ICS 03.080CCS A 12中华人民共和国国家标准GB/T 44190—2024政务服务便民热线集成规范Specification for government service hotline integration2024-06-29 发布2025-01-01 实施国家市场监督管理总局国家标准化管理委员会发 布目　　次前言 ································································...