A.ensure penetration and distribution of the fuel in the combustion chamber
B.ensure the needle valve is flushed clean during each injection
C.prevent combustion gas blowback into the open needle valve
D.prevent reflected pressure waves when the needle valve closes
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A.slightly less than atmospheric pressure
B.approximately equal to exhaust manifold pressure at all times
C.that is widely fluctuating constantly
D.decreasing as engine load increases
A.volute pump
B.centrifugal pump
C.diaphragm pump
D.gear pump
A.fuel oil pressure
B.a cam operated follower
C.a spring-loaded pressure plate
D.timing gears keyed to the crankshaft
A.six consecutive starts
B.eight consecutive starts
C.ten consecutive starts
D.twelve consecutive starts
A.cylinder heads
B.exhaust valves
C.scavenging air
D.injectors
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Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
The function of diesel engine piston compression rings is to （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
The main purpose of the piston oil scraper rings is to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
Proper filtering and straining of fuel oil is important because the （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.