单项选择题
What is one effect of running a diesel engine at too cool a temperature? （）
A.Buildup of sludge in the lubricating system B.Excessive fuel consumption C.Severe heat stresses on mechanical parts D.Foaming of the lubricating oil
单项选择题 What is an advantage of diesel over steam turbine propulsion? （）
单项选择题 What is an advantage of a steam turbine over a diesel for the main propulsion?（）
单项选择题 What does a pyrometer measure on a diesel engine? （）
