单项选择题
A.0.2-0.4 B.0.3-0.5 C.0.4-0.6 D.0.6-0.8
A.0.2~0.5 B.0.5 C.0.2~0.8 D.0.8
A.200-230 B.205-235 C.210-240 D.215-245
A.0.5±0.1 B.1.5±0.1 C.0.5±0.2 D.1.5±0.2
微信扫一扫,加关注免费搜题
