A.The safety valve escape piping should be disconnected from the valve body and a blank inserted
B.The boiler vent valves should be opened
C.All handhole/manhole covers should be tightened up as much as possible to preclude any leaks
D.All of the above
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A.salinity is abnormally high
B.steam demand is too high
C.water level is abnormally low
D.feedwater flow is low
A.internal crankshaft passages
B.immersion in oil
C.splash lubrication
D.injection lubrication
A.Increases the sludge forming tendency of lube oil
B.Prevents the accumulation of combustible gases
C.Improves lube oil cooling
D.Improves cold weather starting
A.closing later
B.opening sooner
C.staying open for a shorter period of time
D.staying open for a longer period of time
A.prevents spark generation
B.removes combustible gases
C.determines the level of combustible gases
D.provides inert gas generation in crankcase
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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Proper filtering and straining of fuel oil is important because the （）.
What is the function of the thrust bearing?（）
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
A diesel engine piston ring face is in direct contact with the （）.
In using reduction gears to obtain efficient propeller speeds, （）.
In a simple mechanical governor, the （）.