Make sure that common facilities such as staircases , lifts , lobbies , refuse collection chambers , canopies and ventilation fans are cleaned , disinfected and maintained regularly 确保楼梯、升降机、大堂、垃圾站、楼宇檐蓬、抽气扇等公共设施定期清洁、消毒及维修保养。
In the victoria park improvement project currently under phased construction , a pole - top lantern and a ventilation fan , driven by the electricity generated from solar panels , have been installed in 2001 正在分阶段进行的维多利亚公园改善工程，在2001年已经安装了太阳能供电的灯具和抽气扇。
Fumes and hot air are discharged in such manner as not to be a nuisance . metal hood , air - ducts , extraction fans , grease filters water scrubbers of exhaust systems are maintained in good order 排放油烟和热空气的方式不会造成滋扰，而排气系统的金属罩气槽抽气扇油烟过滤器水剂涤气系统均保养良好
Exhaust fans that have been installed in bathrooms were running with the door closed and contaminated droplets could have been drawn from the soil stack into the bathroom through the dried out floor drains 当关上浴室门，并启动抽气扇时，受污染的液滴可能经排污渠从乾涸的地台排水口直接倒抽入浴室。
Fumes and hot air are discharged in such manner as not to be a nuisance . metal hood , air - ducts , extraction fans , grease filterswater scrubbers of exhaust systems are maintained in good order 排放油烟和热空气的方式不会造成滋扰，而排气系统的金属罩、气槽、抽气扇、油烟过滤器水剂涤气系统均保养良好；
By forcing air currents through a water chamber , the system is effective and reliable in removing the unpleasant gases , thus reducing the odour nuisance to an acceptable level stipulated in the environmental guidelines 透过站内的强力抽气扇，排气须经过水力洗涤系统，利用水炮有效去除恶臭味，使排气质素提升至可以接受的程度。
The running exhaust fans could have also transported contaminated droplets present or generated in the bathroom into the light well , and then the contaminated droplets could have entered into other apartments with an open window even several floors away from the source 启动的抽气扇更可能把浴室内受污染的液滴抽出至天井，并可能从打开的窗户进入与病源单位有几层距离的其他单位。
They then visited a flat in block e to have a better understanding of the bathroom setting of a typical household in amoy gardens , where coronavirus was suspected to have spread through dried - up u - traps , facilitated by powerful exhaust fans and the light well effect 小组接著到访Ｅ座一个单位，深入了解淘大花园一般住户的浴室装置；冠状病毒怀疑透过乾涸的聚水器，及启动强力的抽气扇和天井效应加速在屋苑扩散。
Both investigation results pointed to the dry floor drain traps in the bathrooms of individual apartments which had provided an open connection to the soil stack through which contaminated droplets were drawn into the bathrooms when the exhaust fans were turned on . the droplets could have been drawn into the light - well by the powerful exhaust fans and re - entered into other apartments by natural currents through open windows 两个调查结果均显示，由于个别单位浴室的连接地面排水口的聚水器乾涸，排水口与排污渠变得毫无阻隔，当强力的抽气扇启动时，带病毒的液滴可能从地台排水口倒流入浴室，这些液滴有可能被抽至天井，并经由打开的?户随著气流飘进其他单位。
