This paper analyzes the reasons of generating the faults of P&H2800XP Electrical Shovel,and expounds the countermeasures for solving the hoisting slowly and powerlessly because of the magnetic pole aging of K-925 hoist motor.

Problems in Elders Social Participation Under the Positive Aging Frameworks and the Resolutions;

This paper analyzes the concrete expressions of“Silver Hair Tide”impacts from five aspects such as aging of population making social compensation rate higher,and puts forward and expounds on the specif- ic contents of strategies of positive aging to relieve“Silver Hair Tide”.

Healthy aging and positive aging are the strategic targets and countermeasures when human faces the challenge of aging,and there are also the inevitable choices to deal with aging.