题目

When you need a job very much, you may end up taking one for which you are over qualified. Although you were initially grateful just to have the work, you now feel bored and depressed. Is there any way to change that?Start by changing your opinion, says Caitlin Kelly, the author of Malled, a book based on her experience as a sales clerk after losing her job in journalism. “Don’t focus on what you’re not getting but what you are getting,” she says. “Be patient and work attentively with a wide range of people. It doesn’t matter what the job is –there are always things you can learn有些物理量的大小不易直接观测到，但它变化时引起的其它物理量变化却很容易直接观测，用易观测的量显示不易观测的量是制作测量仪器的一种基本思路．在我们学过的测量仪器中，利用这种思路制作的有    （写出一种即可）．如图是大型电子地磅的电路图，当称重物时，在压力作用下滑片P向B端滑动，变阻器连入电路的电阻    ，电流表的示数    （选填“变大”“变小”或“不变”），这样，把电流对应的质量刻在电流表的刻度盘上，就可以读出被称物体的质量．