【单选题】【消耗次数：1】
在Excel中，公式“：SUM(C2,E3：F4)”的含义是( )
①
=C2+E3+E4+F3+F4
②
=C2+F4
③
=C2+E3+F4
④
=C2+E3
参考答案：
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作用线过B点的合力；
②
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④
平衡。
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某公司历年利润
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已知某工厂生产三种产品，在掌握其基期、报告期生产费用和个体产量指数时，编制三种产品的产量总指数应采用?
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加权调和平均数指数
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某市2010年社会商品零售额为12000万元，2015年增至15600万元，这五年中物价上涨了4%，则商品零售量指数为?
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130%
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