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受P&T建筑公司雇用,一位造价工程师为该公司在中国的首个油田的管道建设项目估算成本,但没有得到任何详细工程数据。这位工程师应采用哪种费用估算方法为P&T建筑公司提供初步成本预算?
A cost engineer was engaged by P&T Construction PLC to provide a cost estimate for the first oil field piping project in China without any detail engineering data. What type of cost estimate approach should the engineer use to provide an initial cost estimate to P&T Construction?
A.近似估算 Approximate estimate
B.量级估算 Order of magnitude estimate
C.限定性估算 Definitive estimate
D.可行性估算 Feasibility estimate
参考答案:B
解析:知识点出处:PMBOK 6th 页码:P240 章节:7.2 粗略量级估算:在启动阶段可得出项目的粗略量级估算(Rough Order of Magnitude,ROM ),其区间为−25%到+75%;之后,随着信息越来越详细,确定性估算的区间可缩小至−5%到+10%。