task31

代码说明：

说明：  工序调整：因为实际因素的影响，在任务11开始之前必须先完成任务15，而在任务9（顶部施工）开始到第7周后必须穿插1周时间的安装工作，因而任务10中的“照明系统”工作周数也相应减少1周；(Adjustment process: since the actual factors, the task must be completed 11 missions before the start of 15, while in task 9 (top construction) began to be interspersed 7 weeks 1 week after the installation time, thus the task of 10 in " lighting systems " work week is also a corresponding reduction in the number of 1 week )