X射线管的波长与管电压有关,管电压越高则波长(),穿透能力()。 发布时间:2017-05-09 04:25 │ 来源:www.tikuol.com 题型:填空题 问题: X射线管的波长与管电压有关,管电压越高则波长(),穿透能力()。
题型:填空题 After climbing the hills in the natural park for hours, my legs _ under me and I failed to keep pace with others.A.gave outB.gave upC.gave inD.gave away 查看答案