说明：  作为项目管理协会（PMI）的标准和指南，本指南是通过相关人员的自愿参与和共同协商而开发 的。其开发过程汇集了一批志愿者，并广泛收集了对本指南内容感兴趣的人士的观点。PMI管理该开 发过程并制定规则以促进协商的公平性，但并没有直接参与写作，也没有独立测试、评估或核实本 指南所含任何信息的准确性、完整性或本指南所含任何判断的有效性
(As a standard and guide for the Project Management Institute (PMI), this guide was developed through the voluntary participation and joint consultation of relevant personnel .Its development process has brought together a group of volunteers and the views of a wide range of people interested in the content of this guide.PMI management should be open The process was developed and rules were developed to promote fairness in the negotiation, but there was no direct involvement in the writing and no independent testing, evaluation or verification of the text The accuracy, completeness of any information contained in this Guide or the validity of any judgments contained in this Guide)