单项选择题
A.半圆孔凹模套 B.腰形孔凹模套 C.四方孔凹模套 D.圆孔凹模套
A.0.02-0.05mm B.0.04-0.06mm C.0.05-0.08mm D.0.1-0.15mm
A.100×200 B.200×200 C.400×500 D.300×300
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