A.the formation of sulfuric acid
B.a decrease in lube oil viscosity
C.a decrease in cooling water pH
D.a thermostat failure
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A.increased fuel consumption
B.increased feed water consumption
C.fuel pump failure
D.combustion control system failure
A.Injection pressures
B.Control air supply pressure
C.Cooling water flow through after-coolers
D.Lube oil temperature
A.treating with oxygen scavengers
B.securing the boiler and giving it a blowing down
C.increasing the pH
D.reducing the phosphate level
A.caustic embrittlement of the boiler metal
B.acidic corrosion of the boiler metal
C.hard scale deposits on the boiler tubes
D.etching of the heat exchange surfaces
A.assist in a quick cutoff of fuel injection
B.allow oil backflow from the injector to the helix
C.reduce fuel oil pressure between injection strokes
D.meter the quantity of fuel delivered
最新試題
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A thrust bearing is used with a propulsion diesel engine to （）.
Proper filtering and straining of fuel oil is important because the （）.
The function of diesel engine piston compression rings is to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
Lube oil cannot be efficiently filtered if its （）.
Diesel engine control can be obtained by the bridge （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
To determine if the lube oil filter elements need changing, （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.