艾略特波浪理论的数学基础来自( )。
A．周期理论
B．黄金分割数
C．时间数列
D．斐波那奇数列
参考答案：D
— I hear that you failed the exam again. Why was that?
— I would really appreciate _________ you didn't mention this. [ ]
A. you if
B. it if
C. it when
D. that
( )不仅关系到施工进度目标能否实现，它还直接关系到工程质量和成本。
A．施工成本控制B．施工质量控制C．施工目标控制D．施工进度控制
