题目内容

温特斯季节指数平滑模型的构成有

A. 除去季节影响的时间序列指数平滑平均数
B. 时间序列变化趋势的指数平滑平均数
C. 季节因子的指数平滑平均数
D. 相关系数

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简单指数平滑法和多项式法适合于趋势预测

A. 对
B. 错

温特斯指数平滑法适合于趋势和季节性波动的预测。

A. 对
B. 错

1. Directions: There are 14 questions in this section from No.1-No.14. Fill in the blanks by choosing the best answer.【单选题】So far as I know that people’s tastes haven’t changed much, and, ______, they are getting more diverse these days than they used to be.

A. if anything
B. if something
C. if nothing

【单选题】Much of his success is______ to his powers of imagination.

A. incredible
B. credible
C. credited