Which of the followings may cause flight delay（）
A. bad weather
B. mechanical trouble
C. air traffic control
D. late arrival of passengers
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What are the main check-in ways（）
A. airport check-in counter
B. airport check-in counter
C. Wechat check-in
D. self-service check-in kiosk
Which of the followings doesn’t mean “随身行李”（）
A. checked baggage
B. carry-ons
C. hand baggage
D. cabin baggage
Which of the following services may not be offered by the carrier in the event of flight cancellation（）
A. drinks and meals
B. accommodation
C. reschedule a flight
D. chart a flight
_is not the necessary travel document when you go abroad（）
A. passport
B. visa
C. ID card
D. E-ticket itinerary
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