卫星通信中Ku频段上行频率在()GHz左右。A.4 B.6 C.12 D.14 发布时间:2019-07-05 23:03 │ 来源:www.tikuol.com 题型:单项选择题 问题: 卫星通信中Ku频段上行频率在()GHz左右。A.4B.6C.12D.14
题型:单项选择题 Many people hope to have a _____ job, especially during the financial crisis.A.professionalB.premierC.primitiveD.permanent 查看答案