• 2022-05-27
    直线[img=130x49]18039ca331c62e2.png[/img]在平面[img=144x22]18039ca33982189.png[/img]上的投影直线的方程为( ).
    A: [img=130x49]18039ca3449eb3e.png[/img]
    B: [img=153x49]18039ca35022b6e.png[/img]
    C: [img=129x49]18039ca35b194bf.png[/img]
    D: [img=129x49]18039ca366b6486.png[/img]