单项选择题
A.high lube oil temperature
B.blue smoke
C.the engine to stop
D.piston seizure
单项选择题 Which of the following operating procedures should be carried out immediately after any diesel engine is started?（）
单项选择题 Which of the following conditions would cause carbon deposits to form in the piston ring belt of a diesel engine?（）
单项选择题 The high air velocity leaving the compressor of an exhaust gas turbocharger is converted to pressure in the （）