单项选择题
A.Lube oil is diluted and its viscosity is reduced
B.Sulfuric acid is formed
C.Bearings become pitted ad immediately fail
D.Valve stems develop sludge deposits
单项选择题 If a few injector spray holes become plugged, the result could be （）
单项选择题 The sludge tank installed in the diesel engine room is used to collect（） Ⅰ.sludge from the fuel oil settling tanks ad centrifuge Ⅱ.water that has been collected in the settling tank
单项选择题 A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）