According to ________ announcement by Guangzhou Price Bureau, _________ new measures which have been taken recently are expected to cut the operation costs of each taxi driver by 1280 yuan

A．the; 不填

B．an; the

C．不填 ; the

D．an; 不填

()为特尔菲法的一种派生形式，也称为概率估算法。

A.综合判断法

B.回归分析法

C.专家会议法

D.时间序列法