• 2022-06-01 问题

    带极限偏差值的数值80±5%表示实测值或其计算值R在()范围内时符合标准要求。 A: ≤+0.05 B: ≥-0.05 C: -5%≤(R-80)/R≤5% D: -5%≤(R-80)/80≤5%

    带极限偏差值的数值80±5%表示实测值或其计算值R在()范围内时符合标准要求。 A: ≤+0.05 B: ≥-0.05 C: -5%≤(R-80)/R≤5% D: -5%≤(R-80)/80≤5%

  • 2022-07-01 问题

    弹奏这种伴奏音型的指法一般是() A: 4/21/5/21 B: 3/21/5/21 C: 5/21/5/21 D: 4/31/5/31

    弹奏这种伴奏音型的指法一般是() A: 4/21/5/21 B: 3/21/5/21 C: 5/21/5/21 D: 4/31/5/31

  • 2022-05-29 问题

    限制膨胀率试验方法中恒温恒湿箱的湿度为() A: (60±5)% B: (70±5)% C: (80±5)% D: 90%以上

    限制膨胀率试验方法中恒温恒湿箱的湿度为() A: (60±5)% B: (70±5)% C: (80±5)% D: 90%以上

  • 2022-06-07 问题

    A signal s(t)=3cos(20pt) (V) is quantized by a uniform quantizer, the step size of the quantizer is 0.1(V), then the minimal number of quantization level is L , the number of bits per sample is at least R , and the variance of the quantization error is T ([img=22x22]1803a28ec2869ac.png[/img]). A: L=60, R=5, T=0.000833 B: L=30, R=5, T=0.000833 C: L=60, R=5, T=0.001667 D: L=60, R=6, T=0.000833

    A signal s(t)=3cos(20pt) (V) is quantized by a uniform quantizer, the step size of the quantizer is 0.1(V), then the minimal number of quantization level is L , the number of bits per sample is at least R , and the variance of the quantization error is T ([img=22x22]1803a28ec2869ac.png[/img]). A: L=60, R=5, T=0.000833 B: L=30, R=5, T=0.000833 C: L=60, R=5, T=0.001667 D: L=60, R=6, T=0.000833

  • 2022-06-07 问题

    ‏A signal s(t)=3cos(20pt) (V) is quantized by a uniform quantizer, the step size of the quantizer is 0.1(V), then the minimal number of quantization level is L , the number of bits per sample is at least R , and the variance of the quantization error is T ([img=22x22]1802e166a76be1c.png[/img]).‎ A: L=60, R=5, T=0.000833 B: L=30, R=5, T=0.000833 C: L=60, R=5, T=0.001667 D: L=60, R=6, T=0.000833

    ‏A signal s(t)=3cos(20pt) (V) is quantized by a uniform quantizer, the step size of the quantizer is 0.1(V), then the minimal number of quantization level is L , the number of bits per sample is at least R , and the variance of the quantization error is T ([img=22x22]1802e166a76be1c.png[/img]).‎ A: L=60, R=5, T=0.000833 B: L=30, R=5, T=0.000833 C: L=60, R=5, T=0.001667 D: L=60, R=6, T=0.000833

  • 2022-07-26 问题

    数学表达式5R2,对应的表达式是()。 A: 5*R2 B: 5(R*R) C: 5*RR D: R*R*5

    数学表达式5R2,对应的表达式是()。 A: 5*R2 B: 5(R*R) C: 5*RR D: R*R*5

  • 2022-06-19 问题

    码长为31的汉明码,其监督位r应为( ) A: 5 B: 7 C: 6 D: 8

    码长为31的汉明码,其监督位r应为( ) A: 5 B: 7 C: 6 D: 8

  • 2021-04-14 问题

    编写如下程序: Private Sub Command1_Click() Dim score As Integer score = 90 If score > 80 Then r = 5 ElseIf score > 60 Then r = 3 Else r = 1 End If Print r End Sub 程序运行后,单击命令按钮Command1,输出结果为(______)。

    编写如下程序: Private Sub Command1_Click() Dim score As Integer score = 90 If score > 80 Then r = 5 ElseIf score > 60 Then r = 3 Else r = 1 End If Print r End Sub 程序运行后,单击命令按钮Command1,输出结果为(______)。

  • 2022-06-04 问题

    对辖区“四上”企业积极组织员工返岗,2020年3月31日前,实际在岗率达()以上的,给予最高5万元的支持。 A: 95% B: 80% C: 70% D: 60%

    对辖区“四上”企业积极组织员工返岗,2020年3月31日前,实际在岗率达()以上的,给予最高5万元的支持。 A: 95% B: 80% C: 70% D: 60%

  • 2022-05-25 问题

    食品保存的危险温度带的温度范围是( )。 A: 60~ 80℃ B: 0~ 60℃ C: 5 ~ 60℃ D: 20 ~ 50℃

    食品保存的危险温度带的温度范围是( )。 A: 60~ 80℃ B: 0~ 60℃ C: 5 ~ 60℃ D: 20 ~ 50℃

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