单项选择题
A.increased carbon buildup B.burning of intake valves C.excessive firing pressures D.increased fuel consumption
Turbocharged four-stroke/cycle diesel engines utilize v...
单项选择题Turbocharged four-stroke/cycle diesel engines utilize valve overlap for（）.
A.improving cylinder scavenging B.preheating the combustion chamber C.reducing air charge density D.preventing valve wear
Operating a propulsion diesel engine at less than 30% o...
单项选择题Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in （）.
A.decreased fuel consumption per brake horsepower B.more complete cylinder scavenging C.extended valve life D.carbon formation on combustion chamber surfaces
A dirty fuel oil filter element can be detected by （）A....
单项选择题A dirty fuel oil filter element can be detected by （）
A.Visual inspection of the element B.the pressure drop cross the filter C.high fuel oil tank temperature D.increase flow rate from the filter
