问题
单项选择题
已知时间数列有30年的数据，采用移动平均法测定原时间数列的长期趋势，若采用5年移动平均，修匀后的时间数列有（）的数据？
A.30年
B.28年
C.25年
D.26年
答案
参考答案：C
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已知时间数列有30年的数据，采用移动平均法测定原时间数列的长期趋势，若采用5年移动平均，修匀后的时间数列有（）的数据？
A.30年
B.28年
C.25年
D.26年
参考答案：C
| 短文填空。从方框内选择合适的单词，并用其适当形式填空，使短文完整、连贯。 | |
holidays in a small town. One rainy afternoon, 2 was impossible for them to go out to do 3 interesting, so the family decided 4 to the cinema. Joe, his wife, and their three children walked down to the town's only cinema, bought tickets and went into the hall. The lights were still 5 , and when the people in the cinema saw them they 6 clapping (鼓掌). Joe gave them a smile and turned to his wife. "Aha, I can't believe they know me and I'm 7 a warm welcome here." He said, "I guess they saw my games on TV." They sat down and then a young man came back and gave out his 8 . "Thanks a lot," said the coach, "I just can't believe you know 9 I am." "All I know it's that they would not show the film 10 at least ten people bought tickets." answered the man. 1._____ 2._____ 3._____ 4._____ 5._____ 6._____ 7._____ 8._____ 9._____ 10._____ |