Longitudinal stability is provided by a hinged drag brace which folds upward and aft during gear retraction. The above sentence means "横向稳定性通过一根绞链的阻力杆进行控制，该阻力杆在起落架收起时向后上方折叠。"
A.1
正确答案是B
Longitudinal stability is provided by a hinged drag brace which folds upward and aft during gear retraction. The above sentence means "横向稳定性通过一根绞链的阻力杆进行控制，该阻力杆在起落架收起时向后上方折叠。"
A.1
正确答案是B