U盘的接口都采用()接口。
A.UPS
B.USA
C.UBS
D.USB
参考答案:D
A.+→
B.→+
C.+→
D.→+
When should a project baseline be changed
A) When a major delay occurs.B) When an official change is made.C) When a cost increase occurs.D) Changes should never be made in the baseline.