The _______ system is usually found in low-wing airplanes, where the fuel tanks may be located below the engine.
A.fuel-injected
B.boost pump
C.fuel pump
D.gravity-feed
正确答案是C
The _______ system is usually found in low-wing airplanes, where the fuel tanks may be located below the engine.
A.fuel-injected
B.boost pump
C.fuel pump
D.gravity-feed
正确答案是C