单选题Which of the following represents the significance the fuel oil cetane number?（）AThe cetane number has no affect on injection lagBThe cetane number is an indication of the fuel’s viscosityCIgnition lag is reduced with fuels having a high cetane numberDThe cetane number is of little significance in the combustion
单选题
Which of the following represents the significance the fuel oil cetane number?（）
A
The cetane number has no affect on injection lag
B
The cetane number is an indication of the fuel’s viscosity
C
Ignition lag is reduced with fuels having a high cetane number
D
The cetane number is of little significance in the combustion
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