我
- A.present
- B.prevent
- C.avoid
- D.provide
- A.current in the circuit
- B.voltage in the circuit
- C.inductance in the circuit
- D.resistance in the circuit
- A.oil spray
- B.oil bath
- C.oil control rings
- D.drilled passage through the camshaft
- A.the camshaft
- B.the flange
- C.the ridge
- D.the bulge
- A.higher than the actual drum water level
- B.equal to the actual drum water level
- C.increasing due to steam condensation in the glass
- D.lower than actual drum water level
- A.with the axis of the solenoid horizontal, sensing temperature of the box, and upstream of the thermal expansion valve
- B.upright, sensing temperature of the box, and upstream of the thermal expansion valve
- C.upright, sensing temperature of the box, and downstream of the thermal expansion valve
- D.upright, sensing heat of the tail coil, and upstream of the thermal expansion valve
- A.The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump
- B.Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight
- C.Rotary pumps occupy only one-half the space of reciprocating pumps
- D.Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump
- A.machine efficiency
- B.machinery efficiency
- C.mechanical efficiency
- D.mechanics efficiency
- A.The piston rod
- B.The cross head pin
- C.The gudgeon pin
- D.The crank-pin
- A.a centrifugal fan
- B.a direct expansion cooler
- C.a hermetic compressor
- D.a centrifugal pump
- A.capacity will increase
- B.capacity will decrease
- C.suction pressure will increase
- D.suction pressure will decrease
- A.try to find out where the oil is coming from
- B.call the Master
- C.have the pump man check the discharge piping
- D.shutdown operations
- A.evaporator
- B.compressor
- C.condenser
- D.none of the above
- A.the main propulsion plant
- B.lifesaving jackets
- C.lifeboat engine
- D.state of emergency generator
- A.obtain injection lag
- B.help mix fuel and air
- C.increase combustion pressure
- D.utilize higher injection pressures
- A.Any time it is deemed necessary
- B.Only with the masters permission
- C.After a 10 minute delay to the input command
- D.Only after the throttle has been placed in stop
- A.the suction pressure to decrease
- B.the suction temperature to increase
- C.increased ice formation on the evaporator coil
- D.excessive short cycling of the compressor
- A.temperature and pressure
- B.humidity and temperature
- C.pressure and vacuum
- D.pressure and humidity
- A.(1) only
- B.(2) only
- C.(1) and (2)
- D.(1),(2) and (3)
- A.informative note
- B.invoice
- C.store booklet
- D.maintenance book
- A.flame safety lamp
- B.combustible gas indicator
- C.gasometer
- D.oxygen indicator
- 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
- A.internal heat it can withstand
- B.load it can carry continuously
- C.load it is capable of supplying
- D.overload it can carry for a specified time only
- A.the relief valve should open before the high pressure cutout
- B.the relief valve should open and allow the excess refrigerant to flow to the receiver
- C.the high pressure cutout switch should operate before the relief valve opens
- D.you should close in on the suction valve
- A.wash with salt water
- B.wash with sterile mineral oil
- C.treat it like frostbite
- D.treat it like any burn
- A.variable stroke pumps
- B.multistage pumps
- C.positive displacement pumps
- D.triple-ported pumps
- A.little
- B.few
- C.a little
- D.a few
- A.be treated according to the C/Es command exactly
- B.be treated according to MARPOL
- C.accumulate in bilges or on tank tops in accordance with MARPOL
- D.discharge to sea at the specified areas
- A.blue
- B.green
- C.orange
- D.purple
- A.Scavenging time should be more 30 seconds before igniting
- B.The temperature of sludge tank is 80~100℃
- C.First igniting the incinerator with diesel oil, when the temperature of health is about 600℃, the sludge oil drawn in
- D.The ash can be dumped into sea when the distance is more than 3 miles from land
- A.spends/in
- B.spent/on
- C.has spent/on
- D.had spent/in
- A.throttling the pressure line
- B.changing the speed of the rotor
- C.either A or B
- D.None of the above is true
- A.low exhaust temperature
- B.low exhaust pressure
- C.mechanical knock in each cylinder
- D.black or gray exhaust smoke
- A.loss of field excitation
- B.large increase in load
- C.total loss of load
- D.loss of steam pressure
- A.be clear
- B.be blue
- C.be light green
- D.show bubbles
- A.cylinders
- B.exhaust valves
- C.pistons
- D.fuel valves
- A.dirt will cause corrosion of bearing
- B.bearings will leak oil excessively
- C.dirt is very abrasive when mixed with grease
- D.grease will become inflammable
- A.smaller
- B.larger
- C.higher
- D.lower
- A.system is overcharged with refrigerant
- B.system is low on refrigerant
- C.discharge valves are leaking excessively
- D.discharge valves are leaking slightly
- A.facilitate the installation of piston rings
- B.allow for the expansion of the piston during operation
- C.prevent crankcase vapors from entering the combustion chamber
- D.reduce wearing of the upper cylinder liner
- 41
-
The reversing cams of some four-stroke/cycle diesel engines are brought into position by ________.
