相关题目
The （ ） is located between the engine compartment and the cockpit to protect the occupants. It also serves as a mounting point for the engine.
The primary function of the （ ） is to provide the power to turn the propeller.
Most airplanes have a small hinged section at the back of the elevator called （ ）.
The purpose to use holistic fuel tank on A/C is to （ ）.
The two main wheels are positioned on either side of the fuselage. When the third wheel is located on the nose, the airplane is said to have （ ） gear.
（ ） extend outward from the fuselage to the midpoint of each wing, they always move in the same direction.
（ ） extend from about the midpoint of each wing outward to the tip, they move in opposite directions.
Besides being a common attachment point for the other major components, the （ ） houses the cabin, or cockpit, which contains seats for the occupants and the controls for the airplane.
Airplanes with two sets of wings are referred to as （ ） ．
Airplanes with a single set of wings are referred to as （ ） ．
