题目内容

移动平均值一般适合水平趋势时序预测,对于增长趋势时序,直接以本期移动平均值为下期预测值会产生偏低的滞后偏差。

A. 对
B. 错

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报告期和基期以不变价格计算的工业总产值对比的结果,可以反映工业产品数量的综合变动,而不能反映工业产品实际价值水平的总变动。

A. 对
B. 错

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拉氏价格指数和帕氏价格指数计算结果不同,是因为拉氏价格指数主要受报告期商品结构的影响,而帕氏价格指数主要受基期商品结构的影响。

A. 对
B. 错

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Directions: Choose the best answer to complete each of the following sentences according to the information contained in the listening passage.One of the reasons for the annual increase in HIV infections is that ________ .

A. people show little concern about HIV
B. no effective cure for AIDS has been found yet
C. people are unaware of the danger of HIV
D. there is no way to prevent HIV from spreading

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The first reason given for AIDS education is _____.

A. to prevent new infections from taking place
B. to help people know where HIV infections may happen
C. to tell people how to protect themselves from HIV and AIDS
D. to tell people about the two processes of prevention from HIV infections

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移动平均值一般适合水平趋势时序预测,对于增长趋势时序,直接以本期移动平均值为下期预测值会产生偏低的滞后偏差。

A. 对 B. 错

报告期和基期以不变价格计算的工业总产值对比的结果,可以反映工业产品数量的综合变动,而不能反映工业产品实际价值水平的总变动。

拉氏价格指数和帕氏价格指数计算结果不同,是因为拉氏价格指数主要受报告期商品结构的影响,而帕氏价格指数主要受基期商品结构的影响。

Directions: Choose the best answer to complete each of the following sentences according to the information contained in the listening passage.One of the reasons for the annual increase in HIV infections is that ________ .

The first reason given for AIDS education is _____.

A. 对
B. 错