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【单选题】
Compared with the case where the product defect probability only depends on the quality control of the manufacturer (exercise 1). Which of the following statement is TRUE?A.
If the machine quality depends on both efforts of the manufacturer and consumer, the manufactuer has no incentive to offer a full warranty.
B.
If the machine quality depends on both efforts of the manufacturer and consumer, the manufactuer charges a price above 1000 yuan, in order to cover the warranty cost.
C.
If the machine quality depends on both efforts of the manufacturer and consumer,the manufactuer pays more effort to prevent the product defect than in the case where the quality depends only on the manufactuer's action.
D.
None of the above
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举一反三
【单选题】Michael Roth, president of Wesleyan University, who is interested in making more fundamental changes to what happens in the classroom, wants more courses to be _____.
A.
project-based
B.
skill-based
C.
content-based
D.
work-based
【简答题】一系统由状态1到状态2,沿途径I完成时放热200 J,环境对系统做功50J;沿途径II完成时,系统吸热100 J,则W值为 ,沿途径III完成时,系统对环境做功40 J,则Q值为 。
【简答题】如图12-3所示，一个热力学系统由状态A沿ACB变到状态B，有334 J的热量传入系统，而系统做功126 J。（1）若沿ADB过程系统做功42 J，问有多少热量传入系统？（2）当系统由状态B沿曲线BA返回状态A时，外界对系统做功84 J，问系统是吸热还是放热？传递了多少热量？
【简答题】如图所示，一系统由状态a沿acb到达状态b的过程中，有350J热量传入系统，而系统作功126J， （1）若沿adb时，系统作功42J，问有多少热量传入系统？ （2）若系统由状态b沿曲线ba返回状态a时，外界对系统作功为84J，试问系统是吸热还是放热？热量传递是多少？
【多选题】一闭口系统从状态1经途径A到达状态2,该过程向外界放热50 kJ,系统对外作功50 kJ。现由状态1经途径B到达状态2,该闭口系从外界吸热10 kJ,下列说法正确的是
A.
从状态1到状态2，闭口系内能不变
B.
经途径B系统对外作功90 kJ
C.
经途径B系统对外作功110 kJ
D.
从状态1到状态2，闭口系内能减少100 kJ
【判断题】系统由状态1变到状态2,再由状态2变回状态1,两次过程中的内能改变量若不同,说明系统在变化前后处于状态1时的内能不同,该系统一定不满足质量守恒定律。
A.
正确
B.
错误
【单选题】Philip Roth was hailed as a major new author in 1960.
A.
published
B.
challenged
C.
acclaimed
D.
guided
【简答题】Roth斑
【简答题】Roth斑
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