• 2022-05-31 问题

    About the average weight of a child, which one of the following may not true? A: 3.5 kg at birth B: 5 kg at 6 m C: 10 kg at 1 yr D: 20 kg at 5 yr

    About the average weight of a child, which one of the following may not true? A: 3.5 kg at birth B: 5 kg at 6 m C: 10 kg at 1 yr D: 20 kg at 5 yr

  • 2022-06-08 问题

    某个体的基因型是YYRr,它在减数分裂后形成的配子是() A: YR和YR B: Yr和Yr C: Yy和Rr D: YR和Yr

    某个体的基因型是YYRr,它在减数分裂后形成的配子是() A: YR和YR B: Yr和Yr C: Yy和Rr D: YR和Yr

  • 2022-06-07 问题

    谓词公式”x(P(x)Ú $yR(y))→Q(x)中量词”x的辖域是() A: P(x)Ú $yR(y) B: P(x) C: $yR(y) D: (P(x)Ú $yR(y))→Q(x)

    谓词公式”x(P(x)Ú $yR(y))→Q(x)中量词”x的辖域是() A: P(x)Ú $yR(y) B: P(x) C: $yR(y) D: (P(x)Ú $yR(y))→Q(x)

  • 2022-06-07 问题

    谓词公式(∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)中量词∀x的辖域是 . A: P(x)∨∃yR(y) B: P(x) C: (P(x)∨∃yR(y))→Q(x) D: (∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)

    谓词公式(∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)中量词∀x的辖域是 . A: P(x)∨∃yR(y) B: P(x) C: (P(x)∨∃yR(y))→Q(x) D: (∀x(P(x)∨∃yR(y)))→Q(x)∧R(x)

  • 2022-06-07 问题

    谓词公式"x(P(x)Ú$yR(y))®Q(x)中量词"x的作用域是 A: "x(P(x)Ú$yR(y)) B: P(x)Ú$yR(y) C: P(x) D: P(x),Q(x)

    谓词公式"x(P(x)Ú$yR(y))®Q(x)中量词"x的作用域是 A: "x(P(x)Ú$yR(y)) B: P(x)Ú$yR(y) C: P(x) D: P(x),Q(x)

  • 2022-06-07 问题

    谓词公式∀x(P(x)∨∃yR(y))→Q(x)中量词∀x的辖域是() A: ∀x(P(x)∨∃yR(y)) B: P(x) C: P(x)∨∃yR(y) D: P(x),Q(x)

    谓词公式∀x(P(x)∨∃yR(y))→Q(x)中量词∀x的辖域是() A: ∀x(P(x)∨∃yR(y)) B: P(x) C: P(x)∨∃yR(y) D: P(x),Q(x)

  • 2022-06-07 问题

    谓词公式"xP(x,y)Ù$t(Q(t,z)→"x$yR(x,y,t))中量词$t的辖域是() A: $t(Q(t,z)→"x$yR(x,y,t)) B: Q(t,z)→"x$yR(x,y,t) C: "x$yR(x,y,t) D: Q(t,z)

    谓词公式"xP(x,y)Ù$t(Q(t,z)→"x$yR(x,y,t))中量词$t的辖域是() A: $t(Q(t,z)→"x$yR(x,y,t)) B: Q(t,z)→"x$yR(x,y,t) C: "x$yR(x,y,t) D: Q(t,z)

  • 2022-06-07 问题

    一阶公式"∀x(P(x)∨∃yR(y))→Q(x)中量词""x的辖域是()。 A: (P(x)∨∃yR(y)) B: P(x) C: ∀x(P(x)∨∃yR(y)) D: (P(x)∨∃R(y))→Q(x)

    一阶公式"∀x(P(x)∨∃yR(y))→Q(x)中量词""x的辖域是()。 A: (P(x)∨∃yR(y)) B: P(x) C: ∀x(P(x)∨∃yR(y)) D: (P(x)∨∃R(y))→Q(x)

  • 2021-04-14 问题

    某电动机的代号为YR,这是一种

    某电动机的代号为YR,这是一种

  • 2022-06-04 问题

    In our note-taking, "yr" stands for "year". Here abbreviations are used in note-taking.( )

    In our note-taking, "yr" stands for "year". Here abbreviations are used in note-taking.( )

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