单选题 Which of the following is a common characteristic of most project life cycle descriptions?

A、 Cost and staffing are low at start，higher towards the end of implementatioand drop rapidly as the project nears completio
B、 The probability of successfully completing the project is highest at the start of the projec
C、 Stakeholders have the most influence on the final characteristics of the product at the end of the projec
D、 Risk and uncertainty are lowest at the start of the projec

【正确答案】 A

【答案解析】[解析] 下列哪项是大多数项目生命期所共有的特点? A) 成本和资源投入开始低，在实施中开始升高，在接近项目完成时迅速下降。 B) 项目成功完成的概率在项目开始时最高。 C) 干系人在项目结束时对项目的产品有着最大的影响。 D) 风险和不确定性在项目开始时最低。