6.596596……是:b:F6b.Y2e1t-o4H5f循环小数，用简便方法记作7{0K4?5}3e-O4X1J'D，把它保留两位小数是.|0w0F(\6`7j。9G1W5T1S+Y4E*B2H7U+F+O4L6U)y