问题 填空题

在同一断面处测风不得少于()次,每次的结果误差不应超过(),如果误差大于5%,需要加测()次,直至满足要求。取3次的平均值。

答案

参考答案:3;5%;1

材料分析题

根据下侧漫画回答下列问题。 

(1)《预防未成年犯罪法》将漫画中孩子的行为列为什么行为?

                                                                                                                                                              

(2)这部法制定的目的是什么?

                                                                                                                                                             

                                                                                                                                                              

(3)作为青少年我们应该加强自我防范意识,具体应该怎样做?

                                                                                                                                                              

                                                                                                                                                              

单项选择题