The project system reliability analysis method is adopted. The limit state equation is established. The calculation method of fully mechanized working facesupport system reliability is pointed out.
Peek-a-boo (lower back): Lie face down on the floor using your outstretched arms to support baby in front of you.
躲猫猫（锻炼后腰）：脸朝下，用你伸展的胳膊支撑住你前面的婴儿。
3
"Children may face serious difficulties in coping with significant moves, especially if it removes them from their current school or support system," he said.