A.Combustion gases flow through the tubes
B.Flames impinge on the tubes
C.Combustion occurs in the tubes
D.Water flows through the tubes
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A.slight acidity
B.slight alkalinity
C.excessive alkalinity
D.excessive acidity
A.cold corrosion of the nozzles
B.fuel viscosity for better atomization
C.carbon accumulation on the nozzles
D.fuel detonation in the cylinders
A.the size of the holes in the fuel nozzle
B.timing of the pump
C.supply pressure to the pump
D.shape of the combustion chamber
A.fuel injectors
B.exhaust valves
C.intake valves
D.all of the above
A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）
(1) scavenging air is cooling the exhaust gases
(2) exhaust cycle time is longer
A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) nor (2)
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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?（）
The minimum speed an engine must attain before ignition can occur depends upon （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
Routine monitoring of a diesel engine should include （）.
Diesel engine control can be obtained by the bridge （）.
To determine if the lube oil filter elements need changing, （）.
Lube oil cannot be efficiently filtered if its （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
Maximum horsepower of a diesel engine is attained （）.
In a simple mechanical governor, the （）.