单项选择题
A.176N.m B.186N.m C.196N.m D.206N.m
A.0.25mm B.0.35mm C.0.45mm D.0.50mm
A.0.3mm B.0.4mm C.0.5mm D.0.6mm
A.纺织布 B.绸布 C.毛刷 D.铜丝刷
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