Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）<br>A:electronic ignition system<br>B:compression of air by the piston<br>C:friction in the fuel injector<br>D:fuel oil bearing system

Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the （）
A:electronic ignition system
B:compression of air by the piston
C:friction in the fuel injector
D:fuel oil bearing system

出自：海船船员证

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