题目内容
On any _____ gear aircraft, lowering the landing gear is part of the pilot's landing checklist.
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Pilot’s landing checklist includes items such as setting the flaps, propeller and _____ for landing.
Small aircraft are equipped with warning lights to _____ the status of the landing gear.
The warning lights on small retractable landing gear aircraft may change colors from red to _____ to green depending on the different statuses of the landing gear.
There are warning systems on large aircraft to show whether the landing gear is up, in _____, or down.
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