单选题Combustion knock will most likely occur as a result of using a fuel with（）Alow ignition qualityBa high volatilityClow ignition delayDa high cetane number
单选题
Combustion knock will most likely occur as a result of using a fuel with（）
A
low ignition quality
B
a high volatility
C
low ignition delay
D
a high cetane number
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