单项选择题
A.cooling water pump B.nozzle cooling passages C.cylinder jackets D.heat exchanger
Cylinder lubrication oil for low speed main propulsion ...
单项选择题Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.
A.the power stroke B.the compression stroke C.low load operation only D.periods of standby
The speed of the camshaft in a two-stroke/cycle diesel ...
单项选择题The speed of the camshaft in a two-stroke/cycle diesel engine, running at 950 RPM, is （）.
A.475 RPM B.950 RPM C.1900 RPM D.2400 RPM
In a closed diesel engine freshwater cooling system, th...
单项选择题In a closed diesel engine freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the （）.
A.suction pressure regulator B.thermostatic bypass valve C.sea water temperature D.water level in the expansion tank
