单项选择题
A.3~5mmB.10~12mmC.1.5~13mmD.12~50mm
A.12mmB.16mmC.20mmD.25mm
A.管子卡盘B.板牙刀C.进刀手轮D.割刀架
A.1/2~2inB.1/2~3inC.1/2~4inD.1/2~6in
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