• 2022-06-03
    力F的作用线在OABC平面内,如图所示,则F对Ox、Oy、Oz轴之矩为()
    A: Mx(F)≠0My(F)≠0Mz(F)≠0
    B: Mx(F)≠0My(F)≠0Mz(F)=0
    C: Mx(F)=0My(F)≠0Mz(F)≠0
    D: Mx(F)≠0My(F)=0Mz(F)≠0