下列各组分子中,核外电子总数相等的是[ ] A.CO和NO B.H2O和HCl 发布时间:2017-04-21 13:08 │ 来源:www.tikuol.com 题型:选择题 问题: 下列各组分子中,核外电子总数相等的是[ ]A.CO和NOB.H2O和HClC.SO2和H2SD.NH3和CH4
题型:选择题 The number of students who entered their names to take part in the school sports meeting was _____ 300. [ ]A. in B. up to C. surrounded D. beside 查看答案