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【单选题】
Choose the statements from the box and place them in the proper place in the essay. 选择合适的句子完成段落。A.
Building a good human tower takes team work and skills.
B.
Within seconds I assisted in the formation of a three- level tower.
C.
Each team is famous for its tallest and most complex tower of people.
D.
Once a tower is built, try and see if the group can hold it for a count of 30.
E.
Since then it’s been popular, with groups competing to build higher structures.
F.
Before long I was called forward and given the great honor of the President’s Belt.
G.
I hoped to change my position because I knew that this activity required particular skills.
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【简答题】工期优化就是通过压缩计算工期，以达到要求工期的目标，在优化过程中（ ）。
【单选题】工期优化就是通过压缩计算工期，以达到要求工期的目标，在优化过程中( )。
A.
关键线路的条数只增不减
B.
关键线路的条数只减不增
C.
关键线路的条数保持不变
D.
关键线路的条数可能增加或不变
【简答题】n阶无向完全图K n 的边数是 ( ),每个结点的度数是( )。
【简答题】工期优化是通过压缩工期以达到计划工期的新要求的过程，一般通过压缩()的持续时间来达到其目的。