The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of eventsWhat does "which" mean in this sentence?（）<br>A:a working cycle<br>B:the operation<br>C:two fuel injections<br>D:events

The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of eventsWhat does "which" mean in this sentence?（）
A:a working cycle
B:the operation
C:two fuel injections
D:events

出自：海船船员证

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