题目内容

24

A. Gestures can be understood by most of the people while words cannot.
B. Gestures are more efficiently used than words when expressing feelings.
C. We can hardly understand gestures of the people from a completely differentculture.
D. We are not always sure of people’s feelings when expressed in words or gestures.

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25

A. Words, Gestures and Feelings.
B. Words and Feelings.
C. Gestures and Feelings.
D. Culture and Understanding.

灰色预测

简述灰色系统理论的特点

有关灰色预测的说法正确的有

A. 是一种对含有不确定因素的系统进行预测的方法
B. 建立模型之前,需先对原始时间序列进行数据处理
C. 常用的数据处理方式有累加和累减两种
D. 建立模型之前,不需先对原始时间序列进行数据处理

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