Airport Engineering
Zero fuel weight of an aircraft is:

Equal to sum of empty operating weight and the maximum pay load
Less than empty operating weight
Equal to empty operating weight
Equal to maximum landing weight

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Airport Engineering
Wing loading of an aircraft is

Gross total weight of the aircraft/ load of the wings
Load of the wings
Gross total weight of the aircraft/ wing area
Gross total weight of the aircraft/total available H.P of engines

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