方法对物业小区内二次供水设施的基本情况和卫生管理现状进行调查，抽检采集水样256份送实验室检测。
METHODS Survey of secondary water supply facilities and sanitation management status in community, sampling collected 256 water samples were sent to laboratory testing.
方法对物业小区内二次供水设施的基本情况和卫生管理现状进行调查，抽检采集水样256份送实验室检测。
METHODS Survey of secondary water supply facilities and sanitation management status in community, sampling collected 256 water samples were sent to laboratory testing.
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