单项选择题
A.9.400m;0.900m B.9.400m;1.200m C.9.550m;0.900m D.9.550m;1.200m
A.外移0.007m B.内移0.007m C.外移0.003m D.内移0.003m
A.18.0063mB.17.9937mC.18.0126mD.17.9874m