单选题The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.Ahas begunBtakes placeCoccursDhappens
单选题
The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.
A
has begun
B
takes place
C
occurs
D
happens
参考解析
解析：
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相关考题：
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单选题During working, when the piston is near the （）, the air ignites the fine spray of fuel.ATDCBDTCCBDCDBCD