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航空器靠泊使用的反光标志物高度不小于（倍），重量能防止5级风吹移。

发布于 2021-02-26 19:11:48

【单选题】
A 30厘米
B 50厘米
C 40厘米
D 60厘米

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这家伙很懒，什么也没写！

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