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單項(xiàng)選擇題

Why will a turbocharger diesel engine produce black smoke if excessive additional load is applied too quickly?()

A.Exhaust energy would draw excess air
B.The inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increase
C.Exhaust gas pumping losses are increased due to turbine windage
D.Exhaust gas back pressure falls slightly due to increased nozzle action

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