1. A complicated mechanism shown as below.
Try to determine the number of moving links (n), lower pair (PL), and higher pair (PH). (4 points)
2. Try to calculate the degree of freedom (DOF) of the mechanism. (4 points)
3. Try to mark out the passive DOF, redundant restraint, and compound linkage. (2 points)
B
E
G
K
H