函数 结果 = WEEKDAY("2005/2/15") = WEEKDAY("2005/2/15",2) WEEKDAY("2005/2/15",3)函数 结果 =WEEKDAY("2005/2/15") 3 =WEEKDAY("2005/2/15",2) 2 =WEEKDAY("2005/2/15",3) 1