• 2022-06-06 问题

    The conference was ______ as a great success. (U4-A) A: hacked B: halted C: hailed D: hammered

    The conference was ______ as a great success. (U4-A) A: hacked B: halted C: hailed D: hammered

  • 2022-06-06 问题

    Developments on this issue will be dealt with in a ______report. (U4-A) A: subnormal B: subsequent C: subordinate D: submissive

    Developments on this issue will be dealt with in a ______report. (U4-A) A: subnormal B: subsequent C: subordinate D: submissive

  • 2022-06-01 问题

    (1)u=u_R+u_L+u_C (2)U=U_R+U_L+U_C (3)U=U_R+j(U_L-U_C) (4)U̇=U̇_R+U̇_L+U̇_C (5)U̇=U̇_R+j(U̇_L+U̇_C) 上述公式中正确的是() A: (1)(2)(3)(4) B: (3)(4)(5) C: (1)(4)(5) D: 全都正确

    (1)u=u_R+u_L+u_C (2)U=U_R+U_L+U_C (3)U=U_R+j(U_L-U_C) (4)U̇=U̇_R+U̇_L+U̇_C (5)U̇=U̇_R+j(U̇_L+U̇_C) 上述公式中正确的是() A: (1)(2)(3)(4) B: (3)(4)(5) C: (1)(4)(5) D: 全都正确

  • 2022-06-06 问题

    The school has ______ a successful relationship with the local community. (U4-A) A: estimated B: escaped C: established D: escorted

    The school has ______ a successful relationship with the local community. (U4-A) A: estimated B: escaped C: established D: escorted

  • 2022-06-19 问题

    下面哪一种采样格式不是图像子采样?() A: Y:U:V=4:1:1 B: Y:U:V=4:2:2 C: Y:U:V=4:4:4

    下面哪一种采样格式不是图像子采样?() A: Y:U:V=4:1:1 B: Y:U:V=4:2:2 C: Y:U:V=4:4:4

  • 2022-06-15 问题

    |x|>4的解集用区间表示是() A: (-4,4) B: [-4,4] C: (-∞,-4)U(4,+∞) D: (-∞,-4]U[4,+∞)

    |x|>4的解集用区间表示是() A: (-4,4) B: [-4,4] C: (-∞,-4)U(4,+∞) D: (-∞,-4]U[4,+∞)

  • 2022-06-05 问题

    Everything is a ______ when I take my glasses off. (U4-A) A: lu B: lu C: laze D: lind

    Everything is a ______ when I take my glasses off. (U4-A) A: lu B: lu C: laze D: lind

  • 2022-06-05 问题

    求图中电压Uab,已知电阻R=4Ω。[img=92x123]17e43e641248870.png[/img] A: U=IR=8V B: U=-IR=-8V C: U=-IR=-(-2)×4=8V D: U=IR=(-2)×4=-8V

    求图中电压Uab,已知电阻R=4Ω。[img=92x123]17e43e641248870.png[/img] A: U=IR=8V B: U=-IR=-8V C: U=-IR=-(-2)×4=8V D: U=IR=(-2)×4=-8V

  • 2022-06-12 问题

    频谱函数F(jw)=2/(jw+3)+4/(jw-2)所对应的信号f(t) A: 2(e)-3t次方u(t)-4(e)2t次方u(t) B: 4(e)2t次方u(t)-2(e)-3t次方u(t) C: 2(e)3t次方u(t)-4(e)-2t次方u(t) D: 4(e)-2t次方u(t)-2(e)3t次方u(t)

    频谱函数F(jw)=2/(jw+3)+4/(jw-2)所对应的信号f(t) A: 2(e)-3t次方u(t)-4(e)2t次方u(t) B: 4(e)2t次方u(t)-2(e)-3t次方u(t) C: 2(e)3t次方u(t)-4(e)-2t次方u(t) D: 4(e)-2t次方u(t)-2(e)3t次方u(t)

  • 2021-04-14 问题

    图4所示电路,电压u为()。图4

    图4所示电路,电压u为()。图4

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