单项选择题
White smoke issuing from the exhaust of an auxiliary diesel engine valve opening （）
A.the engine is overloaded B.the engine is cold C.there is too much lube oil in the cylinders D.the turbocharger is fouled
单项选择题 White smoke exhausting from a diesel engine can result from （）
单项选择题 White smoke exhausting from an operating diesel engine may indicate （）
单项选择题 The over-speed trip installed on most diesel engine will stop the engine by shutting off the （）
