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单选题
用于修理层状结构的材料必须保持原有组件的强度、重量、气动特性或电气特性。
A
Materials used to repair layered structures must keep the rigidity, gravity, aerodynamic or electronic properties of the original assembly.
B
The materials used in the repair of laminate structures must preserve the strength, weight, aerodynamic characteristics, or electrical properties of the original assembly.
C
Materials that are used for fixing the layer structures must maintain the intensity, weight, aerodynamic or electrical properties of the original assembly.
答案解析
正确答案：B
相关知识点：
修层状结构材料要保原特性
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