题干

要使溶液中存在K+、Na+、H+、NO3、SO42、Cl六种离子,则蒸馏水中至少溶解几种物质(  )

A:两种

B:三种

C:四种

D:五种

上一题 下一题 0.0难度 选择题 更新时间:2018-06-08 10:21:10

答案(点此获取答案解析)

B

同类题3

阅读下面诗歌,回答(1)~(4)题。

麂子

牛汉

                                                                                                                       远远的

                                                                                                                       远远的

                                                                                                                       一只棕红色的麂子

                                                                                                                       在望不到边的

                                                                                                                       金黄的麦海里

                                                                                                                       一蹿一蹿地似飞似飘

                                                                                                                       朝这里奔跑


                                                                                                                       四面八方的人

                                                                                                                       都看见了你

                                                                                                                       用惊喜的目光

                                                                                                                       用赞叹的目光

                                                                                                                       用担忧的目光


                                                                                                                       麂子

                                                                                                                       远方来的麂子

                                                                                                                       你为什么生得这么灵巧美丽

                                                                                                                       你为什么这么天真无邪

                                                                                                                       你为什么莽撞地离开高高的山林


                                                                                                                        五六个猎人

                                                                                                                        正伏在草丛里

                                                                                                                        正伏在山丘上

                                                                                                                        枪口全对着你

                                                                                                                        哦,麂子

                                                                                                                        不要朝这里奔跑