单项选择题
A.governor malfunctions
B.fuel injection system malfunctions
C.high cylinder lube oil temperatures
D.low intake temperatures
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 （）
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 （）