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【简答题】
用工控计算机取代电磁继电器的继电电路实行控制并实现联锁，只保留部分单元电路的设备叫做微机（计算机）联锁电气集中，简称（）。
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皮皮学刷刷变学霸
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】Which of the following is in agreement with the logic behind such a dressing change the passage deals with?
A.
As America's economy slows, business casualty proves rather too casual.
B.
People in America are getting fed up with casual dress recently.
C.
Women wear suits and trousers to show their full equality with men in workplace.
D.
Workers intend to rely on their dressing to improve their social status.
【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