题目内容
The responsibility for proper weight and balance control begins with the engineers and designers, and extends to the aircraft ______ that maintain the aircraft and the pilots who operate them.
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The designers of an aircraft have set the ______ weight.
The maximum weight of an aircraft is based on the amount of ______ the wings can provide.
The ______ strength of the aircraft limits the maximum weight the aircraft can safely carry.
The ideal location of the center of ______ was very carefully determined by the designers.
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