The amber DUAL BLEED Light is illuminated before starting engines. What should you do?
发布于 2021-02-03 04:41:54
【单选题】 A A.Nothing. This is normal condition before engine start. B B.Do not start the engines, call Maintenance. C C.Do not start the engines, check MEL. D D.Shut down the APU and use a pneumatic ground cart for engine start.
