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【简答题】
(5分)化学为交通运输做出很多贡献。请回答下列问题： （1）汽车在行驶过程中的能量转化是__________________________； （2）飞机外壳用的主要材料是硬铝，它属于_______(填序号)； A．合成材料    B．金属材料    C．复合材料 （3）载人航天飞船所用固体燃料是铝粉和高氯酸铵(NH 4 ClO 4 )的混合物。发射时，点燃铝粉产生大量的热，达到高温，引起高氯酸铵发生分解，产生空气中含量最多的两种气体、一种常见的液态氧化物和氯气。写出高氯酸铵分解的化学方程式_____________________，该反应前后氮元素的化合价变化为_________。
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【单选题】只进行金额核算的账户,其明细账的格式一般为( )。
A.
三栏式
B.
多栏式
C.
数量金额式
D.
横线登记式
查看完整题目与答案
【简答题】调压站设置调压器的并联装置的作用是什么?画图说明该装置的工作原理。
查看完整题目与答案
【单选题】The "thumbs up" sign is an instinctive response to happiness.
A.
true
B.
false
查看完整题目与答案
【简答题】化学反应HC 2 O 4 – （ag）+C 6 H 5 O – （ag） === C 2 O 4 2– （ag）+C 6 H 5 OH（ag）  （1）计算反应在298.15 K时的ΔrG m Θ （298.15）；  （2）当反应物的浓度皆为0.01mol·L –1 ，生成物的浓度皆为0.1mol·L –1 时，反应向哪个方向进行？  （已知H2C 2 O 4 K a2 Θ =6.4×10 –5...
查看完整题目与答案
【单选题】只进行金额核算的账户,其明细账的格式一般为( )
A.
数量金额式
B.
多栏式
C.
三栏式
D.
横线登记式
查看完整题目与答案
【简答题】The "thumbs up" sign in many countries (show) _______ happiness.
查看完整题目与答案
【单选题】已知下列反应的标准平衡常数分别为: H 2 (g)+S(s)=H 2 S(g) K 1 Θ , O 2 (g)+S(s)=SO 2 (g) K 2 Θ , 则反应 H 2 (g)+SO 2 (g)=H 2 S(g)+O 2 (g) 的平衡常数为
A.
K 1 Θ - K 2 Θ
B.
K 1 Θ × K 2 Θ
C.
K 2 Θ / K 1 Θ
D.
K 1 Θ / K 2
查看完整题目与答案
【多选题】Many people all over the world use their bodies as well as their voices to communicate. Two very common examples are the thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to m...
A.
This is exemplified by thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
B.
I would like to illustrate the point with the examples of thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
C.
For example, thumbs-up sign means "OK", "fine" or "good" and the thumbs-down gesture has  the opposite meaning.
D.
Thumbs-up to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
查看完整题目与答案
【多选题】Many people all over the world use their bodies as well as their voices to communicate. Two very common examples are the thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to m...
A.
This is exemplified by thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
B.
For example, thumbs-up sign means "OK", "fine" or "good" and the thumbs-down gesture has  the opposite meaning.
C.
Thumbs-up to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
D.
I would like to illustrate the point with the examples of thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
查看完整题目与答案
【单选题】Like in the USA, the thumbs up sign is an affirmative sign in this European nation. Which country is this?
A.
San Marino
B.
Vanuatu
C.
Laos
D.
Germany
查看完整题目与答案
相关题目：
【单选题】只进行金额核算的账户,其明细账的格式一般为( )。
A.
三栏式
B.
多栏式
C.
数量金额式
D.
横线登记式
查看完整题目与答案
【简答题】调压站设置调压器的并联装置的作用是什么?画图说明该装置的工作原理。
查看完整题目与答案
【单选题】The "thumbs up" sign is an instinctive response to happiness.
A.
true
B.
false
查看完整题目与答案
【简答题】化学反应HC 2 O 4 – （ag）+C 6 H 5 O – （ag） === C 2 O 4 2– （ag）+C 6 H 5 OH（ag）  （1）计算反应在298.15 K时的ΔrG m Θ （298.15）；  （2）当反应物的浓度皆为0.01mol·L –1 ，生成物的浓度皆为0.1mol·L –1 时，反应向哪个方向进行？  （已知H2C 2 O 4 K a2 Θ =6.4×10 –5...
查看完整题目与答案
【单选题】只进行金额核算的账户,其明细账的格式一般为( )
A.
数量金额式
B.
多栏式
C.
三栏式
D.
横线登记式
查看完整题目与答案
【简答题】The "thumbs up" sign in many countries (show) _______ happiness.
查看完整题目与答案
【单选题】已知下列反应的标准平衡常数分别为: H 2 (g)+S(s)=H 2 S(g) K 1 Θ , O 2 (g)+S(s)=SO 2 (g) K 2 Θ , 则反应 H 2 (g)+SO 2 (g)=H 2 S(g)+O 2 (g) 的平衡常数为
A.
K 1 Θ - K 2 Θ
B.
K 1 Θ × K 2 Θ
C.
K 2 Θ / K 1 Θ
D.
K 1 Θ / K 2
查看完整题目与答案
【多选题】Many people all over the world use their bodies as well as their voices to communicate. Two very common examples are the thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to m...
A.
This is exemplified by thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
B.
I would like to illustrate the point with the examples of thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
C.
For example, thumbs-up sign means "OK", "fine" or "good" and the thumbs-down gesture has  the opposite meaning.
D.
Thumbs-up to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
查看完整题目与答案
【多选题】Many people all over the world use their bodies as well as their voices to communicate. Two very common examples are the thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to m...
A.
This is exemplified by thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
B.
For example, thumbs-up sign means "OK", "fine" or "good" and the thumbs-down gesture has  the opposite meaning.
C.
Thumbs-up to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
D.
I would like to illustrate the point with the examples of thumbs-up sign, to mean "OK", "fine" or "good" and the thumbs-down gesture to mean the opposite.
查看完整题目与答案
【单选题】Like in the USA, the thumbs up sign is an affirmative sign in this European nation. Which country is this?
A.
San Marino
B.
Vanuatu
C.
Laos
D.
Germany
查看完整题目与答案
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