- A.sliding the camshaft along its axis
- B.rotating the cam 180
- C.rotating the cam followers 180
- D.moving the idler sprockets in the drive chain
- A.stopping
- B.being stopped
- C.to stop
- D.to be stopped
- A.the monitoring equipment is out of order
- B.separating effect becomes bad
- C.inner wall is contaminated
- D.separating effect becomes bad and inner wall is contaminated
- A.additional
- B.permanent
- C.temporary
- D.long
- A.place standby cooler in operation
- B.reduce engine load
- C.check thermostatic valve
- D.clean sea water strainer
- A.telescopic pipe
- B.large bore pipe
- C.generating pipe
- D.central pipe
- A.specific gravity or relative density
- B.open flash point and closed flash point values
- C.higher calorific and lower calorific values
- D.cloud point and pour point values
- A.stuffing boxes eliminate the leakage problems usually associated with other gear pumps
- B.it is not necessary to closely maintain design clearances with this pump
- C.they are essentially self-priming and produce a high suction lift
- D.these pumps are designed with extreme tooth angled
- A.it is fitted with neoprene O-ring seals
- B.the honing process makes it easier to maintain the desired oil film
- C.there is likelihood of water leaking into the combustion space
- D.it fits more loosely due to a decrease in heat transfer through the composite wall
- A.frames
- B.joiners
- C.longitudinals
- D.knees
- A.The liquid receiver functions to collect and remove non-condensable gases
- B.A thermostatic expansion valve is used to control refrigerated space temperature
- C.Refrigerant temperature in an evaporator is directly related to refrigerant pressure
- D.Dehydrators must be used continuously in a refrigeration system
- A.Hard alloy steel construction
- B.Beveled edges on the valve head
- C.Low alloy steel construction
- D.Poppet type design
- A.require no lubrication under normal operating conditions
- B.compensate for gross misalignment in the drive train
- C.are able to transmit high torque ,even where slight misalignment exists
- D.will rapidly disconnect the engine from the line shaft
- A.water discharges from the indicator cocks
- B.no water is leaking into crankcase
- C.no water in the scavenge belt
- D.the rpm is lower than the speed of Dead Slow Ahead
- A.Latent heat of vaporization
- B.Heat of compression
- C.Superheat
- D.All of the above
- A.have a greater head capacity
- B.operate with increased impeller efficiency
- C.discharge through the suction side of the pump casing
- D.require more power to run the shaft
- A.If the first stand-by set failed
- B.If the first stand-by set fails
- C.If the first stand-by set will fail
- D.If the first stand-by set doesn’t fail
- A.installations
- B.basket strainers
- C.a cylindrical container
- D.a metal or wire basket
- A.crankcase pressure
- B.compression pressure
- C.scavenge pressure
- D.exhaust manifold pressure
- A.Power piston
- B.Control rack
- C.Weights acted on by centrifugal force
- D.Isochronous droop spring
- A.Open the machine on both ends so as to allow the air and dust to escape
- B.Be certain that the circuit breaker is opened and tagged on the feeder panel
- C.Be certain that the air is clean and as dry as possible
- D.All of the above
- A.low compression
- B.failure of the fuel pump to discharge fuel
- C.incorrect timing of fuel pump
- D.turning gear being still on
- A.I+II
- B.I+III
- C.II+III
- D.I+II+III
- A.expansion tank
- B.combustion chamber
- C.air receiver
- D.evaporator
- A.water leakage
- B.steam leakage
- C.oil leakage
- D.air leakage
- A.gravity separation
- B.centrifuge
- C.Cyclone
- D.Cross-flow membrane filtration
- A.the good sealing performance and the simple structure
- B.the good sealing performance and the short life expectancy
