A. centering B. concentrating C. reinforcing D. promoting
A. nationalized B. nationwide C. nationally D. international
A. turn up B. turn out C. turn to D. turn on
A. calculate B. confirm C. schedule D. arrange
A. 采购部门的管理费用 B. 采购人员的计时工资 C. 订货业务费 D. 预付定金的机会成本
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