粒子和质子以相同速度垂直于电场线进入两平行板间匀强电场中,设都能飞出电场,则它们 发布时间:2017-05-16 03:09 │ 来源:www.tikuol.com 题型:填空题 问题: 粒子和质子以相同速度垂直于电场线进入两平行板间匀强电场中,设都能飞出电场,则它们离开匀强电场时,侧向位移之比y:yH= ,动能增量之比= 。
题型:填空题 It has been announced by our provincial government that another two medical teams will be sent to ______ the injured people in the severe earthquake. [ ]A. join to B. join in C. take part in D. attend 查看答案