问题 判断题

离子选择电极-流动注射法测定水中硝酸盐氮时,钙离子、镁离子干扰测定。

答案

参考答案:错

解析:离子选择电极-流动注射法测定水中硝酸盐氮时,钙离子、镁离子不干扰测定。

写句子

连词成句,并加上标点。  

1.唱歌      欢蹦乱跳地      枝头      灰雀      在

                                                                                                                                                         

2.望远镜      河对岸       嘹望着      的      * *       小村      用      仔细地

                                                                                                                                                         

3.被      小巧手      同学们      评为      我 

                                                                                                                                                         

4.明朝      伟大的      药物学家      李时珍     和      医学家      是

                                                                                                                                                         

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