单项选择题
A.0.05~0.08mm B.0.02~0.04mm C.0.02~0.08mm D.0.04~0.10mm
A.轴向轴承 B.径向轴承 C.推力轴承 D.径向推力联合轴承
A.金属轴承 B.粉末冶金轴承 C.非金属轴承 D.有色金属轴承