单项选择题
A.100mm B.120mm C.130mm D.320mm
A.105mm B.130mm C.155mm D.330mm
A.量角器 B.钢直尺 C.千分尺 D.游标卡尺
A.内卡钳 B.钢直尺 C.圆规 D.半圆仪
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