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单选题
2518. 通气油箱排放单向活门是在1号和2号主油箱外侧油箱端部肋上。
A
A surge tank drain single valve is on the outside fuel tank end rib in main tank 1 and main tank 2.
B
A surge tank drain one way value is on the inboard fuel tank end rib in main tank land main tank 2.
C
A surge tank drain check valve is on the outboard fuel tank end rib in main tank land main tank 2.
答案解析
正确答案：C
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