单项选择题
A.reduce the engine driven fuel pump outlet pressure
B.retard the fuel injector timing to reduce power
C.increase the fuel rack setting
D.reduce the load on the engine
单项选择题 A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.
单项选择题 An increased pressure differential between the inlet and outlet of a strainer usually indicates the strainer is （）
单项选择题 Which of the following problems can cause fluctuating pressures in the closed cooling system of a main propulsion diesel engine?（）