单项选择题
A.向心轴承 B.向心角接触轴承 C.推力角接触轴承 D.推力轴承
A.Js9/h9 B.N9/h9 C.D10/h9 D.H9/h9
A.50mm≤L≤150mm B.100mm≤L≤150mm C.150mm≤L≤200mm D.100mm≤L≤200mm