Before SAT / USAT application technology, the relationship between the phone and SIM card is master and slave. It means that SIM card is totally in a passive acceptance of mobile instruction, and Phone is in the absolute Active Control status. 在SAT/USAT技术获得广泛应用之前,手机与SIM卡之间是一种不对称的主从关系,即SIM卡只能处于被动的接收手机的指令并执行的地位,手机则处于绝对的主动控制地位。
The Master of SIM is designed for applicants with up to three years of work experience ( work experience is not a must ) and with an educational background in business, economics or equivalent. SIM项目面向具有三年或三年以上工作经验的申请者(工作经验非必需),并且要求申请者必须具有管理、经济或相关专业的教育背景。