单项选择题
A.2~6mmB.2~8mmC.2~10mmD.2~12mm
A.±0.1mmB.±0.2mmC.±0.3mmD.±0.4mm
A.10-2~10-5PaB.10-1~10-5PaC.10-1~10-4PaD.10-2~10-4Pa