【简答题】质量为 m 的粒子在长度为 l 的一维势箱中运动,基态时粒子的能量为 E 1 ,当粒子处在 的状态时,测量粒子的能量为 E 1 的几率为多少? ( )。
【单选题】When the giant went to the mountains one day, the children went into his garden.
【简答题】Directions: Match the former part of each sentences to the latter part, so as to form a whole sentence. . ( ) 1. I received the same grade ( ) 2. As I was exhausted, ( ) 3. As we know, ( ) 4. Things a...
【单选题】______ the day went on, we became closer and closer to each other. [ ]
【单选题】________the day went on, the weather turned out to be fine.
【判断题】常用的汽车制动效能评价指标是指制动距离和制动减速度。
【简答题】子叶出土的棉花和大豆幼苗,在种子萌发形成幼苗的过程中,子叶之所以能推出土面,是由于_______伸长的结果。
【单选题】The children went home from the grammar school,their lessons ___ for the day.