A disadvantage of a four-stroke/cycle diesel engine is （）<br>A:higher working temperature of piston and cylinder<br>B:the use of scavenge ports<br>C:fewer power strokes per revolution of the crankshaft<br>D:part of the fuel is burned as the piston is moving away from top dead center

A disadvantage of a four-stroke/cycle diesel engine is （）
A:higher working temperature of piston and cylinder
B:the use of scavenge ports
C:fewer power strokes per revolution of the crankshaft
D:part of the fuel is burned as the piston is moving away from top dead center

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