更多"Problems may （）"的相关试题:
[单项选择]Which of the following problems may occur when using fuel oil with a high sulphur content?（）
A. Injection lag
B. Lube oil dilution
C. Pre-ignition
D. Corrosion
[单项选择]Which of the following problems may occur if the clearance between a piston and cylinder liner is insufficient?（）
A. Excessive wear
B. Scuffing of the liner
C. Piston seizure
D. All of the above
[单项选择]Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?（）
A. The amount of fuel injected will be increased
B. The start of injection will be retarded
C. The nozzle will permit fuel to dribble
D. The spray pattern will be distorted
[单项选择]The most common diesel engine fuel system problems are caused by （）.
A. incorrect adjustments
B. dirty fuel
C. broken fuel lines
D. excessive vibration
[单项选择]Which of the following problems represent one possible cause of high lube oil consumption in a four stroke diesel engine?（）
A. Worn intake valve guides
B. Pitted pre-combustion chambers
C. Loose valve tappets
D. High exhaust back pressure
[单项选择]Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）
A. Defective temperature controls in the system
B. Cavitation in the cooling water pump
C. Opened vent in the cooling system
D. Restricted water passages in the engine
[单项选择]Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?（）
A. Lube oil passing through the system
B. Moisture or foreign matter collecting at the valve seat and orifice
C. Variable spring tension caused by the changing temperature
D. Frost on the liquid line
[单项选择]Problems with the diesel engine fuel injection pump are usually caused by（）
A. improper adjustment
B. contaminated fuel
C. kinked fuel lines
D. excessive engine vibration
[单项选择]（）may be laid ready for the cargo or may just be put in bundles ready for the stevedores to lay out as the cargo is loaded.
A. Wedge
B. Dunnage
C. Shore
D. Store
[单项选择]The major cause of problems occurring with fuel injection equipment is（）
A. incorrect replacement of barrels and plungers of jerk pumps
B. overheating of the nozzle orifices
C. cracked pump housings
D. dirt in the fuel
[单项选择]Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after-cooled diesel engine?（）
A. Faulty turbocharger turbine diffuser ring
B. Faulty turbocharger compressor ring
C. Insufficient cooling water flow
D. Clogged air intake filters
[单项选择]Which of the problems listed could be indicated if a sight glass in the refrigerant liquid line is full of bubbles?（）
A. Proper refrigerant charge
B. Faulty expansion valve
C. Insufficient refrigerant
D. Solenoid valve stuck open
[单项选择]Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger?（）
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
[单项选择]Which of the following problems could cause air to blow out through the inlet air filter of a running compressor?（）
A. Excessive compression in the cylinder
B. A broken intake valve
C. A dirty inlet filter element
D. An improperly adjusted discharge valve
[单项选择]Which of the following problems would be the probable cause for the faulty operation of a reciprocating air compressor suction valve?（）
A. Carbon build up in the piston ring belt
B. Faulty operation of a cylinder un-loader
C. Compressor operation in an area of high relative humidity
D. Lifting of intercooler rebel valve
[单项选择]Which of the listed problems could produce a high absolute pressure within a flash type evaporator?（）
A. Production of high salinity distillate
B. Seawater feed temperature below 165℃
C. A leak in the first stage demister
D. A cracked distillate pump vent line
[单项选择]Which of the listed problems would be indicated by an accumulation of water in one cylinder, in addition to the crankcase of an idle diesel engine?（）
A. Excessive cylinder liner
B. water in the fuel system
C. Cracked cylinder liner
D. Leaking lube oil cooler
[单项选择]Which of the following problems will occur if the internal drain at either end of a hydraulic, two-way, spool-type directional control valve cylinder were to become plugged?（）
A. The reservoir would become vapor bound
B. The valve would be placed in hydraulic lock
C. The spring loaded relief ports would open
D. The buffering chambers would be unable to function
