论述社会保险费的负担方式。
Refer to the exhibit. On the basis of the information presented， which statement is true？（） ["OSPF router 5.0.0.2 is an ABR","Network 6.0.0.0\/8 was learned from an OSPF neighbor within the area","The default route is learned from an OSPF neighbor","A default route is configured on the local router"]
逆信使
磨削加工时的主运动是（）。 ["砂轮的旋转","工件的旋转","砂轮的横向运动","砂轮的纵向移动"]
“三个代表”重要思想体现的基本经济制度是（） ["社会主义公有制","社会主义公有制为主体，多种所有制经济共同发展","资本主义私有制","资本主义私有制为主体，多种所有制经济共同发展"]
哈罗德一多马模型
