问题 填空题

不饱和聚酯树脂固化中所采用的促进剂一般为:()、()溶液。

答案

参考答案:辛酸钴、环烷酸钴

问答题

       本学期同学们学习了很多英雄人物、爱国人士的光辉事迹,请你举出一个你最佩服的人,并说说你佩服的理由。

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

                                                                                                                                                            

单项选择题