单项选择题
A.high lube oil temperature B.low lube oil temperature C.excessive cylinder cooling D.high air injection pressure
In a diesel engine exhaust system, the cooling of the e...
单项选择题In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in （）
A.increased engine back pressure B.sulfuric acid corrosion C.surface pitting of the turbocharger D.moisture impingement on the turbocharger compressor blade
When a diesel engine compression pressure is checked, t...
单项选择题When a diesel engine compression pressure is checked, the indicator is connected to the （）
A.cylinder exhaust ports B.injection line C.cylinder indicator cock D.banjo oiler line
Diesel engine mufflers accomplish noise reduction by （）...
单项选择题Diesel engine mufflers accomplish noise reduction by （）
A.reducing exhaust gas velocity B.increasing the frequency of gas vibration C.the use of long head pipes D.the use of zinc electrodes
