单项选择题
A.108mm B.118mm C.128mm D.138mm
A.0.15~0.30mm B.0.22~0.34mm C.0.24~0.37mm D.0.30~0.55mm
A.0.20~0.30mm B.0.22~0.34mm C.0.24~0.37mm D.0.30~0.55mm