[填空题]__________是指3岁左右儿童在其身心发展的过程中所表现出来的一种对教育不太有利的独立行动与对抗行为。

小王在外资企业工作，年薪3万元，并利用业余时间在私营企业兼职，年收入2万元。
小王的爱人在国企工作，年工资2．5万元，由于企业效益上升此年带来福利收入5000元。在他们的家庭收入中还有购买股票分红所得2万元，出租住房年收入1万元，转让一项技术专利收入3万元。以下对小王家庭收入来源的分析正确的有（）
①全部劳动收入7．5万元，其中包括小王的按劳动要素分配5万元，小王爱人的按劳分配2．5万元
②按生产要素分配共计11万元
③小王爱人的5000元福利收入既不是按劳分配，也不属于按生产要素分配
④小王的年薪和兼职收入共5万元和小王爱人的年工资2．5万元均属于按劳分配

下列哪些制动器是不带停放制动的（）
①PC7Y②PEC7F③PC7YF④PEC7

The relation of language and mind has interested philosophers for many centuries. 61) The Greeks assumed that the structure of language had some connection with the process of thought, which took root in Europe long before people realized how diverse languages could be.
Only recently did linguists begin the serious study of languages that were very different from their own. Two anthropologist-linguists, Franz Boas Edward Sapir, were pioneers in describing many native languages of North and South America during the first half of the twentieth century. 62) We are obliged to them because some of them languages have since vanished, as the peoples who spoke them died out or became assimilated and lost their native languages. Other linguists in the earlier part of this century, however, who were less eager to deal with bizarre data from "exotic" language, were not always so grateful. 63) The newly described languages were often so strikingly different