以硫酸滴定水中铵离子时,到达终点的颜色为()。A.绿色 B.淡橙红色 C.淡紫色 发布时间:2017-07-27 18:19 │ 来源:www.tikuol.com 题型:单项选择题 问题: 以硫酸滴定水中铵离子时,到达终点的颜色为()。A.绿色B.淡橙红色C.淡紫色
题型:单项选择题 We haven't heard from Jane for a long time. What do you suppose _____ to her?A. was happening B. to happen C. has happened D. having happened 查看答案