For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because_____.

A、
A、ithasalongerpowerstroke;
B、
B、moreairgetsintothecylindereachstroke;
C、
C、itdevelopstwiceasmanypowerstrokesatthesamespeed;
D、
D、highercombustionpressureisdeveloped