Maintain the operation of the air-outlet system, including the air exhausting of bathroom and kitchen, as well as the condition of belt.
空调系统的送排风系统运行正常，包括卫生间、厨房的排风，皮带的松紧。
Maintain the operation of the air-outlet system, including the air exhausting of bathroom and kitchen, as well as the condition of belt.
空调系统的送排风系统运行正常，包括卫生间、厨房的排风，皮带的松紧。
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