题目内容
The designers of an aircraft have set the ______ weight.
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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.
When an aircraft is designed, it is made as ______ as the required structural strength will allow.
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