单项选择题
A.0.5~0.6mmB.0.6~0.7mmC.0.7~0.8mmD.0.8~0.9mm
A.0.1~0.5B.0.1~0.6C.0.1~0.7D.0.2~0.7
A.1.3~1.5B.1.4~1.6C.1.5~1.7D.1.6~1.8