There are many factors that lead to efficient and safe ______ of aircraft.
A. operation
B. work
C. flight
D. cooperation
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Proper ______ and balance control is the vital factor for the safe operation of aircraft.
A. safety
B. performance
C. lift
D. weight
The weight and balance control system ______ the weighing of the aircraft, the maintaining of the weight and balance records, and the proper loading of the aircraft.
A. consists in
B. consists of
C. is consisted in
D. is consisted of
An ______ in any one of the vital elements affects the purpose of the whole weight and balance system.
A. inaccuracy
B. accuracy
C. incorrect
D. correction
The final loading calculations will be ______ if either the aircraft has been improperly weighed or the records contain an error.
A. useless
B. careless
C. meaningless
D. helpless