I regret ________ that you have failed the exam, but what you should do now is not to regret ______ so

much time but to seize every moment from now on. [       ]

A. to inform; wasting

B. informing; to waste

C. to inform; to waste

D. informing; wasting

工加定位的目的在于确定（）的位置，则应根据该基准设计定位方案。

A.设计基准

B.工序基准

C.定位基准

D.装配基准