SAH's new organisational structure requires ______.
A.75% of the old management positions
B.25% of the old management positions
C.25% more management positions
D.5% fewer management positions
第5题
( )加工中心的定尺寸刀具(如钻头、铰刀和键槽铣刀等),其尺寸精度直接影响工件的尺寸精度。
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