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討論內容: A Second Class stamp social service essay 璽??The first, the most benign, would be something left on board, something not related to the aircraft itself,"??Aboulafia?? says.??"The second, and most likely perhaps, is mis-wiring, poor installation, bad retrofit璽??something unique to that particular aircraft. And then three is the one that people are still skittish about, which is that there璽??s some kind of system or technology on board that璽??s prone to failure. Hopefully it璽??s not that one.璽??

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