A.acidity has increased
B.viscosity has decreased
C.demulsibility has improved
D.foaming is guaranteed to occur
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A.increase the fuel oil temperature
B.decrease the fuel oil temperature
C.decrease the fuel oil supply pressure
D.increase the air supply
With regards to a diesel engine crankcase explosion, the most violent is the（）
(1) primary explosion
(2) secondary explosion
A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) or (2)
A.increased heat transfer
B.fireside erosion
C.high steam demand
D.overheated tubes
A.gas composition
B.gas temperature
C.pressure
D.timing
A.push rods
B.chain drives
C.rocker arms
D.flywheels
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If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
To determine if the lube oil filter elements need changing, （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
What is the function of the thrust bearing?（）
Lube oil cannot be efficiently filtered if its （）.
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 （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
In a simple mechanical governor, the （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.