When a cone is cut by a plane, the intersection of the conical surface of the cone and the plane could be_______.当圆锥被平面切割时,圆锥的圆锥表面和平面的截交线可能为______。 A: Line B: Circle C: Ellipse D: Hyperbola E: Parabola
When a cone is cut by a plane, the intersection of the conical surface of the cone and the plane could be_______.当圆锥被平面切割时,圆锥的圆锥表面和平面的截交线可能为______。 A: Line B: Circle C: Ellipse D: Hyperbola E: Parabola
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