• 2022-06-29
    5、补全正四棱锥的三面投影,正确的选项是( )。[img=153x260]180348fb735e93e.jpg[/img]
    A: [img=287x307]180348fb7ec307c.jpg[/img]
    B: [img=292x317]180348fb89ec0a3.jpg[/img]
    C: [img=288x311]180348fb96123ec.jpg[/img]
    D: [img=282x311]180348fba126002.jpg[/img]
  • B

    内容

    • 0

      图中的力F对O点的矩为多少?[img=744x149]18035d1c6fd7961.png[/img][img=685x233]18035d1c7ab1df4.png[/img][img=735x315]18035d1c859b5d7.png[/img] A: 0,Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0

    • 1

      图中的力F对O点的矩为多少?[img=744x149]1802f3f8b9285a5.png[/img][img=685x233]1802f3f8c4edd9d.png[/img][img=735x315]1802f3f8d15814b.png[/img] A: 0,Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0

    • 2

      图中的力F对O点的矩为多少?[img=744x149]1802f3f9672e5e5.png[/img][img=685x233]1802f3f9714e5f8.png[/img][img=735x315]1802f3f97c72df1.png[/img] A: 0,Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0

    • 3

      图中的力F对O点的矩为多少?[img=744x149]1802f3fdb0a46da.png[/img][img=685x233]1802f3fdbc626cc.png[/img][img=735x315]1802f3fdc7077df.png[/img] A: 0,Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0

    • 4

      图中的力F对O点的矩为多少?[img=744x149]17de6ed8f47003d.png[/img][img=685x233]17de6ed905536de.png[/img][img=735x315]17de6ed9117f007.png[/img] A: 0,Fl, Fb B: Fl, Fb,0 C: Fb,Fl,0 D: Fl,Fb,0