PDCA cycle is the theoretical basis of the five process groups of project management. This cycle, also known as Dai Minghuan, was first proposed by who? PDCA循环是项目管理五大过程组的理论基础。该循环又被称为戴明环,是由谁最先提出的? A. Deming戴明 B. ShewhArt 休哈特 C. Crosby 克劳斯比 D. JurAn 朱兰