- C.the good sealing performance but the short life expectancy
- D.the good sealing performance and the lower cost
- A.filled with clean water before operation
- B.keep air cushion in oil collecting space during running
- C.check oil level during running
- D.clean inner separator with low pressure stream
- A.improve fuel economy
- B.increase the air charge velocity
- C.reduce the risk of explosion
- D.all of the above
- A.heat
- B.power
- C.horsepower
- D.foot-pound
- A.low pressure at all times
- B.full pressure at all times
- C.low pressure at intermittence
- D.full pressure at intermittence
- A.the same indicated horsepower as a four-stroke/cycle engine
- B.twice the indicated horsepower as a four-stroke/cycle engine
- C.one half indicated horsepower as a four-stroke/cycle engine
- D.one power stroke for every two crankshaft revolutions
- A.will be modulated in proportion
- B.will be modulated in proportion and integral
- C.will be modulated in proportion and differential
- D.will not be modulated at all
- A.to cut down the amount of cooling water needed
- B.to prevent an excess amount of cooling water from being discharged to the bilges
- C.to supply hot water to the evaporator for more economical operation
- D.None of the above is tree
- A.Water Head Register
- B.Water Heater Re-circulating
- C.Waste Heat Recovery
- D.Waste Handle Reference
- A.compressor is overloaded
- B.motor is overloaded
- C.foundation bolts are loose
- D.belts are too tight
- A.bleeding refrigerant from the condenser
- B.opening a drain petcock on the oil separator
- C.condensing the water in the heat exchanger
- D.using a dehydrator cartridge
- A.refrigerant bubbles in the lube oil
- B.refrigerant reducing the lube oil viscosity
- C.oxidation of the lube oil from overheating
- D.reducing the floc or cloud point of the oil
- A.fresh water
- B.vapor
- C.mixture
- D.liquid
- A.first survey and certificate exchange survey
- B.first survey and operation survey
- C.first survey and periodic survey
- D.classification survey and certificate exchange survey
- A.more power strokes per revolution
- B.the use of scavenge air
- C.more complicated valve gear
- D.higher working temperature of the piston and cylinder
- A.remain in the vicinity of the vessel
- B.head for the closest land
- C.head for the closest sea-lanes
- D.get a majority opinion
- A.MARPOL Annex III
- B.MARPOL Annex VI
- C.MARPOL Annex V
- D.MARPOL Annex VI
- A.occurred
- B.occurring
- C.not happening
- D.occur
- A.automatic
- B.local
- C.remote
- D.manual
- A.Lifejackets
- B.Survival at Sea manual
- C.lifeboat
- D.torch
- A.swept volume of the cylinder
- B.inside diameter of the cylinder
- C.piston displacement in the cylinder
- D.length of the piston stroke
- A.the ship security plan
- B.the company security plan
- C.the port security plan
- D.the national security plan
- A.cooling water
- B.fuel oil
- C.sea water
- D.diesel intake air
- A.give the pressure
- B.give the contents
- C.give the shape of the tank
- D.give the accuracy level
- A.to repair/to renew
- B.repairing/be renewed
- C.repairing/will be renewed
- D.to repair/to be renewed
- A.relative speed of the rotor poles
- B.number of turns of wire in the armature coil
- C.strength of the magnets used
- D.output voltage
- A.a spring
- B.an electromagnet
- C.the force of gravity
- D.refrigerant pressure
- A.be switched off by the duty officer
- B.be switched on by the duty officer
- C.be switched off automatically
- D.be switched on automatically
- A.I only
- B.II only
- C.both I and II
- D.neither I nor II
- A.A room thermostat activates an electric heater at each individual chilled air outlet when necessary
- B.Varying the number of passes the air makes across the coils
- C.Varying the temperature of the water through the coils
