更多"Machinery driving fuel oil transfer"的相关试题:
[单项选择]Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.
A. cold corrosion of the nozzles
B. fuel viscosity for better atomization
C. carbon accumulation on the nozzles
D. fuel detonation in the cylinders
[单项选择]When separating fuel oil in oil separator, the separating quantity is（） of the real quantity.
A. 100%
B. 80%
C. 1/2
D. 1/3
[单项选择]
When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（）
Ⅰ.filtering
Ⅱ.settling
A. Ⅰ only
B. Ⅱ only
C. either Ⅰ or Ⅱ
D. neither Ⅰ or Ⅱ
[单项选择]Diesel engine lube oil diluted with fuel oil is indicated by（）
A. decreased viscosity
B. decreased pour point
C. increased flash point
D. increased viscosity
[单项选择]In a commonly used 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 settling tank
C. an expansion tank
D. a double bottom tank
[单项选择]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
[单项选择]Diesel engine fuel oil contamination often results in （）
A. governor malfunctions
B. fuel injection system malfunctions
C. high cylinder lube oil temperatures
D. low intake temperatures
[单项选择]One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against（）
A. flattening of the bowl neoprene O-rings
B. operation within the explosive rang of the fuel
C. excessive purifier operating pressures
D. excessive oil viscosity
[单项选择]The quality of the fuel oil and lube oil （）, Im afraid.
A. has much to do with the operation of the engine and its life
B. have much to do with the operation of the engine and its life
C. has much doing with the operation of the engine and its life
D. have much doing with the operation of the engine and its life
[单项选择]Fuel oil contamination of an auxiliary diesel engine lube oil can result in（）
A. an increased flash point
B. higher lube oil pressures
C. an increased viscosity
D. lower lube oil pressures
[单项选择]The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means （）
A. join with
B. mix
C. be equal to
D. be constant
[单项选择]Which of the following fuel oil characteristics establishes the danger point when transferring, pumping, and firing procedures are concerned?（）
A. Fire point
B. Flash point
C. Specific gravity
D. viscosity
[单项选择]The viscosity regulator controls the fuel oil temperature （） provide oil at the correct viscosity for combustion.
A. in order that
B. because of
C. in order to
D. owing to
[单项选择]Maintaining the proper fuel oil temperature will result in （）
A. the elimination of valve wear
B. improved atomization
C. a decrease in cylinder blow-by
D. an increase in cylinder blow-by
[单项选择]The minimum fuel oil delivery pressure required for diesel engine injection depends primarily on the（）
A. degree of cylinder air turbulence
B. firing pressure in the engine
C. quality of fuel to be injected
D. duration of the ignition delay period
[单项选择]Fuel oil transfer systems used onboard diesel propelled vessels are required to have （）.
A. two fuel oil transfer pumps provided where one is to be independent of the main engine
B. two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engine
C. engine driven transfer pumps and only used in constant speed applications
D. the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
[单项选择]Fuel oil discharged to the diesel engine cylinder is atomized at the （）
A. turbocharger
B. injection nozzle tip
C. carburetor
D. fuel oil pump
[单项选择]When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
A. filter to remove the fuel oil
B. use the settler to remove the fuel oil
C. remove the fuel oil by centrifuging
D. drain and then renew the lube oil supply
