单项选择题
A.10±0.12mm B.20±0.12mm C.10±0.10mm D.20±0.10mm
A.0.1% B.0.3% C.0.5% D.0.7%
A.±0.01mm B.±0.02mm C.±0.03mm D.±0.04mm
A.0.1N B.0.2N C.0.4N D.0.6N
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