- D.Varying the quantity of water flowing through the coils
- A.decrease in maximum cylinder pressure
- B.increase in ignition lag
- C.decrease in fuel consumption per horsepower-hour
- D.decrease in exhaust manifold pressure
- A.ISM code
- B.ISPS code
- C.IBC code
- D.FSS code
- A.the same as
- B.similar to
- C.separated from
- D.different from
- A.higher torque but lower brake horsepower
- B.lower torque but higher brake horsepower
- C.higher torque and lower brake horsepower
- D.lower torque and higher brake horsepower
- A.stop-check valves installed in the bilge manifolds
- B.using a positive displacement reciprocating bilge pump
- C.installing eductors in all bilge rose boxes
- D.installing a swing check before each bilge valve
- A.stop valves
- B.pressure relief valves
- C.balance valves
- D.regulating speed valves
- A.run continuously
- B.not start
- C.have high discharge pressure
- D.short cycle on the high pressure switch
- A.During annual repair
- B.Usually during dock repair
- C.Before sea trial
- D.After 5 years from last annual survey
- A.keyway
- B.shaft
- C.packing
- D.valve
- A.up/opened
- B.down/open
- C.up/closed
- D.down/closed
- A.Increases the sludge forming tendency of lube oil
- B.Prevents the accumulation of combustible gases
- C.Improves lube oil cooling
- D.Improves cold weather starting
- A.The coolant temperature must be maintained at 180℃
- B.The thermostatic bypass valves must be manually opened before the engine is started
- C.The pressure cap must be removed while the engine is secured
- D.Electrical power to the heater must be secured before the cooling system is drained
- A.greater overall efficiency
- B.greater fuel economy
- C.lower horsepower
- D.lower compression ratio
- 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
- A.rated capacity of that purifier
- B.viscosity of the oil being purified
- C.maximum design speed of that purifier
- D.specific gravity of the oil being purified
- A.will be speeded up
- B.should be slowed down
- C.must slow down
- D.have to be slow down
- A.represent
- B.represents
- C.representing
- D.being represented
- A.viscosity
- B.flash point
- C.cetane number
- D.calorific value
- A.increasing the linear velocity of the exhaust gases
- B.changing directions of exhaust gas flow
- C.decreasing the temperature of the exhaust gases
- D.accelerating the exhaust gas through a reduced size orifice
- A.an incorrect diesel generator governor speed droop adjustment
- B.a faulty reverse power relay within the main circuit breaker assembly
- C.unsynchronized isochronous load distribution adjustments
- D.a different speed setting on each unit
- A.cranes
- B.winches
- C.capstans
- D.windlass
- A.flat surface
- B.mirror finish
- C.sloping surface
- D.inclined surface
- A.Motors
- B.Check valves
- C.Safety valves
- D.Reducing valve
- A.the temperature and flow quantity of the exhaust gas from M.E
- B.the quantity of steam demanded
- C.the rotary speed and the cooling water temperature of main engine
- D.efficiency of M.E turbocharger
- A.overflowing
- B.sump
- C.bilge
- D.buffer
- A.SOLAS
- B.MARPOL
- C.STCW
- D.Ballast Water convention
- A.specific gravity
- B.viscosity
- C.acid value
- D.calorific value
- A.make use of
- B.have made the use of
- C.by means of
- D.make advantage of
- A.safe for becoming rounded
- B.safe for hot work
- C.not safe for personnel
- D.not safe for hot work
- A.the S.W outboard valves
- B.the tailshaft L.O stop valve
- C.the drain valve of the boiler
- D.propeller shaft sealing device
- A.open the filter and inspect the elements
- B.check the lube oil pump discharge pressure
- C.check the lube oil header pressure
- D.check the pressure drop across the filter
- A.8 – 10℃
- B.10 – 12℃
- C.10 – 15℃
- D.10 – 20℃
- A.to help
- B.to limit
- C.to protect
- D.to remove
