Question 1 of 50
Walking Character
2%
Princess Right

航空機の初期において、短波ラジオの重要な用途は何でしたか？

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A 気象パターンの追跡
B 航空機ナビゲーションの誘導
C パイロットと地上管制の連携
D 乗客のための音楽再生
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