单项选择题
What does a pyrometer measure on a diesel engine? （）
A.Water temperature B.Water pressure C.Exhaust temperature D.Air box pressure
单项选择题 What condition will result in the automatic shutdown of a diesel engine? （）
单项选择题 Vessels required to be equipped with an approved backfire flame arrester are（）.
单项选择题 The ship has a diesel engine（）a supercharger.
