带宽和中心频率处于同一数量的放大器称为().A.高频放大器 B.宽带放大器 C.窄带 发布时间:2019-09-30 03:35 │ 来源:www.tikuol.com 题型:单项选择题 问题: 带宽和中心频率处于同一数量的放大器称为().A.高频放大器B.宽带放大器C.窄带放大器
题型:单项选择题 Only _____ as an interpreter _____ how important it was to practise spoken English.A.when did I work…I realizedB.when did I work…did I realizeC.when I work…did I realizeD.when I worked…did I realize 查看答案