For many years, the principle goal of computer (73) was to write short pieces of code that would execute quickly. The (74) needed to be small, because memory was expensive, and it needed to be fast, because processing power was also expensive.

A．users

B．programmers

C．computer

D．program

工程施工阶段，不是承包人应做好的工程结算管理工作是（）。

A.做好进场前施工准备工作，为竣工结算留下伏笔

B.施工过程中做好签证和变更工作

C.做好索赔工作

D.做好跟业主和监理的沟通工作