已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
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已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
O=6/13 △=17/65
已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
已知O+O+O+△+△=5.4 O+O+△+△+△=5.6 求O=?△=?
O=6/13 △=17/65