洛伦兹力使带电粒子在匀强磁场中做匀速圆周运动,下列各图中均标有带正电荷粒子的运动 发布时间:2017-06-13 12:50 │ 来源:www.tikuol.com 题型:选择题 问题: 洛伦兹力使带电粒子在匀强磁场中做匀速圆周运动,下列各图中均标有带正电荷粒子的运动速度v,洛伦兹力F及磁场B的方向,虚线圆表示粒子的轨迹,其中可能出现的情况是( )A.B.C.D.
题型:选择题 句型转换。1. Tina likes her new job. (改为一般疑问句,并作肯定回答。) ________________________________________ 2. Emma works in the zoo. (就画线部分提问) ______ ______ Emma ______ in the zoo? 3.Paul wants to be a soccer player, because he likes soccer. (就画线部分提问) ______ ______ Paul ______ to be a soccer player? 4. We are students. (就画线部分提问) ______ ______ your______? 5. My father goes to work from Monday to Friday. (就画线部分提问) ______ ______ your father ______ ______ work? 查看答案