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如图所示,将一副三角板叠放在一起,使直角顶点重合,且∠AOD=2∠BOC,则∠AOC等于( ) [Failed to download image : http://192.168.0.10:8086...
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如图所示,将一副三角板叠放在一起,使直角顶点重合,且∠AOD=2∠BOC,则∠AOC等于( )
[Failed to download image : http://192.168.0.10:8086/QBM/2018/5/3/1937315075809280/1940872989007872/STEM/03554052899246dcb7e3d6b387c00229.png]
A. 45° B. 30° C. 25° D. 20°
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