The core components of the turbojet include: ____.
A. Intake duct
B. Compressor
Combustion chamber
D. Turbine
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The characteristics of ramjet includes: ____.
A. Complex structure
B. Inefficient when the aircraft is flying at low speed
C. Good intake and compression performance when the aircraft is flying at low speed
D. Usually used in combination with other types of engines
The power source of electric power device mainly comes from: ____.
A. Solar cell
Battery
C. Wind energy battery
D. Fuel cell
The advantages of rocket engine compared with aeroengine include: ____.
A. The thrust is not affected by the flight attitude
B. Larger thrust
C. High thrust-to-weight ratio
D. Self-contained combustion agent
Non-chemical rocket engines are generally accelerated to emit: ____.
A. Hydrogen
B. Helium
C. Argon
D. Xenon
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