• 2022-06-05 问题

    图示工件大孔作为程序原点,则其它各孔中心位置为()。 A:  X1=27.713,X2=10.154  Y1=16,Y2=20.952 B:  X1=27.713,X2=10.143,Y1=16,Y2=21.751 C:  X1=27.713,X2=10.143,Y1=16,Y2=20.952 D:  X1=27.713,X2=10.143,Y1=15.9,Y2=21.751

    图示工件大孔作为程序原点,则其它各孔中心位置为()。 A:  X1=27.713,X2=10.154  Y1=16,Y2=20.952 B:  X1=27.713,X2=10.143,Y1=16,Y2=21.751 C:  X1=27.713,X2=10.143,Y1=16,Y2=20.952 D:  X1=27.713,X2=10.143,Y1=15.9,Y2=21.751

  • 2022-07-23 问题

    下列各物质沸点高低顺序中正确的是 未知类型:{'options': ['[tex=10.143x1.071]2AlGveohlOV5vTKXcKI7hLPibIDjQMOrWD5EwtAIfQaEhBK0z2/gtH60vXjVO7lowoyDjRw7vqG8bLsUgTXSCA==[/tex]', '[tex=11.857x1.214]fefqjYOm+vsntSmwwfQlis3Ks+2ngev7awaZZioHrzP11J2Hu8aUWk49RJc+8tC8TFWNs42k4jKWuKNglUFrWRgCz124zHxb8jiBD/N8SOvOCOFzO9L0jfNxqGnk7SbYFjrkTHQexmthxwye67h/dw==[/tex]', '[tex=8.571x1.214]ggK9heh7nHWz78RGXVW3Xc5pzmDhV+Ia+IFIncQezj8DxISShKnewXVESn8l7HXEytW060Fc9geHZVCQCxWuAw==[/tex]', '[tex=8.786x1.214]rd2M45QaKjfWe3LgDO06DV7QMjgT6MXhrwKxdJBhbCjHw2n+wWfrU9Ih8Gdtcv2zmvcUMez38hYRcTgNhLgVHA==[/tex]'], 'type': 102}

    下列各物质沸点高低顺序中正确的是 未知类型:{'options': ['[tex=10.143x1.071]2AlGveohlOV5vTKXcKI7hLPibIDjQMOrWD5EwtAIfQaEhBK0z2/gtH60vXjVO7lowoyDjRw7vqG8bLsUgTXSCA==[/tex]', '[tex=11.857x1.214]fefqjYOm+vsntSmwwfQlis3Ks+2ngev7awaZZioHrzP11J2Hu8aUWk49RJc+8tC8TFWNs42k4jKWuKNglUFrWRgCz124zHxb8jiBD/N8SOvOCOFzO9L0jfNxqGnk7SbYFjrkTHQexmthxwye67h/dw==[/tex]', '[tex=8.571x1.214]ggK9heh7nHWz78RGXVW3Xc5pzmDhV+Ia+IFIncQezj8DxISShKnewXVESn8l7HXEytW060Fc9geHZVCQCxWuAw==[/tex]', '[tex=8.786x1.214]rd2M45QaKjfWe3LgDO06DV7QMjgT6MXhrwKxdJBhbCjHw2n+wWfrU9Ih8Gdtcv2zmvcUMez38hYRcTgNhLgVHA==[/tex]'], 'type': 102}

  • 2022-07-23 问题

    下列各物质沸点高低顺序中正确的是 未知类型:{'options': ['[tex=10.143x1.071]2AlGveohlOV5vTKXcKI7hLPibIDjQMOrWD5EwtAIfQaEhBK0z2/gtH60vXjVO7lowoyDjRw7vqG8bLsUgTXSCA==[/tex]', '[tex=11.857x1.214]fefqjYOm+vsntSmwwfQlis3Ks+2ngev7awaZZioHrzP11J2Hu8aUWk49RJc+8tC8TFWNs42k4jKWuKNglUFrWRgCz124zHxb8jiBD/N8SOvOCOFzO9L0jfNxqGnk7SbYFjrkTHQexmthxwye67h/dw==[/tex]', '[tex=8.571x1.214]ggK9heh7nHWz78RGXVW3Xc5pzmDhV+Ia+IFIncQezj8DxISShKnewXVESn8l7HXEytW060Fc9geHZVCQCxWuAw==[/tex]', '[tex=8.786x1.214]rd2M45QaKjfWe3LgDO06DV7QMjgT6MXhrwKxdJBhbCjHw2n+wWfrU9Ih8Gdtcv2zmvcUMez38hYRcTgNhLgVHA==[/tex]'], 'type': 102}

    下列各物质沸点高低顺序中正确的是 未知类型:{'options': ['[tex=10.143x1.071]2AlGveohlOV5vTKXcKI7hLPibIDjQMOrWD5EwtAIfQaEhBK0z2/gtH60vXjVO7lowoyDjRw7vqG8bLsUgTXSCA==[/tex]', '[tex=11.857x1.214]fefqjYOm+vsntSmwwfQlis3Ks+2ngev7awaZZioHrzP11J2Hu8aUWk49RJc+8tC8TFWNs42k4jKWuKNglUFrWRgCz124zHxb8jiBD/N8SOvOCOFzO9L0jfNxqGnk7SbYFjrkTHQexmthxwye67h/dw==[/tex]', '[tex=8.571x1.214]ggK9heh7nHWz78RGXVW3Xc5pzmDhV+Ia+IFIncQezj8DxISShKnewXVESn8l7HXEytW060Fc9geHZVCQCxWuAw==[/tex]', '[tex=8.786x1.214]rd2M45QaKjfWe3LgDO06DV7QMjgT6MXhrwKxdJBhbCjHw2n+wWfrU9Ih8Gdtcv2zmvcUMez38hYRcTgNhLgVHA==[/tex]'], 'type': 102}

