某银行营业厅共有6个营业窗口，设有排队系统广播叫号，该银行的业务分为公积金、银行卡、理财卡等三种。公积金业务指定1号窗口，银行卡业务指定2、3、4号窗口，理财卡业务指定5、6号窗口。但如果5、6号窗口全忙，而2、3、4号窗口有空闲时，理财卡业务也可以在空闲的2、3、4号窗口之一办理。-A total of six banking hall business window with broadcast queuing system called the number, the bank s business is divided into three funds, bank cards, financial cards. Fund business designated the 1st window, specify the number of bank card business 2,3,4 window, specify the number of 5,6 wealth management business card window. However, if the window is all busy 5,6, 2,3,4 window and free time, financial cards can also be handled in one of 2,3,4 idle window.