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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

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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