所谓同一产业，是指具相同使用功能和替代功能的产品或劳务的集合，实质上就是具有竞争关系的卖方企业的集合。( )
参考答案：对
I want to know ______ the day after tomorrow. [ ]
A. what he will do
B. what will he do
C. what he did
D. what did he do
运维部门对已处理的故障，必须查清故障原因，确定故障性质和责任，采取防范措施，避免同类故障再次发生。
