In a diesel engine, when the fuel is injected into the cylinder,（）<br>A:the piston is just coming upward from the bottom dead center<br>B:the piston has moved about one-fifth of the way up<br>C:the piston has moved most of the way up and almost reached the TDC<br>D:the piston has just past the TDC

In a diesel engine, when the fuel is injected into the cylinder,（）
A:the piston is just coming upward from the bottom dead center
B:the piston has moved about one-fifth of the way up
C:the piston has moved most of the way up and almost reached the TDC
D:the piston has just past the TDC

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