问题 判断题

测定水样碱度时,若水样中含有较多的游离氯时,可加入硝酸银消除干扰。

答案

参考答案:错

材料题

       1929—1933年的经济危机的特点是什么?面对经济危机资本主义国家走上了哪两条典型道路?其结果如何?

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                             

                                                                                                                                                              

填空题