• 2022-06-19 问题

    求每亩(666.7m 2)耕层0-20cm土壤干重?(已知土壤容重为1.15 g/cm 3 ),正确解法是? A: 666.7×0.2×1.15=153t B: 666.7×0.2×1.15=153kg C: 666.7×0.2×1.15=153g D: 666.7×0.2×1150=153000t

    求每亩(666.7m 2)耕层0-20cm土壤干重?(已知土壤容重为1.15 g/cm 3 ),正确解法是? A: 666.7×0.2×1.15=153t B: 666.7×0.2×1.15=153kg C: 666.7×0.2×1.15=153g D: 666.7×0.2×1150=153000t

  • 2022-06-17 问题

    已知集合M={﹣1,1},,则M∩N=[    ]

    已知集合M={﹣1,1},,则M∩N=[    ]

  • 2022-06-17 问题

    已知集合M={x|},N={},则M∩N=[  ]

    已知集合M={x|},N={},则M∩N=[  ]

  • 2022-06-11 问题

    下面代码的输出结果是‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬li = ["hello",'se',[["m","n"],["h","kelly"],'all'],123,446]print(li[2][1][1]) A: n B: h C: m D: kelly

    下面代码的输出结果是‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬li = ["hello",'se',[["m","n"],["h","kelly"],'all'],123,446]print(li[2][1][1]) A: n B: h C: m D: kelly

  • 2022-06-11 问题

    下列代码的输出结果是( )。li = ["hello",'se',[["m","n"],["h","kelly"],'all'],123,446]print(li[2][1][1]) A: h B: kelly C: n D: m

    下列代码的输出结果是( )。li = ["hello",'se',[["m","n"],["h","kelly"],'all'],123,446]print(li[2][1][1]) A: h B: kelly C: n D: m

  • 2022-06-07 问题

    Compute H−− with respect to point A where H−−=[I][ω] and [ω]T=[ωxωyωz]. Please answer using m, L, ϕ, and ω. Note that m is a point mass.H=i^:______ j^:______ k^:______

    Compute H−− with respect to point A where H−−=[I][ω] and [ω]T=[ωxωyωz]. Please answer using m, L, ϕ, and ω. Note that m is a point mass.H=i^:______ j^:______ k^:______

  • 2022-11-04 问题

    已知集合M={-1,1},,则M∩N=[    ]A.{-1,1}

    已知集合M={-1,1},,则M∩N=[    ]A.{-1,1}

  • 2022-06-03 问题

    ​插入幻灯片的组合键是( ) 。​ 未知类型:{'options': ['[Ctrl]+S', '[Ctrl]+M', '[Alt]+[F5]', '[Shift]+[F10]'], 'type': 102}

    ​插入幻灯片的组合键是( ) 。​ 未知类型:{'options': ['[Ctrl]+S', '[Ctrl]+M', '[Alt]+[F5]', '[Shift]+[F10]'], 'type': 102}

  • 2022-11-04 问题

    已知集合M={0,1},集合T={0,1,2},那么集合M∪T=[    ]

    已知集合M={0,1},集合T={0,1,2},那么集合M∪T=[    ]

  • 2022-11-02 问题

    热辐射射线波长范围在( )之间。[1分] A: 0.3μm~100μm B: 0.3μm~1000μm C: 0.3μm~10000μm D: 0.3μm~100000μm

    热辐射射线波长范围在( )之间。[1分] A: 0.3μm~100μm B: 0.3μm~1000μm C: 0.3μm~10000μm D: 0.3μm~100000μm

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