仿真计算银行服务系统的顾客平均等待时间，可以修改程序参数（如顾客出现概率，最大服务时间，服务窗口数等）来计算顾客平均等待时间。-The average customer waiting time simulation system of banking services, you can modify the program parameters (such as customer probability, maximum service time, service number of wind