the engineer should____.

A.close the static leg filling valve

B.close the overflow tank filling valve

C.reduce the oil pumping rate

D.stop the fuel oil pumping operation

B73.The_____tool is used in precision work to smooth or enlarge a slightly undersized hole.

A.round out

B.round life

C.reamer

D.hole driller

C74.During the dock repair,each sea valve must be disassembled,cleaned and ground well,the sealing surface between the valve and the valve seat should be checked and ratified by____before reassembled.

A.chief engineer

B.surveyor

C.the engineer

D.the technique personnel of the shipyard

C75.The additional mark___in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station is unmanned periodically.

A.BRC

B..MCC

C.AUT-O

D.AUT-1

D76.The Oil Record Book, as a part of the ship?s official logbook , shall be kept on board and preserved for a period of_____.

A.3 years after making the first entry

B.2 years after the last entry

C 3months after last entry D.3 years after the last entry

D77.The valid period of the International Oil Pollution Prevention Certificate on board isn?t more than _____.

A.one year

B.two years

C.four years

D.five years

D78.During the PSC inspection, under the provisions of SOLAS 74, which one may not be regarded as clear grounds for ships? detainment?

A.failure of the proper operation of emergency generator

B.insulation of piping including exhaust pipes in engine room contaminated by oil

C.improper operation of bilge pumping arrangements

D.damaged sanitary pump

A79.“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.regerence ship

B80.STCW 78/95 Convention shall apply to seafarers____on board seagoing ships entitled to fly the flag of a Party.

A.served

B.serving

C.surveyed

D.surveying

C81.All engineer officers and enginer room ratings shall be aware of the serious cffects of operational or accidental pollution of the marine environment and shall take all possible_____to prevent such pollution, particularly within the framework of relevant international and port regulations.

A.steps

B.procedures

C.precautions

D.programs

A82When the order given by bridge may have bad results the duty engineer should____.

https://www.360docs.net/doc/043847668.html,rm the captain for a further consideration

https://www.360docs.net/doc/043847668.html,rm the captain, and not perorm it

C.stop the M/E immediately, and then imform the chief engineer

D.stop the M/E immediately, and then imform the captain

B83.If an oil spill occurs on deck, you should_____.

A.cover the area with foam

B.cover the area with absorbent material

C.wash down immediately with a fire hose

D.wash down immediately with an oil dispersing solvent

C84.According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastic is ____.

A.welcome

B.admitted in some special sea ares

C.prohibited

D.acceptable

C85. The main objective of the SOLAS Convention is__.

A.to provide a solution of lowering pollution at sea

B.to specify minimum standards for the members composing the watch at sea

C. to specify minimum standards for ships considering their safety

D.to tell the company how to go about running their business

D86.Which of the following about ISM Code is not right?

A.It aim to ensure safety at sea

B. It aim to avoid damage to the environment

C. It aim to prevent human injury or loss of life

D. It aim to prevent a method to run a company

A87.The ship security assessment is an essential and integral part of the process of developing and updating______.

A.the ship security plan

B.the company security plan

C.the port security plan

D.the national security plan

C88.In order to limit the introduction of alien species by ship .______ was adopted on 13 Feb, 2004 at the IMO.

A.Revised Marpol annex Ⅰ

B.Revised Marpol annex Ⅱ

C.Intermational convention for the control and management of ship?s ballast water and sediments

D.ISPS Code

二．关联题

第一组

Starting Air System

The engine is started with compressed air of 30 bar.Minimum pressure required is 15bar.A pressure transmitter PT301 mounted on the starting air line before the main starting valve has an indicator in the instrument panel.The supply line form the starting air bottles is provided with a nonreturn valve and a drain valve.

The solenoid valve is electrica(remote control) or manual(on the engine)operated and send after activation a pilot air signal to the main starting air valve .After the main staring air valve is activated the air flows through the flame arresters to the starting air valves in the cylinder heads. Part of the air flow via the starting air distributor to each of the starting air valves in the cylinder heads.The starting air distributor controls the timing of opening and closing of the starting air valves. On the moment the main starting air valve is operated also the governor booster is energized.The main startting air line is provided of a safety valve.

Interlock valve is a safety device to avoid an engine start with engaged turning gear.

B89.As the engine is started with compressed air , the correct sequence of the following devices being activated is _____. 1.solenoid valve 2.starting air valve 3.starting air distributor 4.main starting air valve

https://www.360docs.net/doc/043847668.html,ernor booster

A.15423

B.14532

C.14325

D.43125

D90.The underline sentence “the governor booster is energized”probably means_____.

A.the governor booster is supplied with electric power

B.hydraulic oil is pumped into the governor booster

C.the governor starts to work before starting the engine

D.the governor booster is supplied with pressurized air before starting the engine

B91.Which of the following components are attached to the air bottles?

A.a pressure transmitter PT 301

B.a non-return valve and a drain valve

C.a solenoid valve

D.a starting air distributor

D92.When the engine is engaged with turning gear, _____ can keep the engine from starting.

A,the control air B.the solenoid valve

C.the main starting air valve

D.the interlock valve

第二组

（1）The company should establish procedures to ensure that the ship is maintained in conformity whit the provisions of the relewant rules and regulations and with any additional requirements which may be established by the company.

(2)In meeting these requirements the company should ensure that:

(2.1)inspections are held at appropriate intervals;

(2.1)any non-conformity is reported,with

Its possible cause,if known;

(2.3)appropriate corrective action is taken;and

(2.4)records of these activities are maintained

(3)The company should establish procedures in its safety management system to identify equipment and technical sy sudden operational failure of which may result in hazardous situations. The safety management system should pro specific measures aimed at promoting the reliability of such equipment or sysyems.Theses measures should include th testing of stand-by arrangements and equipment or technical systems that are not in continuous use.

D93This passage concerns___

A.the inspections of the ship and equipment

B.the reports of non-confomities.

C.the corrective actions

D.the maintenance of the ship and equipment

A94.In(2.4)of this passage,these activities?refers to the following activities except_____.

A.the establishment of any additional requirement

B.the corrective action take

C.the corrective action taken

D.the reporting of any non-conformity

B95.According to this passage,some particular equipment should have specific measures to prom reliability,because______.

A.it is not in continuous use

B.its sudden failure may result in hazardous situations

C.its stand-by arrangements may not be regularly tested

D.it may not be identified by the Company?s safety managemet system

D96.This passage is probably taken from_____.

A.the MARPOL Convention

B.the STCW Convention

C.the ISPS Code

D.the ISM Code

1-5ABDCD 6-10CDCAB

11-15BCBCC 16-20BCABA

21-25DAABC 26-30CCABB

31-35DDCDC 36-40CBACA

41-45CBBBC 46-50CCDDB

51-55BACCB 56-60DCAAB

61-65DBBAC 66-70ABADC

71-75BDBCC 76-80DDDAB

81-88CABCCDAC 89-96BDBDDABD