单项选择题
A.b=γa-i B.a=γb-i C.b=γa
A.(0.10-0.20)mm和0.05mm B.(0.08-0.12)mm和0.02mm C.(0.08-0.15)mm和0.03mm
A.±0.01mm和0.01mm B.±0.02mm和0.01mm C.±0.03mm和0.01mm