• 2022-07-02 问题

    集成计数器74LS161的逻辑功能表中,如何使计数器处于保持状态()。 A: CR’=0,LD‘=1,控制端EP和ET设置为0 B: CR’=1,LD‘=1,控制端EP或ET设置为0 C: CR’=0,LD‘=1,控制端EP或ET设置为0 D: CR’=1,LD‘=0,控制端EP或ET设置为1

    集成计数器74LS161的逻辑功能表中,如何使计数器处于保持状态()。 A: CR’=0,LD‘=1,控制端EP和ET设置为0 B: CR’=1,LD‘=1,控制端EP或ET设置为0 C: CR’=0,LD‘=1,控制端EP或ET设置为0 D: CR’=1,LD‘=0,控制端EP或ET设置为1

  • 2022-06-01 问题

    下列关于治疗指数计算方法正确的是: A: ED<sub >50</sub>/ LD<sub >50</sub> B: .LD<sub >50</sub>/ED<sub >50</sub> C: ED<sub >9</sub><sub >0</sub>/ LD<sub >1</sub><sub >0</sub> D: LD<sub>1</sub><sub>0</sub>/ED<sub>9</sub><sub>0</sub>

    下列关于治疗指数计算方法正确的是: A: ED<sub >50</sub>/ LD<sub >50</sub> B: .LD<sub >50</sub>/ED<sub >50</sub> C: ED<sub >9</sub><sub >0</sub>/ LD<sub >1</sub><sub >0</sub> D: LD<sub>1</sub><sub>0</sub>/ED<sub>9</sub><sub>0</sub>

  • 2022-06-15 问题

    急性心肌梗死病人发病期血清乳酸脱氢酶(LDH)同工酶电泳结果为() A: LD<sub>2</sub>>LD<sub>1</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> B: LD<sub>5</sub>>LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub> C: LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> D: LD<sub>5</sub>>LD<sub>3</sub>>LD<sub>2</sub>>LD<sub>4</sub>>LD<sub>5</sub> E: LD<sub>1</sub>>LD<sub>1</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>2</sub>

    急性心肌梗死病人发病期血清乳酸脱氢酶(LDH)同工酶电泳结果为() A: LD<sub>2</sub>>LD<sub>1</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> B: LD<sub>5</sub>>LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub> C: LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> D: LD<sub>5</sub>>LD<sub>3</sub>>LD<sub>2</sub>>LD<sub>4</sub>>LD<sub>5</sub> E: LD<sub>1</sub>>LD<sub>1</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>2</sub>

  • 2022-10-27 问题

    急性心肌梗死患者心脏组织中LD同工酶的含量为() A: ALD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> B: BLD<sub>2</sub>>LD<sub>1</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> C: CLD<sub>4</sub>>LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>5</sub> D: DLD<sub>5</sub>>LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub> E: ELD<sub>3</sub>>LD<sub>5</sub>>LD<sub>4</sub>>LD<sub>1</sub>>LD<sub>2</sub>

    急性心肌梗死患者心脏组织中LD同工酶的含量为() A: ALD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> B: BLD<sub>2</sub>>LD<sub>1</sub>>LD<sub>3</sub>>LD<sub>4</sub>>LD<sub>5</sub> C: CLD<sub>4</sub>>LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>5</sub> D: DLD<sub>5</sub>>LD<sub>1</sub>>LD<sub>2</sub>>LD<sub>3</sub>>LD<sub>4</sub> E: ELD<sub>3</sub>>LD<sub>5</sub>>LD<sub>4</sub>>LD<sub>1</sub>>LD<sub>2</sub>

  • 2022-06-16 问题

    以下HDB3码中,哪些可以确定其中有误码 A: +1 0 0 0 -1 0 +1 -1 +1 0 0 +1 0 -1 +1 -1 0 0 -1 +1…… B: +1 0 0 -1 +1 0 0 0 +1 -1 0 0 -1 0 0 0 +1 0 0 +1 -1…… C: -1 0 0 0 -1 0 +1 0 0 0 +1 -1 +1 0 0 +1 0 0 -1 +1…… D: -1 0 +1 0 0 0 -1 +1 0 0 0 +1 -1 +1 -1 0 0 -1 +1 0 -1……

