截平面和圆锥体轴线的相对位置不同，会产生的截交线有( )。

A、<span style="FONT-FAMILY: 宋体; BACKGROUND: white; FONT-SIZE: 14px; TEXT-DECORATION: none">两直线</span>

B、<span style="FONT-FAMILY: 宋体; BACKGROUND: white; FONT-SIZE: 14px; TEXT-DECORATION: none">椭圆</span></p><p>&nbsp;</p>

C、<span style="FONT-FAMILY: 宋体; BACKGROUND: white; FONT-SIZE: 14px; TEXT-DECORATION: none">圆</span>

D、<span style="BACKGROUND: white; FONT-SIZE: 14px; TEXT-DECORATION: none">抛物线<br/><br/></span>