单项选择题

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

<上一题目录下一题>

热门试题

单项选择题

What is the speed of the crankshaft in a four-stroke cycle engine when the camshaft is turning at 750 rpm?（）

A.375 RPM
B.500 RPM
C.750 RPM
D.1500 RPM

单项选择题

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