多项选择题 专利文献中常见的几种人有（   ）。

未知题型 求教：2016年计算机一级考试WPS选择题7如何解答？

单项选择题 In which one of the stages of moral development do individuals stick to rules to avoid physical punishment and follow rules only when doing so is in their immediate interest? A、preconventional stage B、conventional stage C、principled stage D、post-conventional stage