A.板厚的负公差为-0.18mm,正公差为0.18~0.5mm
B.板厚的负公差为-0.1mm,正公差为0.18~0.3mm
C.板厚的负公差为-0.05mm,正公差为0.18~0.25mm
D.板厚的负公差为0,正公差为0.18~0.2mm