• 2022-06-01
    Among the following conclusions, the correct one is ____________.[img=415x210]1802e8730f6b36b.jpg[/img]
    A: The system is unstable.
    B: Link 2 is a redundant restraint.
    C: O is an instantaneous joint.
    D: O is not an instantaneous joint.
    E: The system is stable with no redundant restraints.
    F: The system is stable with 1 redundant restraints.
    G: The system is instantaneously unstable.