A.moisture
B.dirt
C.acid
D.air
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A.relieve excess fuel oil pressure during the “off” fire cycle
B.admit water to the dry pipe
C.throttle the forced draft fan output for proper combustion
D.reduce excess steam pressure in the boiler
A.60 to75
B.80 to 95
C.100 to 115
D.120 to 135
A.heat conduction into the injected fuel oil
B.heat conduction into the water jacket wall
C.water circulation through passages in the holder
D.fuel oil circulation through passages in the holder
A.slightly acidic condition
B.slightly alkaline condition
C.overtreatment of water
D.neutral condition of water
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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In a simple mechanical governor, the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
The main purpose of the piston oil scraper rings is to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
The function of diesel engine piston compression rings is to （）.
Lube oil cannot be efficiently filtered if its （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
Routine monitoring of a diesel engine should include （）.