为了实现进度目标,应选择合理的( ),以避免过多的合同交界面而影响工程的进度。
A.合同结构
B.进度计划
C.承包模式
D.网络技术
参考答案:A
As an operating system repeatedly allocates and frees storage space, many physically separated unused areas appear. This phenomenon is called ______.
A.fragmentation
B.compaction
C.swapping
D.paging
Peter didn’t do his homework and then he ___ a silly excuse to his teacher.
A.made
B.had
C.found
D.took