單項(xiàng)選擇題A waste heat boiler is installed on some diesel propelled vessels to （）.

A.provide steam for emergency propulsion
B.provide steam for the turbo-generator
C.heat the waste water tanks
D.steam for warming engines


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2.單項(xiàng)選擇題An electric heater built into some smaller diesel engines is used to （）.

A.raise lube oil viscosity for easier starting in cold weather
B.increase air inlet temperature
C.increase compression ratio
D.increase jacket water temperature for easier starting in cold weather

3.單項(xiàng)選擇題A SECONDARY function of a waste heat boiler is to （）.

A.reduce engine exhaust noise
B.reduce engine back pressure
C.increase engine cycle efficiency
D.increase turbocharger efficiency

4.單項(xiàng)選擇題Fuel injection systems meter fuel, atomize fuel, and （）.

A.create turbulence in the combustion chamber
B.aid in completing cylinder scavenging
C.inject fuel at the proper time
D.minimize fuel penetration into the cylinder

5.單項(xiàng)選擇題Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the （）.

A.exhaust gas temperature system
B.exhaust load system
C.constant or pulse pressure system
D.constant volume system