题目内容
In shipping, great care is needed for _____ goods.
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Passengers usually board the aircraft at areas called _____ located within the terminal.
At the airport, passengers need to get their boarding pass and checking in baggage at the ticket and luggage _____.
People _____ in air traffic control may monitor aircraft movement in control tower.
_____ aircraft movement both in the air and on the ground is of great importance.
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