Who has turned on the Fasten Seat Belt sign and why？ 2) What electronic device must be tur
ned off for the full duration of the flight？ 3) What kind of electronic devices can be turned on during the flight and when are the passengers allowed to do so？ 4) Why is smoking not allowed on the flight？ 5) Whom can passengers turn to for help if they have any questions during the flight？
【参考答案】1) The Fasten Seat Belt sign is turned on by the flight crew......
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