• 2022-06-03
    力F作用在OABC平面内,x轴与OABC平面成q 角(q = 90°),如图,则力F对三轴之矩为( )。[img=169x144]17e0ae97851da76.jpg[/img]
    A: Mx = 0,My = 0,Mz≠0;
    B: Mx = 0,My≠0,Mz = 0;
    C: Mx≠0,My = 0,Mz = 0;
    D: Mx≠0,My = 0,Mz≠0。