与NH4+所含的质子数和电子数都相同的粒子是() A.H3O+ B.NH2- C 发布时间:2017-06-09 03:54 │ 来源:www.tikuol.com 题型:选择题 问题: 与NH4+所含的质子数和电子数都相同的粒子是( )A.H3O+B.NH2-C.OH-D.Mg2+
题型:选择题 —Do you think it’s a good idea to make friends with your students ? — ___________, I do. I think it’s a great idea.A.InformallyB.PhysicallyC.ActuallyD.Rarely 查看答案