单项选择题
A.10mm±0.2mm;80mm B.10mm±0.5mm;80mm C.10mm±0.2mm;100mm D.10mm±0.5mm;100mm
A.12周岁;230mm B.13周岁;240mm C.13周岁;230mm D.13周岁;245mm
A.12个月 B.24个月 C.36个月 D.48个月