A.Injection pressures
B.Control air supply pressure
C.Cooling water flow through after-coolers
D.Lube oil temperature
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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
A.10
B.7
C.4
D.1
A.open air-box drains
B.loss of cooling water to the diffuser
C.gradual fouling of the air filters
D.improperly timed exhaust valves
最新試題
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
Combustion knock occurring in a diesel engine can be caused by （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
In a simple mechanical governor, the （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
Lube oil cannot be efficiently filtered if its （）.