The arithmetic average index is obtained by weighted average using the individual index of the quantity indicator and the value index of the base period as the weight. ()
正确
举一反三
- The price index is a weighted average and can be expressed in terms of the range of price changes relative to the base period.
- 下面类的索引定义或使用正确的是（）。 A: class MyClass{ int x; int y; public int this[int index] { get{ if (index==0) return x; else return y; }}｝ B: class MyClass{ int x; int y; public int this[int index] { set{ if (index==0) x=value; else y=value; }}} C: class MyClass{ int x; int y; public int INDEX[int index] { get{ if (index==0) return x; else return y; } set{ if (index==0) x=value; else y=value; }}} D: class MyClass{ int x; int y; public int this[int index] { get{ if (index==0) return x; else return y; } set{ if (index==0) x=value; else y=value; }}}
- 下面哪个属性可以获取下拉框的索引值 A: options[index].value B: options[index].text C: selectedIndex D: index
- 已知x=[3,2,3,3,4]，表达式[index for index,value in enumerate(x) if value==3]的值为（______ ）。
- 在excel中，计算平均数的函数是（） A: average B: sum C: lookup D: index
内容
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已知x=[3,5,7,3,7],那么表达式［index for index,value in enumerate(x)if value max(x)]的值为（ ).
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10.Consult _____ for questions about earthquakes. a. the six index b. index six c. sixth index d. index numbering six A: the six index B: index six C: sixth index D: index numbering six
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删除“学生表”中名为“Index姓名”的索引，正确的T-SQL语句为（ ）。 A: DROP INDEX 学生表. Index姓名 B: DELETE INDEX 学生表. Index姓名 C: DROP INDEX Index姓名 ON学生表 D: DELETE INDEX Index姓名 ON 学生表
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pages/index/index
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Hang Seng Index is the main indicator of the overall stock market performance in Hong Kong.