A.check and regulate the water level
B.close the air cock once fires are lit
C.blowdown the gage glass
D.crack the steam stop to assure protective steam flow
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A.Maintains a constant head on the system
B.Reduces the likelihood of air or steam pockets formation
C.Provides a low pressure point for the addition of makeup cooling water
D.All of the above
A.brass
B.copper
C.iron
D.monel metal or stainless steel
A.reduce water temperature
B.reduce water turbulence
C.provide an air cushion
D.allow for an increase in water volume as the engine warms up
A.changing filter elements would not interrupt engine operation
B.filtering occurs twice in each pass of oil through the system
C.clogging will not occur
D.dropping pressure is half of that through a single filter unit
A.decrease in maximum cylinder pressure
B.increase in ignition lag
C.decrease in fuel consumption per horsepower-hour
D.decrease in exhaust manifold pressure
最新試題
Proper filtering and straining of fuel oil is important because the （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
To determine if the lube oil filter elements need changing, （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
Routine monitoring of a diesel engine should include （）.
Diesel engine control can be obtained by the bridge （）.
In using reduction gears to obtain efficient propeller speeds, （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）