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Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery from （）.
A . within the space concerned
B . outside the space concerned
C . the throttle station
D . within the fire room
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For a L√Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will （）.
A . be interrupted
B . move downwards
C . move outwards
D . retain original positio
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As the plunger moves up, the ports are closed and the fuel （） and delivered to the injector nozzle at very high pressure.
A . being compressed
B . to be pumped up
C . is pressurized
D . are built u
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The vapors given off by heated fuel oil are flammable, explosive, and （）
A . lighter than air
B . heavier than air
C . odorless
D . nontoxic
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To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?（）
A、bilge tank
B、sludge tank .
C、overflow tank
D、oil collecting tank
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The pressure difference before and after the lube oil filter indicates （）the filter should be cleaned.
A . when
B . how
C . where
D . whether
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The treatment of the fuel oils involves storage, heating, filtering and（）
A . centrifuging
B . pressurizing
C . atomization
D . igniting
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Seamless mild steel is used for steam (also copper for moderate pressure and temperature), h-pair, feed discharge and all oil fuel pressure pipingsAccording to the above sentence, which of the following statements is not true?（）
A . Both seamless mild steel and copper may be used for middle pressure steam
B . "hpair" means high pressure air
C . The feed piping of the boilers can be made of seamless mild steel
D . All oil pipings are made of mild steel
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The vapors given off by heated fuel oil are heavier than air and are（）.
A . odorless
B . explosive
C . nontoxic
D . visible
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The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as （）.
A . injection
B . penetration
C . atomization
D . compressio
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The soot blowers are operating in the oil fuel boiler the air/fuel ratio must （） throughout the action, and blowers greased after use.
A . be increased
B . be decreased
C . remain constant
D . either be increased or remain constant
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Which of the following operations need to be entered on the Oil Record Book Part I? （） (1) Ballast of fuel oil tanks (2) Condition of oil discharge monitoring and control system
A . （1）only
B . （2）only
C . both（1）and（2）
D . neither（1）nor（2）
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Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.
A . have nothing to do with
B . having nothing to do with
C . have much to do with
D . having much to do with
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Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
A . double bottom fuel oil tank temperature
B . heater supply steam flow
C . pressure of the fuel supplied to the burners
D . attemperator steam flow in the heater discharge circuit
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The oil pressure and flow from each bearings can be checked when（）
A . the lubricating pumps are stopped and the access doors are opened
B . the lubricating pumps are running and the access doors are opened
C . the engine is running and the access doors are closed
D . the engine is stopped and the access doors are closed
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A dirty fuel oil filter is can be detected by （） Ⅰ.fuel oil analysis Ⅱ.observing the pressure drop across the filter
A . Ⅰonly
B . Ⅱonly
C . eitherⅠorⅡ
D . neitherⅠnor
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After taking on fuel oil, the hoses should be disconnected and （）.
A . draped over the fantail to dry out
B . drained over the side and washed out
C . drained into the bilges and washed out
D . drained into buckets or fuel tank
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To avoid excessive pressures in the fuel oil filling system during bunkering, you should （）.
A . close the tank filling valves quickly
B . top off all tanks at the same time
C . rill completely all tanks to less than 95% full
D . reduce the loading rate when topping off
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The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.
A . has begun
B . takes place
C . occurs
D . happe
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The replacement piping for diesel engine high pressure fuel systems must be the same length and diameter as the original piping to （）.
A . avoid unnecessary pints inventory
B . keep torsional vibration constant
C . use existing supports and braces
D . maintain specified injection characteristic
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Proper filtering and straining of fuel oil is important because the （）.
A . fuel oil pump will over-speed if dirt is not removed
B . fuel oil transfer pumps cannot tolerate small amounts of dirt in the oil
C . fuel injectors may be damaged by foreign particles in the fuel oil
D . dirty fuel will clog the intake air filter
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Fueling results in the collection of waste oil in drip pans and containers. Which is an approved method of disposing of the waste oil? （）
A . Draining it overboard when the vessel gets underway
B . Placing it in proper disposal facilities
C . Adding sinking agents and discharging it into the water
D . Mixing it with dispersants before draining it overboard
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In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.
A . a service tank
B . a collecting tank
C . a sump
D . a settling tank
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For a L.Opurifier, if the back pressure of the oil outlet is too high, the interface between oil and water in the bowl will _____.
A.be interrupted
B.move downwards
C.move outwards
D.retain original position
