单项选择题
A.34gB.40gC.42gD.45g
A.0.45mmB.0.50mmC.0.54mmD.0.55mm
A.0.12~0.30mmB.0.15~0.35mmC.0.2~0.30mmD.0.2~0.35mm
A.检查和校正B.检验和调整C.检测和更换D.检修和调整
微信扫一扫,加关注免费搜题