  • 2022-07-24 问题

    下列各物质沸点高低顺序中正确的是 未知类型:{'options': ['[tex=10.143x1.071]2AlGveohlOV5vTKXcKI7hLPibIDjQMOrWD5EwtAIfQaEhBK0z2/gtH60vXjVO7lowoyDjRw7vqG8bLsUgTXSCA==[/tex]', '[tex=11.857x1.214]fefqjYOm+vsntSmwwfQlis3Ks+2ngev7awaZZioHrzP11J2Hu8aUWk49RJc+8tC8TFWNs42k4jKWuKNglUFrWRgCz124zHxb8jiBD/N8SOvOCOFzO9L0jfNxqGnk7SbYFjrkTHQexmthxwye67h/dw==[/tex]', '[tex=8.571x1.214]ggK9heh7nHWz78RGXVW3Xc5pzmDhV+Ia+IFIncQezj8DxISShKnewXVESn8l7HXEytW060Fc9geHZVCQCxWuAw==[/tex]', '[tex=8.786x1.214]rd2M45QaKjfWe3LgDO06DV7QMjgT6MXhrwKxdJBhbCjHw2n+wWfrU9Ih8Gdtcv2zmvcUMez38hYRcTgNhLgVHA==[/tex]'], 'type': 102}

    下列各物质沸点高低顺序中正确的是 未知类型:{'options': ['[tex=10.143x1.071]2AlGveohlOV5vTKXcKI7hLPibIDjQMOrWD5EwtAIfQaEhBK0z2/gtH60vXjVO7lowoyDjRw7vqG8bLsUgTXSCA==[/tex]', '[tex=11.857x1.214]fefqjYOm+vsntSmwwfQlis3Ks+2ngev7awaZZioHrzP11J2Hu8aUWk49RJc+8tC8TFWNs42k4jKWuKNglUFrWRgCz124zHxb8jiBD/N8SOvOCOFzO9L0jfNxqGnk7SbYFjrkTHQexmthxwye67h/dw==[/tex]', '[tex=8.571x1.214]ggK9heh7nHWz78RGXVW3Xc5pzmDhV+Ia+IFIncQezj8DxISShKnewXVESn8l7HXEytW060Fc9geHZVCQCxWuAw==[/tex]', '[tex=8.786x1.214]rd2M45QaKjfWe3LgDO06DV7QMjgT6MXhrwKxdJBhbCjHw2n+wWfrU9Ih8Gdtcv2zmvcUMez38hYRcTgNhLgVHA==[/tex]'], 'type': 102}

  • 2022-06-30 问题

    下列变量组()是一个闭回路。 A: {x,x,x,x,x,x} B: {x,x,x,x,x} C: {x,x,x,x,x,x} D: {x,x,x,x,x,x}

    下列变量组()是一个闭回路。 A: {x,x,x,x,x,x} B: {x,x,x,x,x} C: {x,x,x,x,x,x} D: {x,x,x,x,x,x}

  • 2021-04-14 问题

    以下谓词蕴含式正确的是(): (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)

    以下谓词蕴含式正确的是(): (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)

  • 2021-04-14 问题

    以下谓词蕴含式正确的是(): (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)

    以下谓词蕴含式正确的是(): (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)

  • 2022-06-29 问题

    下列式中错误的是: A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)

    下列式中错误的是: A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)

  • 2022-06-25 问题

    判断下列推证是否正确。 (∀x)(A(x)→B(x))⇔(∀x)(¬A(x)∨B(x)) ⇔(∀x)¬( A(x)∧¬B(x) ) ⇔¬(∃x) ( A(x)∧¬B(x) ) ⇔¬( (∃x)A(x)∧(∃x)¬B(x) ) ⇔¬(∃x)A(x)∨¬(∃x)¬B(x) ⇔¬(∃x)A(x)∨(∀x)B(x) ⇔(∃x)A(x)→(∀x)B(x)

    判断下列推证是否正确。 (∀x)(A(x)→B(x))⇔(∀x)(¬A(x)∨B(x)) ⇔(∀x)¬( A(x)∧¬B(x) ) ⇔¬(∃x) ( A(x)∧¬B(x) ) ⇔¬( (∃x)A(x)∧(∃x)¬B(x) ) ⇔¬(∃x)A(x)∨¬(∃x)¬B(x) ⇔¬(∃x)A(x)∨(∀x)B(x) ⇔(∃x)A(x)→(∀x)B(x)

  • 2022-06-12 问题

    以下谓词公式中,( )不是逻辑有效式。 A: ($x)(P(x)∧Q(x)) Þ ($x) P(x)∧($x) Q(x) B: ("x)(P(x)∧Q(x)) Þ ("x) P(x)∧("x) Q(x) C: ($x)(P(x)∧Q(x)) Û ($x) P(x)∧($x) Q(x) D: ("x)(P(x)∧Q(x)) Û ("x) P(x)∧("x) Q(x)

    以下谓词公式中,( )不是逻辑有效式。 A: ($x)(P(x)∧Q(x)) Þ ($x) P(x)∧($x) Q(x) B: ("x)(P(x)∧Q(x)) Þ ("x) P(x)∧("x) Q(x) C: ($x)(P(x)∧Q(x)) Û ($x) P(x)∧($x) Q(x) D: ("x)(P(x)∧Q(x)) Û ("x) P(x)∧("x) Q(x)

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