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【单选题】
在投影面垂直线中,垂直于W投影面的直线称为A.
正垂线
B.
铅垂线
C.
侧垂线
D.
水平线
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举一反三
【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> ,= ,< );
【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.
【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
【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.
【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.
【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
【简答题】Which of the following costs are payable by the charterer under a time charter party． （ ）
【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：____________...
【单选题】All of the following are examples of issues that the organization described in the last paragraph would be likely to advise corporations on EXCEPT______.
A.
long-term inflation
B.
health and safety regulations
C.
retirement and pension programs
D.
how to develop new markets
相关题目：
【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
参考解析：
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