×
单选题
当油箱内正压或负压力过大时释压活门可防止机翼结构损坏。
A
When there are too many positive or subtractive pressure in the fuel tanks,the pressure relief valve eliminates damage to the wing structure.
B
When there is too much plus or minus pressure in the fuel tanks,the pressure relief valve previews damage to the wing structure.
C
The pressure relief valve prevents damage to the wing structure when there
is too much positive or negative pressure in the fuel tanks.
答案解析
正确答案：C
相关知识点：
油箱压力大，释压防翼损
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