• 2022-11-02 问题

    当计算换热器的换热面积是,当 ( )时,可按算术平均温差代替对数平均温差进行计算,其误差不到4%。 A: Δta / Δtb ≤ 3 B: Δta / Δtb ≤ 4 C: Δta / Δtb ≤ 2 D: Δta / Δtb ≤ 5

    当计算换热器的换热面积是,当 ( )时,可按算术平均温差代替对数平均温差进行计算,其误差不到4%。 A: Δta / Δtb ≤ 3 B: Δta / Δtb ≤ 4 C: Δta / Δtb ≤ 2 D: Δta / Δtb ≤ 5

  • 2022-06-09 问题

    哪个选项是以下程序的输出结果() d={'1':1,'2':2,3':3,'4':4}; d2=d; d['2']=5; print(d['2']+d2['2']) A: 7 B: 10 C: 2 D: 5

    哪个选项是以下程序的输出结果() d={'1':1,'2':2,3':3,'4':4}; d2=d; d['2']=5; print(d['2']+d2['2']) A: 7 B: 10 C: 2 D: 5

  • 2022-06-06 问题

    ( )[sin(5x+2)]'=cos(5x+2). A: 5 B: 1/5 C: 2 D: 1/2

    ( )[sin(5x+2)]'=cos(5x+2). A: 5 B: 1/5 C: 2 D: 1/2

  • 2022-06-03 问题

    大数据的一个重要特征就是数据量大。ZB和TB之间的换算关系是以下哪一个?() A: 1ZB=2的10次方TB B: 1ZB=2的20次方TB C: 1ZB=2的30次方TB D: 1ZB=240TB

    大数据的一个重要特征就是数据量大。ZB和TB之间的换算关系是以下哪一个?() A: 1ZB=2的10次方TB B: 1ZB=2的20次方TB C: 1ZB=2的30次方TB D: 1ZB=240TB

  • 2022-06-09 问题

    以下程序的输出结果是()。d={'1':1,'2':2,'3':3,'4':4}d2=dd['2']=5print(d['2']+d2['2']) A: 2 B: 7 C: 10 D: 5

    以下程序的输出结果是()。d={'1':1,'2':2,'3':3,'4':4}d2=dd['2']=5print(d['2']+d2['2']) A: 2 B: 7 C: 10 D: 5

  • 2022-06-03 问题

    现有列表a = ["1", 2, "34", "5"],则sorted(a)的输出是什么? A: ["1", 2, "34", "5"] B: ["1", 2, "5", "34"] C: ['34', '5', 2, '1'] D: 报错

    现有列表a = ["1", 2, "34", "5"],则sorted(a)的输出是什么? A: ["1", 2, "34", "5"] B: ["1", 2, "5", "34"] C: ['34', '5', 2, '1'] D: 报错

  • 2022-06-05 问题

    6|-5|7|5|1|*2|[音频]/module/audioplay.html?objectid=aba77f919b8f629c3924ccc0c22f6314

    6|-5|7|5|1|*2|[音频]/module/audioplay.html?objectid=aba77f919b8f629c3924ccc0c22f6314

  • 2022-06-12 问题

    在下面的计算过程后面填上运用的运算律.<br/>计算:(-2)+(+3)+(-5)+(+4).<br/>解:原式=(-2)+(-5)+(+3)+(+4)(____)<br/>=&#91;(-2)+(-5)&#93;+&#91;(+3)+(+4)&#93;(____)<br/>=(-7)+(+7)=0.

    在下面的计算过程后面填上运用的运算律.<br/>计算:(-2)+(+3)+(-5)+(+4).<br/>解:原式=(-2)+(-5)+(+3)+(+4)(____)<br/>=&#91;(-2)+(-5)&#93;+&#91;(+3)+(+4)&#93;(____)<br/>=(-7)+(+7)=0.

  • 2022-06-09 问题

    哪个选项是以下程序的输出结果?()1d={‘1’:1,’2’:2,’3’:3,’4’:4}2d2=d3d&#91;‘2’&#93;=54print(d&#91;‘2’&#93;+d2&#91;‘2’&#93;) A: 2 B: 5 C: 7 D: 10

    哪个选项是以下程序的输出结果?()1d={‘1’:1,’2’:2,’3’:3,’4’:4}2d2=d3d&#91;‘2’&#93;=54print(d&#91;‘2’&#93;+d2&#91;‘2’&#93;) A: 2 B: 5 C: 7 D: 10

  • 2022-05-27 问题

    Q4 – Which proposal is true? A: 1- Annual risk of progression from latent TB infection (LTBI) to TB disease in HIV negative subjects is 5%-10% B: 2- Antiretroviral therapy (ARV) decreases the risk of active TB in HIV positive patients C: 3- Antiretroviral therapy (ARV) must be initiated early (2 weeks) after active TB treatment in all forms of tuberculosis, including those with central nervous system (CNS) involvement

    Q4 – Which proposal is true? A: 1- Annual risk of progression from latent TB infection (LTBI) to TB disease in HIV negative subjects is 5%-10% B: 2- Antiretroviral therapy (ARV) decreases the risk of active TB in HIV positive patients C: 3- Antiretroviral therapy (ARV) must be initiated early (2 weeks) after active TB treatment in all forms of tuberculosis, including those with central nervous system (CNS) involvement

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