题干

经过抛物线 y=
1
4
x2
的焦点与圆 x2﹣4x+y2=0相切的直线方程为(   )

A:225x﹣64y+4=0或x=0

B:3x﹣4y+4=0

C:x=0

D:3x﹣4y+4=0或x=0

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答案(点此获取答案解析)

D

同类题4

阅读下文,完成各题。

土地

大地

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                                                                                           土地的深处