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【多选题】
Spacecrafts using semi-ballistic re-entry mode include: ____.
A.
“"Shenzhou" series spacecraft
B.
"Soyuz" spacecraft
C.
"Apollo" spacecraft
D.
"Vostok 1" manned spacecraft
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【单选题】The “Spirit” Mars pathfinder from the US has adopted ____ soft landing.
A.
Landing leg type
B.
Airbag bounce type
C.
Aerial crane type
D.
Rocket thrust
【多选题】The lunar probes adopt landing leg type soft landing are: ____.
A.
"Chang'e-3"
B.
"Phoenix"
C.
"Apollo" spacecraft
D.
"Curiosity"
【多选题】The main branches of aerodynamics include: ____.
A.
Computational aerodynamics
B.
Experimental aerodynamics
C.
Structural aerodynamics
D.
Aerodynamics of prototype’s flight test