A.用2m托線板檢查 B.用方尺和塞尺檢查 C.用2m靠尺和塞尺檢查 D.用直尺和塞尺檢
A.4mm B.1mm C.2mm D.3mm
A.100mm,80mm B.110mm,70mm C.100mm,70mm D.110mm,80mm