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【单选题】
航天飞机用铝粉与高氯酸铵( NH4ClO4) 的混合物为固体燃料，反应方程式表示为
2NH4ClO4
N2↑+Cl2↑+2O2↑+4H2O。 下列对该反应的叙述中错误的是
[ ]
A.
瞬间产生大量高温气动航天飞机飞行
B.
从能量变化的角度，主要是化学能转变为热能和动能
C.
反应的焓变小于零
D.
在方程式后增加△H及其数值即为热化学方程式
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【单选题】Human Space Exploration While scientists are searching the cause of the Columbia disaster, NASA is moving ahead with plans to develop a new craft that would replace shuttles (航天飞机) on space station mi...
A.
ontrol the International Space Station.
B.
arry astronauts to the International Space Station.
C.
ransport equipment to the International Space Station.
D.
rain astronauts in space flights．
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【单选题】Human Space Exploration While scientists are searching the cause of the Columbia disaster, NASA is moving ahead with plans to develop a new craft that would replace shuttles (航天飞机) on space station mi...
A.
ontrol the International Space Station.
B.
arry astronauts to the International Space Station.
C.
ransport equipment to the International Space Station.
D.
rain astronauts in space flights．
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