针对这个问题：假定所有住宅需要提供相同数量的服务，选择一个服务中心，使得到它们所有住宅总任务量最小。（任务量等于服务数和距离的乘积），采用lingo软件建立模型编程求解-To address this issue: Assume all residential need to provide the same amount of service,　a service center, so that they all get the minimum amount of total residential task. (Tasks amount equal to the product of the number of services and distance), using lingo software programming model for solving