自来水管的内直径是2厘米，水管内水的流速是每秒8厘米．一位同学去洗手，走时忘记关掉水龙头，5分钟浪费____升水．

    Xie Lei ____ a plane for London six months ago to complete a business ____ .She is now halfway through the       3    year. At the beginning, she had to learn almost everything again. She lives with a      4    family, which gives her the         5     to learn more about everyday life and      6     in her new country.

    She wrote her first      7    to her        8     ， but she only got an E. Now she has    9    the life and she feels much more at home and is going to join a few university clubs in order to have a balance between study and a social life. We wish Xie Lei all the best with her    10   Keep it up! Xie Lei.

下列现象中与大气压无关的是（　　）

下列物理量中，以科学家的名字焦耳作为单位的物理量是（）