为节约能源，夏季空调系统的室内温度设定应（）In order to save energy, the indoor temperature setting of the air conditioning system in summer should （)

A、夏季适当调低设定温度 Be properly adjusted to lower level in summer

B、夏季适当调高设定温度 Be properly raised to higher level in summer

C、避免采用智能调温设施 Avoid using intelligent temperature adjustment facilities

D、避免人走关闭空调设施 Avoid closing air conditioning facilities when uses leave