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【单选题】
G50X80.0Z200.0； G00X30.0W-50.0；这时刀具坐标值的位置是()。
A.
X30.0，Z150.0
B.
X30.0，Z50.0
C.
X30.0，Z-50.0
D.
Y30.0，Z50.0
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