In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?()
A、Bed plate
B、Column
C、Entablature
D、Tie rod
A、Bed plate
B、Column
C、Entablature
D、Tie rod
A、A.Cross ahead of the stand-on vessel B、B.Make a large course change to starboard C、C.Slow your vessel D、D.Back your vessel
A、quantity of air it takes in and retains in the cylinders during a given time period B、proportion of trapped air that is utilized in the combustion process C、thermodynamic efficiency of the engine cycle D、all of the above
A、gives up large amount of heat B、gives off large amount of heat C、gives up large amount of steam D、gives off large amount of steam
A、have been largely achieved B、have largely not been achieved C、have been achieved in some significant areas D、have not been achieved at all