题目内容

前三点式起落架的主起落架在后，转向轮在前

A. 对
B. 错

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固定翼无人机相比旋翼无人机来说，对跑道的要求低，使用范围广泛（）

A. 对
B. 错

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A. Don't to be
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A. Try
B. To try
C. Trying
D. Tried