单项选择题
A、0.25-0.52mm B、0.25-0.65mm C、0.25-0.8mm D、0.25-1.0mm
A、0.35-0.55mm B、0.35-0.65mm C、0.35-0.8mm D、0.35-1.0mm
A、0.25-0.45mm B、0.25-0.6mm C、0.35-0.6mm D、0.35-0.6mm