1 / 4 refers to at least one-fourth of the calendar year and is usually expressed as Q1 for the 1st quarter, Q2 for the 2nd quarter, and so on.T? one/seven – four/seven, S? s? th?c Hello?n các ph?n vi?c g?m: công b? ?i?m chu?n xét tuy?n tr??ng chuyên và không chuyên; bàn giao d? li?u xét tuy?n ph?c v? xác nh?n nh?p h?c tr?c tuy?n; bàn