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【简答题】
Unrestricted __is affecting the salmon supply.
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举报参考答案：
举一反三
【单选题】The expansion stroke of a piston engines is ____.
A.
Intake
B.
Compression
C.
Combustion
D.
Exhaust
【多选题】The main characteristics of a piston engines include: ____.
A.
More efficient when flying at low speed
B.
Are direct reaction engines
C.
When the aircraft's flight speed exceeds 700-800 kilometers per hour, the propulsion efficiency will also drop sharply
D.
Widely used in some small and low-speed aircraft
【单选题】The most basic type of air jet engine is ____.
A.
Turbojet
B.
Fanjet
C.
Propjet
D.
Ramjet
【多选题】The core components of the turbojet include: ____.
A.
Intake duct
B.
Compressor
C.
Combustion chamber
D.
Turbine
相关题目：
【单选题】The expansion stroke of a piston engines is ____.
A.
Intake
B.
Compression
C.
Combustion
D.
Exhaust
【多选题】The main characteristics of a piston engines include: ____.
A.
More efficient when flying at low speed
B.
Are direct reaction engines
C.
When the aircraft's flight speed exceeds 700-800 kilometers per hour, the propulsion efficiency will also drop sharply
D.
Widely used in some small and low-speed aircraft
【单选题】The most basic type of air jet engine is ____.
A.
Turbojet
B.
Fanjet
C.
Propjet
D.
Ramjet
【多选题】The core components of the turbojet include: ____.
A.
Intake duct
B.
Compressor
C.
Combustion chamber
D.
Turbine
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