单选题Theoretical perfect combustion in a diesel engine yields by-products of （）.Aaldehydes and carbon dioxideBwater vapor and carbon monoxideCnitrogen and carbon monoxideDwater vapor and carbon dioxide
单选题
Theoretical perfect combustion in a diesel engine yields by-products of （）.
A
aldehydes and carbon dioxide
B
water vapor and carbon monoxide
C
nitrogen and carbon monoxide
D
water vapor and carbon dioxide
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