单选题When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average （）Aair quantity aspiratedBfuel injection pressureCcombustion pressure on the power strokeDcompression on the compression stroke
单选题
When a diesel engine is operate at partial load, as compared to full load ,a decrease will occur in the average （）
A
air quantity aspirated
B
fuel injection pressure
C
combustion pressure on the power stroke
D
compression on the compression stroke
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