从下述收信机指标中判断哪个灵敏度最高(设输出功率相同)?()A、S/N=6dBEa= 发布时间:2019-12-23 11:27 │ 来源:www.tikuol.com 题型:单项选择题 问题: 从下述收信机指标中判断哪个灵敏度最高(设输出功率相同)?()A、S/N=6dBEa=2μvB、S/N=12dBEa=2μvC、S/N=6dBEa=3μvD、S/N=12dBEa=3μv
题型:单项选择题 Speaker A: Excuse me. I'd like to exchange this watch. I just bought it, but look at this.Speaker B: ______A.Yes, I know your watch is new, but I like my old one better.B.What seems to be the problemC.Thank you for your kindness, but my watch still works.D.Sorry. Why didn't you examine it carefully before you bought it 查看答案