根据网考网考试中心的统计分析，以下试题在2018/4/8日PMP考试习题练习中，答错率较高，为：88%
【单选题】the methods and techniques for determining the economic costs, the environmental impact, the economic returns, and the probability for
success are called:
a. feasibility studies.
b. bills of materials.
c. pert charts.
d. managerial reserves.
e. none of the above
网考网参考答案：A，答错率：88%
网考网试题解析：
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