Page 47 - Demo

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R&R %u7684%u6587%u7ae0%u5c07%u6703%u662f%u91cd%u8981%u7684%u95dc%u9375%u7406%u8ad6%u57fa%u790e%u5047%u8a2d%u6587%u7ae0%u300253%u7531%u65bc%u662f%u591a%u5e74%u671f%u7814%u7a76%u8a08%u756b%uff0c%u6211%u6703%u76e1%u91cf%u907f%u514d%u4f7f%u7528%u63db%u500b%u570b%u5bb6%u8cc7%u6599%u6216%u662f%u5c07%u5df2%u77e5%u7814%u7a76%u8b70%u984c%u9032%u884c%u4ea4%u53c9%u914d%u5c0d%u7684%u8a08%u756b%u6848%u64b0%u5beb%uff0c%u9664%u975e%u7814%u7a76%u8cc7%u6599%u5177%u6709%u76f8%u7576%u7684%u7368%u7279%u6027%u53ca%u5275%u65b0%u6027%uff0c%u800c%u80fd%u5e36%u4f86%u5d84%u65b0%u7684%u653f%u7b56%u61c9%u7528%u610f%u6db5%u3002%u6211%u9ad8%u5ea6%u540c%u610f%u9673%u606d%u5e73%uff082018%uff09%u5c0d%u5be6%u8b49%u8cc7%u6599%u6587%u7ae0%u7684%u770b%u6cd5%uff0c%u8fd1%u5e74%u4e5f%u66fe%u5728 Quarterly Journal of Economics (QJE) 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