单项选择题

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

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单项选择题
The PRIMARY function of a waste heat boiler is to （）.

A.reduce engine exhaust noise
B.reduce engine back pressure
C.recover heat which otherwise would be lost
D.increase turbocharger efficiency
单项选择题
The PRIMARY function of a waste heat boiler is to （）

A.reduce engine exhaust noise
B.reduce engine back pressure
C.recover heat which otherwise would be lost
D.increase turbocharger efficiency
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