- A.water
- B.fuel
- C.steam
- D.air
- A.The chief engineer
- B.The second engineer
- C.The third engineer
- D.The fourth engineer
- A.gas oil
- B.M.D.O
- C.residue oil
- D.crude oil
- A.filled with bilge water
- B.filled with oil
- C.filled with clean water
- D.be emptied
- A.Cross
- B.Parallel
- C.Counter
- D.Circular
- A.compressed air
- B.electricity
- C.hydraulic oil
- D.compressing air
- A.decrease until the engine speed increases
- B.increase as the load increases
- C.decrease as the load
- D.increases remain unchanged
- A.Ensure proper cylinder lube oil flow
- B.Open all air space drain cocks
- C.Open all indicator valves
- D.all of the above
- A.twice the crankshaft speed
- B.half the crankshaft speed
- C.the same speed as that of the crankshaft
- D.a speed independent of that of the crankshaft
- A.if the ship must be stand by
- B.if M.Eshould be stopped
- C.if keep-watching as in voyage
- D.if the ship must anchor two anchors
- A.Reduce engine speed to idle before removing the filter
- B.Soak the dirty filter in kerosene only
- C.Blow out the air inlet with compressed air
- D.Cover the air inlet after removing the filter
- A.The hose should not be twisted
- B.The hose should be protected with a sleeve if it is subjected to rubbing
- C.There should be some slack in the hose
- D.All of the above
- A.plating forming the engine room tank top
- B.doubler plating installed over the flat keel plate
- C.a watertight boundary formed by the inner bottom
- D.compartments between the inner and outer bottoms
- A.controlled variable
- B.manipulated variable
- C.set point
- D.control point
- A.Governors
- B.Alternators
- C.Blackboards
- D.Switchboards
- A.ff overheat is found, the engine must be stopped for inspection
- B.Much heat of the crankcase door indicates that the bearing is overheated√
- C.If bearing clearance is too large, knocking will be heard in the crankcase
- D.If bearing clearance is too large or too small, the white metal may be melted
- A.expansion space to leave in a tank
- B.flash point at which the fuel will burn
- C.temperature to which the fuel must be heated
- D.rate at which the fuel can be pumped during transfer operations
- A.should be correctly carried out
- B.should correctly be taken place
- C.should carded with care
- D.must to carry out with great care
- A.Exhaust temperatures
- B.Raw water pressure
- C.Lube oil pressure
- D.Air box pressure
- A.open the indicator cocks
- B.supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)
- C.put the fuel handle in the “stop” position
- D.pump up the air bottle
- A.repair list
- B.spare parts order list
- C.price list
- D.bunker list
- A.bedding
- B.pipe insulation
- C.paint
- D.a generator
- A.cause of salt contamination
- B.location of salt water contamination
- C.chemical makeup of feed-water
- D.level of alkalinity in condensate
- A.The propeller hub taper and shaft keyway should be inspected for cracks or corrosion
- B.The stern bearing alignment with the stern frame. should be checked
- C.The interior of the stern tube should be inspected for leaks
- D.The shaft liner should be removed and inspected
- A.Late as it was
- B.As it was late
- C.Since it was late
- D.Because of its late
- A.SEA CHEST
- B.SCUPPER
- C.SCUTTLE
- D.SEA PORT
- A.water in the fuel oil supply
- B.excessive fuel nozzle holder cooling
- C.a distorted fuel spray pattern
- D.leakage past the plunger into the oil drain
- A.dock
- B.hold
- C.pedestal
- D.machinery space
- A.coulombs per second
- B.revolutions per second
- C.revolutions per minute
- D.cycles per second
- A.the formation of sulfuric acid
- B.a decrease in lube oil viscosity
- C.a decrease in cooling water pH
- D.a thermostat failure
- A.crown and skirt
- B.liner and jacket
- C.ring and groove
- D.jacket and block
