某供电所查明，有一居民生活用电户38OV三相四线制供电，私自接用动力设备容量为5kW和对外租赁经营门面的照明与空调3kW，实际使用起止时间不详。假定居民生活电价为0．5653元／KWh，非普工业电价为O.7625元／KWh，商业、非居照明电价为0．8895元／KWh。试计算：（1）应补收该户的差额电费；（2）应收取该户的违约使用电费

A. It is a navigation mode that ensure the aircraft follows a desired flight path in the range of navigation signal coverage. or within the capacity limits of the airborne navigation equipment, or a combination of both.
B. It is required NAV performance.
C. It Regulates the system performance requirements of the aircraft flying in the designated airspace or along the ATS route. flight instrumentation procedure