题目内容
词汇与结构With airplanes, special attention should be taken not to allow the fuel nozzle spout to project very far into the tank, _______ it can damage the tank.
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词汇与结构Two transfer valves allow fuel to transfer from the outer tanks to the inner tanks. Each inner tank feeds its _______ engine.
词汇与结构Fuel is _______ from the aircraft fuel tanks through the necessary filters boost pump, and valves to the engine driven fuel pump.
词汇与结构The tanks also contain an overflow drain that prevents the _______ of the tank due to fuel expansion.
词汇与结构On hot days, it is _______ to see a small amount of fuel coming from the overflow drain.
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