单项选择题
A.*+-+ab/c+def+gh、ab+cde+/-f+gh+* B.*+-ab+/c+def+gh、ab+cde+/-f+gh+* C.*+-+ab/c+def+gh、ab+cde+/-+fgh+* D.*+-+ab/c+edf+gh、a+bcde+/-f+gh+*
A.模块性成本模型 B.质量控制模型 C.结构性成本模型 D.进度管理模型