单项选择题
A.faulty combustion
B.excessive ring temperature
C.over lubrication
D.all of the above
单项选择题 The high air velocity leaving the compressor of an exhaust gas turbocharger is converted to pressure in the （）
单项选择题 When attempting to restart a warm high-speed engine, which of the following reactions can you expect?（）
单项选择题 An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in （）