• 2022-06-04
    已知轴线正交的圆柱和圆锥公切于一圆球面,正确的投影是:( )
    A: [img=147x136]18038d781279b72.png[/img]
    B: [img=136x134]18038d781cca201.png[/img]
    C: [img=148x145]18038d7829b3856.png[/img]
    D: [img=152x136]18038d78357fb3b.png[/img]