学生成绩管理,可以对学生成绩进行,输入,查询,修改,排名等功能.-student performance management, student achievement can be right for input, inquiries, modify, ranking functions.

通过SIM号查询SIM卡所在的真实的地理地址，精确到1千米以内。与移动公司进行通讯。-SIM inquiry SIM cards for the actual geographic address, accurate to within 1 km. Companies with mobile communications.