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正确答案C
