单项选择题
A.2个 B.4个 C.6个 D.5个
A.100~120℃ B.120-140℃ C.150~170℃; D.170-190℃
A.0.014-0.06mm B.0.024-0.07mm C.0.034-0.08mm D.0.044-0.09mm
A.0.01~0.02mm B.0.03-0.04mm C.0.05~0.08mm D.0.06-0.107mm
微信扫一扫,加关注免费搜题