• 2022-06-06 问题

    The transmission rate of the binary digital transmission system is 2400B,then the transmission bit rate is ____;if the system is hexadecimal, with the same symbol rate, the transmission bit rate is ____. A: 2400 bit/s, 2400 bit/s B: 2400 bit/s, 4800 bit/s C: 2400 bit/s, 9600 bit/s D: 4800 bit/s, 9600 bit/s

    The transmission rate of the binary digital transmission system is 2400B,then the transmission bit rate is ____;if the system is hexadecimal, with the same symbol rate, the transmission bit rate is ____. A: 2400 bit/s, 2400 bit/s B: 2400 bit/s, 4800 bit/s C: 2400 bit/s, 9600 bit/s D: 4800 bit/s, 9600 bit/s

  • 2022-05-29 问题

    通常,信息的单位是( ) A: bit B: bit/s C: s D: bit/h•s

    通常,信息的单位是( ) A: bit B: bit/s C: s D: bit/h•s

  • 2022-06-11 问题

    1Mbit/s=( ) A: 10^3 bit/s B: 2^20 bit/s C: 10^6 bit/s D: 2^10 kbit/s

    1Mbit/s=( ) A: 10^3 bit/s B: 2^20 bit/s C: 10^6 bit/s D: 2^10 kbit/s

  • 2022-05-30 问题

    某十六进制数字基带系统速率为2400 Baud,则该系统的比特速率为( )。 A: 2400 bit/s B: 4800 bit/s C: 9600 bit/s D: 38400 bit/s

    某十六进制数字基带系统速率为2400 Baud,则该系统的比特速率为( )。 A: 2400 bit/s B: 4800 bit/s C: 9600 bit/s D: 38400 bit/s

  • 2022-06-05 问题

    二进制码元速率为1200B,其信息速率为() A: 1200 bit/s B: 1200 bit C: 2400 bit/s D: 2400 bit

    二进制码元速率为1200B,其信息速率为() A: 1200 bit/s B: 1200 bit C: 2400 bit/s D: 2400 bit

  • 2022-05-30 问题

    串行通信波特率的单位是() A: bit/s B: bps C: s/bit D: s/b

    串行通信波特率的单位是() A: bit/s B: bps C: s/bit D: s/b

  • 2022-06-06 问题

    It's ______ hot today, isn't it A: little B: bit C: a bit

    It's ______ hot today, isn't it A: little B: bit C: a bit

  • 2022-06-01 问题

    设一数字传输系统传送二进制码元的速率为2400B,若该系统改为传送十六进制码元,码元速率不变,这时系统的信息速率为()(<br/>)A.2400 bit/s A: 4800 bit/s B: 9600 bit/s C: 1200 bit/s

    设一数字传输系统传送二进制码元的速率为2400B,若该系统改为传送十六进制码元,码元速率不变,这时系统的信息速率为()(<br/>)A.2400 bit/s A: 4800 bit/s B: 9600 bit/s C: 1200 bit/s

  • 2022-06-19 问题

    ​假设2ASK的基带成形波形采用矩形,则该数字调制系统的频带利用率为 。‍ A: 2bit/s/Hz B: 4 bit/s/Hz C: 1 bit/s/Hz D: 1/2 bit/s/Hz

    ​假设2ASK的基带成形波形采用矩形,则该数字调制系统的频带利用率为 。‍ A: 2bit/s/Hz B: 4 bit/s/Hz C: 1 bit/s/Hz D: 1/2 bit/s/Hz

  • 2022-06-06 问题

    — It ’ s a warm day, isn —’ Yes, t it? it ’ s __________ cold. I just wear a jacket. A: not a bit B: a bit C: a little D: not a little

    — It ’ s a warm day, isn —’ Yes, t it? it ’ s __________ cold. I just wear a jacket. A: not a bit B: a bit C: a little D: not a little

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