在圖8.8所示的項(xiàng)目活動(dòng)網(wǎng)絡(luò)圖中，關(guān)鍵路徑的時(shí)長(zhǎng)為（）周（圖中時(shí)間單位為周）。
Project （） Management includes the processes required to ensure that the project includes all the work required, and only the work required, to complete the project successfully.
