单项选择题
A.0.4~2mm B.0.5~2mm C.0.6~2mm D.0.8~2mm
A.0.03mm B.0.05mm C.0.08mm D.0.1mm
A.(4mm±9.5mm)*30mm B.(4.5mm±0.5mm)*30mm C.(5mm±0.5mm)*30mm D.(3.5mm±0.5mm)*30mm