Whentofastentheseatbelt?
2022-09-27 21:49 空中乘务情境会话
When to fasten the seat belt?
A.for take-off
B.for landing
C.during air turbulence
D.whenever the Fasten Seat Belt sign is on
正确答案:for take-off;for landing;during air turbulence;whenever the Fasten Seat Belt sign is on