问题
All of the following rules are true about the lowest level WBS work packages except work packages:
A:can be completed without interruption in one location。
B:can be confidently estimated。
C:must be assigned to only 1 person。
D:must be completed within 80 hours。
B:can be confidently estimated。
C:must be assigned to only 1 person。
D:must be completed within 80 hours。
正确答案是：
