简述工作分析的流程以及各环节的主要工作。
The Inmarsat system is open for use by（）countries on a non-discriminatory basis. ["some","lots of","many","all"]
学习准备有（）和（）两个维度。 ["横向","逆向","纵向","顺向"]
浙江省统一软件建设采用（）、分级实施、分级维护的办法。 ["A.统一开发","B.分级开发","C.统一培训","D.分级培训"]
Within the polar areas it is（）to see a satellite in geo-stationary orbit . ["impossible","possible","easy","difficult"]
带极埋弧堆焊的特点是什么？
