问题
选择题
We're happy that our country has developed ______ these years than before. [ ]
A. quickly
B. less quickly
C. more quickly
D. most quickly
答案
答案：C
搜题请搜索小程序“爱下问搜题”
We're happy that our country has developed ______ these years than before. [ ]
A. quickly
B. less quickly
C. more quickly
D. most quickly
答案：C
某五金生产厂家2010年1～8月份的小五金销售额见附表1。
附表1 2010年1～8月份小五金销售额
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问题
设α=0.3，建立一次指数平滑预测模型，并预测9月份的销售额。