• 2022-06-19 问题

    某信道的带宽为4KHZ,信噪比为30DB,则信道容量为() A: 〖4log〗_2⁡31 kb/s B: 〖4log〗_2⁡31 b/s C: 〖4log〗_2⁡1001 kb/s D: 〖4log〗_2⁡1001 b/s

    某信道的带宽为4KHZ,信噪比为30DB,则信道容量为() A: 〖4log〗_2⁡31 kb/s B: 〖4log〗_2⁡31 b/s C: 〖4log〗_2⁡1001 kb/s D: 〖4log〗_2⁡1001 b/s

  • 2022-06-29 问题

    下列四个光谱项中,镁原子基态的光谱项是 A: 32P B: 31S C: 32S D: 31P

    下列四个光谱项中,镁原子基态的光谱项是 A: 32P B: 31S C: 32S D: 31P

  • 2022-06-07 问题

    E1信道的数据速率是 (30) ,其中的每个话音信道的数据速率是 (31) 。 A: 56Kb/s B: 64Kb/s C: 128Kb/s D: 2048Kb/s

    E1信道的数据速率是 (30) ,其中的每个话音信道的数据速率是 (31) 。 A: 56Kb/s B: 64Kb/s C: 128Kb/s D: 2048Kb/s

  • 2022-06-07 问题

    E1信道的数据速率是 (30) ,其中的每个话音信道的数据速率是 (31) 。 A: 1.544Mb/s B: 2.048Mb/s C: 6.312Mb/s D: 44.736Mb/s

    E1信道的数据速率是 (30) ,其中的每个话音信道的数据速率是 (31) 。 A: 1.544Mb/s B: 2.048Mb/s C: 6.312Mb/s D: 44.736Mb/s

  • 2022-06-06 问题

    Question 31 A: That’s all right! B: Hello! C: Good morning! D: Sorry! E: Good bye!

    Question 31 A: That’s all right! B: Hello! C: Good morning! D: Sorry! E: Good bye!

  • 2022-06-06 问题

    At 31 December 20X2 a company's receivables totalled £400,000 and an allowance for receivables of £50,000 had been brought forward from the year ended 31 December 20X1. It was decided to write off debts totalling £38,000 and to adjust the allowance for receivables to 10% of the receivables.What charge for receivables expense should appear in the company's statement of profit or loss for the year ended 31 December 20X2? A: £74,200 B: £51,800 C: £28,000 D: £24,200

    At 31 December 20X2 a company's receivables totalled £400,000 and an allowance for receivables of £50,000 had been brought forward from the year ended 31 December 20X1. It was decided to write off debts totalling £38,000 and to adjust the allowance for receivables to 10% of the receivables.What charge for receivables expense should appear in the company's statement of profit or loss for the year ended 31 December 20X2? A: £74,200 B: £51,800 C: £28,000 D: £24,200

  • 2022-07-27 问题

    要设计一个闭环控制系统,希望阶跃响应的调整时间约0.1 s,超调量约5%。 (1) 估计开环剪切频率应为____ A: 23 /s B: 31 /s C: 37 /s

    要设计一个闭环控制系统,希望阶跃响应的调整时间约0.1 s,超调量约5%。 (1) 估计开环剪切频率应为____ A: 23 /s B: 31 /s C: 37 /s

  • 2021-04-14 问题

    某患者APIT为36s/31s、PT为12.5s/11s,若临床上有较明显的延迟性出血,需关注可能何种因子异常

    某患者APIT为36s/31s、PT为12.5s/11s,若临床上有较明显的延迟性出血,需关注可能何种因子异常

  • 2022-06-18 问题

    以下哪些语句正确?() A: doublesnow[]=newdouble[31]; B: doublesnow[31]=newarray[31]; C: doublesnow[31]=newarray; D: double[]snow=newdouble[31];

    以下哪些语句正确?() A: doublesnow[]=newdouble[31]; B: doublesnow[31]=newarray[31]; C: doublesnow[31]=newarray; D: double[]snow=newdouble[31];

  • 2022-06-04 问题

    5/7,7/12,12/19,19/31,(<br/>)。() A: 31/49 B: 1/39 C: 31/50 D: 50/31

    5/7,7/12,12/19,19/31,(<br/>)。() A: 31/49 B: 1/39 C: 31/50 D: 50/31

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