单项选择题
A.check the air filter for obstruction
B.check for an exhaust leak
C.check the exhaust temperature
D.secure the engine
单项选择题 Clogged or partially obstructed exhaust ports on a diesel engine can cause（）
单项选择题 A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）
单项选择题 Which of the listed failures, occurring in an automated diesel generator system, should cause an audible alarm at the engine room control station?（）