中国省市县（区）数据[{"code":"110000","sheng":"11","di":"00","xian":"00","name":"北京市","level":1},{"code":"110100","sheng":"11","di":"01","xian":"00","name":"市辖区","level":2},{"code":"110101","sheng":"11","di":"0

linux命令中 cd - 与 cd ../ 的区别cd - 是返回上一次目录cd ../ 是返回上一层目录举个例子目录home目录到 user目录留在user目录输入cd -回到home目录再输入 cd -回到上一次目录 也就是user目录输入 cd ../ 回到 home目录再输入 cd ../ 回到 根(/)目录了

中国56个民族JSON数据{"data":[{"id":"01","name":"汉族"},{"id":"02","name":"蒙古族"},{"id":"03","name":"回族"},{"id":"04","name":"藏族"},{"id":"05","name":"维吾尔族"},{"id":"06","name":"苗族"},{"id":"07","name":"彝族"},{"id":"