    以下HDB3码中,哪些可以确定其中有误码 A: +1 0 0 0 -1 0 +1 -1 +1 0 0 +1 0 -1 +1 -1 0 0 -1 +1…… B: +1 0 0 -1 +1 0 0 0 +1 -1 0 0 -1 0 0 0 +1 0 0 +1 -1…… C: -1 0 0 0 -1 0 +1 0 0 0 +1 -1 +1 0 0 +1 0 0 -1 +1…… D: -1 0 +1 0 0 0 -1 +1 0 0 0 +1 -1 +1 -1 0 0 -1 +1 0 -1……

  • 2021-04-14 问题

    1 1 1 1 1 0 1 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 0 1

    1 1 1 1 1 0 1 1 1 1 0 0 1 1 1 0 0 0 1 1 0 0 0 0 1

  • 2022-06-19 问题

    ‍对HDB3码-1000+100-1000-1+1000+1-1+1-100-1+1-1进行译码,结果是( )。‌ A: 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 1 B: 1 0 0 0 1 0 0 1 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 1 C: 1 0 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 1 1 0 0 0 0 1 1 D: 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 1 1

    ‍对HDB3码-1000+100-1000-1+1000+1-1+1-100-1+1-1进行译码,结果是( )。‌ A: 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0 0 1 1 B: 1 0 0 0 1 0 0 1 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 1 C: 1 0 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 1 1 0 0 0 0 1 1 D: 1 0 0 0 1 0 0 1 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 1 1

  • 2021-04-14 问题

    编写程序,创建下列10*10的数组,数组边界全为1,里面全为0。 [[1 1 1 1 1 1 1 1 1 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 1 1 1 1 1 1 1 1 1]]

    编写程序,创建下列10*10的数组,数组边界全为1,里面全为0。 [[1 1 1 1 1 1 1 1 1 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 0 0 0 0 0 0 0 0 1] [1 1 1 1 1 1 1 1 1 1]]

  • 2022-06-16 问题

    对信码1000100100001000011000011进行HDB3编码,结果可能是( )。 A: -1 0 0 0 +1 0 0 -1 0 0 0 -V +1 0 0 0 +V -1 +1 -B 0 0 -V +1 -1 B: +1 0 0 0 -1 0 0 +1 0 0 0 +V -1 0 0 0 -V +1 -1 +B 0 0 +V -1 +1 C: +1 0 0 0 -1 0 0 +1 0 0 0 +1 -1 0 0 0 -1 +1 -1 +1 0 0 +1 -1 +1 D: -1 0 0 0 +1 0 0 -1 0 0 0 +V +1 0 0 0 +V -1 +1 +B 0 0 -V +1 -1

    对信码1000100100001000011000011进行HDB3编码,结果可能是( )。 A: -1 0 0 0 +1 0 0 -1 0 0 0 -V +1 0 0 0 +V -1 +1 -B 0 0 -V +1 -1 B: +1 0 0 0 -1 0 0 +1 0 0 0 +V -1 0 0 0 -V +1 -1 +B 0 0 +V -1 +1 C: +1 0 0 0 -1 0 0 +1 0 0 0 +1 -1 0 0 0 -1 +1 -1 +1 0 0 +1 -1 +1 D: -1 0 0 0 +1 0 0 -1 0 0 0 +V +1 0 0 0 +V -1 +1 +B 0 0 -V +1 -1

  • 2022-07-24 问题

    1⊙1⊙1⊙1⊙0⊙0⊙0⊙0等于?() A: 0⊙0⊙0⊙1 B: 1⊕1⊕1⊕1 C: 1⊙0⊙0⊙1 D: 1⊕1⊙0⊙0

    1⊙1⊙1⊙1⊙0⊙0⊙0⊙0等于?() A: 0⊙0⊙0⊙1 B: 1⊕1⊕1⊕1 C: 1⊙0⊙0⊙1 D: 1⊕1⊙0⊙0

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