- 問題詳情:Flyingdevicescalleddrones(無人機)maybeoneofthemostimportanttechnologiesofthefuture.Thenumberofjobsforpeoplewhoknowhowtodesign,buildandcontrolthemisincreasing.Becauseofthisincrease,severalU.S.universitieshavestartedofferingdegreesinunmannedair...
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