Unit 1 Preflight Briefing Unit 2 Preflight Check Unit 3 Boarding & Greetings Unit 4 Before Take-offⅠ Unit 5 Before Take-offⅡ Unit 6 Before Take-oftⅢ Unit 7 Passenger Comfort Unit 8 Beverage Service Unit 9 Meal ServiceⅠ Unit 10 Meal SerVfceⅡ Unit 11 Entertainment Service Unit 12 Duty-free Sales Unit 13 First Aid Unit 14 Safety & EmergencyⅠ Unit 15 Safety & EmergencyⅡ Unit 16 Delay Unit 17 Diversion & Transfer Unit 18 Turbulence Unit 19 EnquiriesⅠ Unit 20 EnquiriesⅡ Unit 21 Pre-Ianding Check Unit 22 After Landing 單元練習(xí)參考答案