Martin 是处于早期阶段的项目的项目经理。他需要估算成本，但发现有关项目的详细资料有限。以下哪种估算技术最不符合他的要求？Martin is the project manager of a project that is in an early phase. He needs to estimate costs but finds that he has a limited amount of detailed information about the project. Which of the following estimation techniques is least suited to his requirements? *