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.
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.
举一反三
- The following structural system is:[img=185x174]1803b7fb18ff3c4.jpg[/img] A: Stable without redundant restraint B: Stable with one redundant restraint C: Instantaneously unstable D: Stable with two redundant restraints
- The following structural system is:[img=204x70]1803b7faee4b92f.jpg[/img] A: Stable without redundant restraint B: Stable with redundant restraint(s) C: Unstable with redundant restraint(s) D: Instantaneously unstable with redundant restraint(s)
- The following structural system is:[img=148x70]1803b7fae44e645.jpg[/img] A: Stable without redundant restraint B: Stable with redundant restraint(s) C: Unstable D: Instantaneously unstable
- The following structural system is:[img=279x167]1803b7fa72c1d55.jpg[/img] A: Stable without redundant restraint B: Instantaneously unstable C: Unstable D: Stable with redundant restraint(s)
- The following structural system is:[img=126x72]1803b7fac49252c.jpg[/img] A: Unstable B: Instantaneously unstable C: Stable without redundant restraint D: Stable with redundant restraint(s)