Look! That's a house _________ a beautiful garden. [ ]
A.with
B. to
C. in
D. at
答案:A
She was surprised to know that the doctor was __________ too much for the treatment he was giving her.
A.affording
B.costing
C.offering
D.charging
PERT和CPM的主要区别在于PERT()
A.在计算进度时使用分布的均值(预期值)
B.使用最可能估算计算浮动时间
C.侧重计算浮动时间来确定那些活动的进度没有灵活性
D.在图中包括了回路或条件分支活动