对于一个简单的酶促反应，当［S］＜Km时 （）

A.反应速度最大

B.反应速度随底物浓度增加而加快

C.增加底物浓度反应速度不受影响

D.增加底物可使反应速度降低

E.只能增加酶量来提高反应速度

The Rational Unified Process (RUP) is a software engineering process, which captures many of best practices in modern software development. The notions of （71） and scenarios have been proven to be an excellent way to capture function requirements. RUP can be described in two dimensions – time and content. In the time dimension, the software lifecycle is broken into cycles. Each cycle is divided into four consecutive （72） which is concluded with a well-defined （73） and can be further broken down into （74） – a complete development loop resulting in a release of an executable product, a subset of the final product under development, which grows incrementally to become the final system. The content structure refers to the disciplines, which group （75） logically by nature.

（71）处填（）。

A．artifacts

B．use-cases

C．actors

D．workers