设备验收应注意哪些事项？
文件目录的组织和管理应（）和防止冲突。 ["节省空间","提高速度","便于检索","便于使用"]
Hydraulic control check value is generally used to （） in the marine hydraulic mechanism. ["control the back pressure of return oil","lock the oil lines under some conditions","change the direction of oil flow","act as relief valve"]
在支行网点现有岗位体系之外，增设（），专职从事个人业务营销工作。 ["个人业务产品助销员岗","个人客户经理岗","个人业务产品经理岗","个人业务理财经理岗"]
业务流程再造的作用在于（）。 ["企业贴近市场","减少成本","全面提升产品质量","提高服务质量和水平"]
简述卫星通信的概念，单颗对地静止的卫星覆盖面积是多少？
