涡喷发动机的工作原理?
下面那个选项不是与数据无关的控制信令() ["MIMO参数,","信道质量指示器,","用于下行传输的MIMO反馈,","预编码矩阵指示器."]
内浮顶油罐是在()内设置浮船而成。 ["A.平顶油罐","B.球罐","C.拱顶油罐","D.以上三者"]
下面哪项不是上行逻辑信道() ["CCCH,","RCCH,","DCCH,","DTCH."]
依据《产品质量检验机构计量认证/审查认可(验收)评审原则》,()的变更需要报发证机关或其授权的部门备案。 ["A、最高管理者","B、质量主管","C、所有部门主管","D、所有技术人员","E、技术主管"]
银行承兑汇票的出票人应具备哪些条件?