施工组织设计中的三项最主要内容是( )。
A．工程概况
B．施工方案
C．施工进度计划
D．施工平面图
E．施工技术指施
参考答案：B,C,E
This problem is said _____ three times.
A．having discussed
B．to have been discussed
C．having been discussed
D．to have discussed
