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
单项选择题 When a diesel engine compression pressure is checked, the indicator is connected to the （）
单项选择题 Diesel engine mufflers accomplish noise reduction by （）
单项选择题 An indication of an overloaded main propulsion diesel engine is （）
