The idea of minimizing risk via the use of prototypes and other means is the concept underlying the spiral model. A simplistic way of looking at this life-cycle model is as a waterfall model with each phase preceded by __________ analysis. 通過使用原型和其他手段最小化風(fēng)險(xiǎn)的想法是螺旋模型的基礎(chǔ)的概念?？创@個(gè)生命周期模型的一個(gè)簡(jiǎn)單的方式是將該模型看作每個(gè)階段之前都有__________分析的瀑布模型。
A、testing
B、risk
C、decision
D、possibility