In a diesel engine,（） works as working medium and changes the heat energy to mechanical energy, changes the reciprocating movement to rotary moment（）<br>A:fuel spray； the burning of the fuel<br>B:the burned gas mixture； connecting rod<br>C:medium shaft；crankshaft<br>D:the burned gas mixture； piston rod

In a diesel engine,（） works as working medium and changes the heat energy to mechanical energy, changes the reciprocating movement to rotary moment（）
A:fuel spray； the burning of the fuel
B:the burned gas mixture； connecting rod
C:medium shaft；crankshaft
D:the burned gas mixture； piston rod

出自：海船船员证

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