• 2022-06-26
    已调频信号为[img=362x27]180381067f42402.png[/img],调频灵敏度为2.5kHz/V,则调制信号为
    A: [img=132x27]180381068ca8c16.png[/img]
    B: [img=132x27]180381069439b27.png[/img]
    C: ‍[img=123x27]180381069c2c36f.png[/img]
    D: [img=123x27]18038106a90400e.png[/img]
    E: [img=141x27]18038106b23c39e.png[/img]
    F: [img=141x27]18038106ba9334d.png[/img]
    G: [img=141x27]18038106c3cd19a.png[/img]
    H: [img=141x27]18038106d1b913b.png[/img]
    I: [img=123x27]18038106db82ea2.png[/img]
  • 举一反三