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【单选题】
2015年5月25日,河南鲁山县老年公寓发生特大火灾,着火房屋的墙体均由泡沫塑料填充的铁皮夹层,俗称“铁皮泡沫屋”.下列有关说法正确的是 [ ]
A.
泡沫塑料属于有机合成材料,但不属于易燃物
B.
火灾发生后应用湿毛巾捂住口鼻迅速逃离,并拨打火警119
C.
只要达到着火点,可燃物一定会燃烧
D.
可燃物燃烧的同事一定还会发生爆炸
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【简答题】有1mol H2O(l), 在373K、100 kPa下,向真空蒸发为同温.同压下的水蒸气,则此过程 △H ( )0; △S( )0; △S环( ) 0; △G( )0。( 填> ,= ,< );
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【单选题】Which of the following words is NOT appropriate to describe Americans, according to the passage?
A.
Tidy.
B.
Inventive.
C.
Conservative.
D.
Clean.
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【判断题】采回的样品应放置一段时间在做分析 。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
正确
B.
错误
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【单选题】已知水在正常沸点373K下的△vapHm=40.64kJ/mol,H2O(l)和H2O(g)的Cp,m分别为75.38和33.60J/Kmol 试求2molH2O(l)在下列条件下全部恒温恒压下气化为水蒸气时的△S. 1)298K,101.325kPa下
A.
△S=236.7J/K
B.
△S=256.7J/K
C.
△S=156.7J/K
D.
△S=276.7J/K
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【单选题】Which of the following is NOT to be a source of stress, according to the author of this passage?
A.
Rapid changes in the world and technologies.
B.
Perceived professional competence.
C.
Work-related environments.
D.
Rash personality characteristics.
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【判断题】背斜构造一般是向上凸曲,核部是老岩层,向外岩层时代越来越新
A.
正确
B.
错误
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【单选题】Which of the following is not a region of developed industrialization mentioned in this passage?
A.
Java
B.
Belgium.
C.
Netherlands,
D.
Great Britain.
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【单选题】在 101.3 kP a 、 373 K 下, 1mol H 2 O ( l )变成 H 2 O ( g )则
A.
Q < 0
B.
△ U = 0
C.
W > 0
D.
△ H > 0
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【简答题】Which of the following costs are payable by the charterer under a time charter party. ( )
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【简答题】(1)已知:H 2 (g)+1/2O 2 (g)=H 2 O(l) ΔH=-285.8 kJ·mol - 1 H 2 (g)=H 2 (l) ΔH=-0.92 kJ·mol - 1 O 2 (g)=O 2 (l) ΔH=-6.84 kJ·mol - 1 H 2 O(l)=H 2 O(g) ΔH=+44.0 kJ·mol - 1 请写出液氢和液氧反应生成气态水的热化学方程式:____________...
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相关题目:
【简答题】有1mol H2O(l), 在373K、100 kPa下,向真空蒸发为同温.同压下的水蒸气,则此过程 △H ( )0; △S( )0; △S环( ) 0; △G( )0。( 填> ,= ,< );
查看完整题目与答案
【单选题】Which of the following words is NOT appropriate to describe Americans, according to the passage?
A.
Tidy.
B.
Inventive.
C.
Conservative.
D.
Clean.
查看完整题目与答案
【判断题】采回的样品应放置一段时间在做分析 。 prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
A.
正确
B.
错误
查看完整题目与答案
【单选题】已知水在正常沸点373K下的△vapHm=40.64kJ/mol,H2O(l)和H2O(g)的Cp,m分别为75.38和33.60J/Kmol 试求2molH2O(l)在下列条件下全部恒温恒压下气化为水蒸气时的△S. 1)298K,101.325kPa下
A.
△S=236.7J/K
B.
△S=256.7J/K
C.
△S=156.7J/K
D.
△S=276.7J/K
查看完整题目与答案
【单选题】Which of the following is NOT to be a source of stress, according to the author of this passage?
A.
Rapid changes in the world and technologies.
B.
Perceived professional competence.
C.
Work-related environments.
D.
Rash personality characteristics.
查看完整题目与答案
【判断题】背斜构造一般是向上凸曲,核部是老岩层,向外岩层时代越来越新
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following is not a region of developed industrialization mentioned in this passage?
A.
Java
B.
Belgium.
C.
Netherlands,
D.
Great Britain.
查看完整题目与答案
【单选题】在 101.3 kP a 、 373 K 下, 1mol H 2 O ( l )变成 H 2 O ( g )则
A.
Q < 0
B.
△ U = 0
C.
W > 0
D.
△ H > 0
查看完整题目与答案
【简答题】Which of the following costs are payable by the charterer under a time charter party. ( )
查看完整题目与答案
【简答题】(1)已知:H 2 (g)+1/2O 2 (g)=H 2 O(l) ΔH=-285.8 kJ·mol - 1 H 2 (g)=H 2 (l) ΔH=-0.92 kJ·mol - 1 O 2 (g)=O 2 (l) ΔH=-6.84 kJ·mol - 1 H 2 O(l)=H 2 O(g) ΔH=+44.0 kJ·mol - 1 请写出液氢和液氧反应生成气态水的热化学方程式:____________...
查看完整题目与答案