单项选择题
A.0.20~0.30mm B.0.22~0.34mm C.0.24~0.37mm D.0.30~0.55mm
A.100mm B.115mm C.120mm D.125mm
A.0.20~0.30mm B.0.22~0.45mm C.0.25~0.50mm D.0.30~0.55mm