生产机械产品的最后一道工序是:()
A、机加工
B、热处理
C、装试
参考答案:C
I’ll go to the library as soon as I finish what I ___________.
A.was doing
B.am doing
C.have done
D.had been doing
人为利润中心与自然利润中心相比,不具备独立的经营权。( )