去掉一个定向支座,相当于去掉几个约束?()
A.2
B.3
C.4
D.5
参考答案:A
____Lucy____you can't go to the party. One of you has to stay at home to look after your grandma.
A.Neither;nor
B.Either;or
C.Not only; but also
项目管理规划大纲的内容主要包括()。
A.成本计划
B.总体工作计划
C.项目进度管理计划
D.项目风险管理规划
E.项目概况