单选题

If there is no hydraulic power to extend the nose gear, the weight of the gear and the airstream pushes the nose gear into the extended position.

AA. 如果没有液压动力放下前起落架，起落架的重量和气流会将其推至放下位。

BB. 如果液压动力未将前起落架放下，起落架的重量和重力会将其放下。

CC. 液压动力可以放下前起落架，起落架的重量和气流也可以将其推至放下位。

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正确答案：A （备注：此答案有误）

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