题目内容：
（ ）is aproject mangement technique for measuring project performance and proress.it has the ability to combine measurements of the project management triangle;scope.time and costs.
A.Critica path method（CPM）
B.Earned value mangagemengt（EVM）
C.Net present value method（NPVM）
D.Expert judgment method（EJM）
参考答案：
答案解析：