7.如图正四面体的棱长均为且平面于a点bcd均在平面外且在平面同一侧则点b到平面的距离是 A. B. C. D.——青夏教育精英 Template




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tomski7.如图正四面体的棱长均为且平面于a点bcd均在平面外且在平面同一侧则点b到平面的距离是 a. b. coloring