因每地都不一样，所以我们以北京为例：根据北京市人民政府办公室厅京政办发〔1999〕4号文件，
O O O O O O O O O O O O O B-address I-address O O O O O B-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government I-government O O O O O O O O O O O O