问题
单项选择题
公式()。
A.固定权数加权算术平均指数公式
B.固定权数加权调和平均指数公式
C.综合指数公式
D.指数体系公式
答案
参考答案:A
解析:
所谓固定权数,是指对实际资料经过调整计算后在一定时期(如一年)内保持不变的权数。其加权算术平均指数的计算公式为:。
公式()。
A.固定权数加权算术平均指数公式
B.固定权数加权调和平均指数公式
C.综合指数公式
D.指数体系公式
参考答案:A
解析:
所谓固定权数,是指对实际资料经过调整计算后在一定时期(如一年)内保持不变的权数。其加权算术平均指数的计算公式为:。
用方框中的单词完成句子。 |
rain , cross , bookstore ,low , elevator , | crowded , noon , swimming , windy , really l. He's _____ good, isn't he? 2. I want to go _______. 3. It looks like _______,doesn't it? 4. It's ______ today, isn't it? 5. There are so many people on Sandy Beach. It is very _______. 6. They are looking through books in a ______. 7. People take an _____ to go up and down the building. 8. We eat lunch at ______. 9. - What are you doing here? - We are waiting to _____ the busy street. 10. The prices of the books are very _____ now. We can buy some. |