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详情
The difference value between Budgeted Cost for work Performed and Actual Cost for Work Performed is（ ）.
A. Cost Variance
B. Schedule Variance
C. Earned Value
D. Cost Performed Index
参考答案:
A
详细解析:
成本偏差是实际完成工作对应的预算与实际发生费用之差。
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