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超音速气流流过激波后,气流的
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举报参考答案：
举一反三
【单选题】物流流动的六要素是（ ）
A.
流体、载体、流向、流量、流程、流速
B.
车站、码头、火车、轮船、飞机、汽车
C.
铁路、公路、水路、空中航线、港口、机场
D.
包装设备、装卸机械、仓库、托盘、叉车、货物
【单选题】第二篇 Flying the Hypert Skies A little airplane has given new meaning to the term "going hyper. " The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a h...
A.
It indicated the birth of a very fast airplane.
B.
It was self-powered, so it lasted only 11 seconds.
C.
It can transportcargo quickly and cheaply to the brink of space.
D.
It is a major milestone in the journey of a new type of very fast airplanes.
【单选题】Flying the Hypert Skies A little airplane has given new meaning to the term "going hyper. " The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a hypersonic speed o...
A.
It goes slower than a rocket.
B.
It extracts oxygen from the air that flows through the engine.
C.
It works only at speeds greater than five times the speed of sound.
D.
It doesn’t carry its own oxygen supply.
【单选题】下列有关正激波的描述中正确的是( )。
A.
流体力学中，分析正激波内的物理现象可运用连续介质模型
B.
气流通过正激波是等熵压缩过程，总温保持不变
C.
超音速气流经过正激波后速度减小，压强增大
D.
气流通过正激波后熵不变
相关题目：
【单选题】物流流动的六要素是（ ）
A.
流体、载体、流向、流量、流程、流速
B.
车站、码头、火车、轮船、飞机、汽车
C.
铁路、公路、水路、空中航线、港口、机场
D.
包装设备、装卸机械、仓库、托盘、叉车、货物
【单选题】第二篇 Flying the Hypert Skies A little airplane has given new meaning to the term "going hyper. " The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a h...
A.
It indicated the birth of a very fast airplane.
B.
It was self-powered, so it lasted only 11 seconds.
C.
It can transportcargo quickly and cheaply to the brink of space.
D.
It is a major milestone in the journey of a new type of very fast airplanes.
【单选题】Flying the Hypert Skies A little airplane has given new meaning to the term "going hyper. " The Hyper-X recently broke the record for air-breathing jet planes when it traveled at a hypersonic speed o...
A.
It goes slower than a rocket.
B.
It extracts oxygen from the air that flows through the engine.
C.
It works only at speeds greater than five times the speed of sound.
D.
It doesn’t carry its own oxygen supply.
【单选题】下列有关正激波的描述中正确的是( )。
A.
流体力学中，分析正激波内的物理现象可运用连续介质模型
B.
气流通过正激波是等熵压缩过程，总温保持不变
C.
超音速气流经过正激波后速度减小，压强增大
D.
气流通过正激波后熵不变
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