• 2022-06-06
    球面[img=127x26]180322db85013eb.png[/img]与平面[img=74x20]180322db8d52dd3.png[/img]的交线在[img=28x18]180322db964e1aa.png[/img]平面上投影曲线方程为( ).
    A: [img=152x51]180322dba0a65f2.png[/img]
    B: [img=136x26]180322dba90dbc7.png[/img]
    C: [img=132x53]180322dbb186611.png[/img]
    D: [img=110x51]180322dbb921619.png[/img]