单项选择题
Diesel engine cylinder head test cocks are used to （）
A.check cylinder lubrication B.connect the pressure indicator pressure C.test cylinder heads D.connect the exhaust gas pyrometers
单项选择题 Which of the following statements is correct regarding a turbocharged four-stroke/cycle diesel generator?（）
单项选择题 Lubricating oil viscosity in an operating diesel engine can be reduced by（）
单项选择题 A defective injector nozzle in a propulsion diesel engine can cause（）
