单项选择题
A.fuel pump failure
B.fan motor failure
C.increased feedwater consumption
D.decreased boiler efficiency
单项选择题 The highest pressure in any closed diesel engine freshwater cooling system is at the （）.
单项选择题 The lube oil cooler is located after the lube oil filter in order for （）
单项选择题 In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?（）