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第6课：平面截圆锥面
Author:
张中强
,
蔡永志
Topic:
Conic Sections
,
Geometry
平面截圆锥面，截得的形状有
Select all that apply
A
直线
B
圆
C
椭圆
D
双曲线
E
抛物线
Check my answer (3)
平面截圆锥面
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