单选题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?（）Aa working cycleBthe operationCtwo fuel injectionsDevents
单选题
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
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