Which factor of the following affects not only the fuels combustion but also the engine’s maintenance?（）<br>A:cetane number<br>B:flash point<br>C:viscosity<br>D:setting point

Which factor of the following affects not only the fuels combustion but also the engine’s maintenance?（）
A:cetane number
B:flash point
C:viscosity
D:setting point

出自：海船船员证

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