单项选择题
A.0.77B.0.72C.0.62D.0.54
A.0.77B.0.93C.0.87D.0.82
A.0.87B.0.83C.0.82D.0.77
A.100mm±2mmB.60mm±2mmC.50mm±2mmD.90mm±2mm
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