单项选择题
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
单项选择题 The most common diesel engine fuel system problems are caused by （）.
单项选择题 The power developed by a large slow-speed main propulsion diesel engine is dependent upon the （）
单项选择题 Dirt in a fuel oil system of a diesel engine can cause （）
