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.
除二次供水、市政排水设施和防空洞外，中心城区与边缘城区蚊孳生阳性率无明显差别。
Apart from the secondary water supply systems, the drainage systems and the air-raid shelters, no significant difference was found in the positive rates between the central area and the marginal area.
除二次供水、市政排水设施和防空洞外，中心城区与边缘城区蚊孳生阳性率无明显差别。
Apart from the secondary water supply systems, the drainage systems and the air-raid shelters, no significant difference was found in the positive rates between the central area and the marginal area.
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