When will the passengers be checked in for their flight?__________ hours before

游客2023-09-22  12

问题 When will the passengers be checked in for their flight?
__________ hours before departure.
[br] Who will check the passenger’s ticket?
A ____________.

选项

答案 passenger service agent

解析 本题问谁为旅客办理登机手续。见文章第二段第一句。
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