• 2022-06-03 问题

    上述哪一项为2型糖尿病() A: GDM B: ICA C: LADA D: MODY E: GAD

    上述哪一项为2型糖尿病() A: GDM B: ICA C: LADA D: MODY E: GAD

  • 2022-06-12 问题

    上述哪一项为2型糖尿病上述哪一项为妊娠期糖尿病 A: GDM B: ICA C: LADA D: MODY E: GAD

    上述哪一项为2型糖尿病上述哪一项为妊娠期糖尿病 A: GDM B: ICA C: LADA D: MODY E: GAD

  • 2022-05-29 问题

    Fill in the blankFor the expressionf(t)=tε(t)+2ε(t−2)−tε(t−2),f(3)=______ .

    Fill in the blankFor the expressionf(t)=tε(t)+2ε(t−2)−tε(t−2),f(3)=______ .

  • 2022-07-26 问题

    一阶常微分方程[img=152x26]1802e4d6075ee4f.png[/img]的通解为 A: sin(2*t)/5-cos(2*t)/10+C*exp(-4*t) B: sin(2*t)/7+cos(2*t)/5-C*exp(-3*t) C: sin(2*t)/7-C*cos(2*t)/10+C*exp(-2*t) D: sin(2*t)/7-cos(2*t)/7+C*exp(-5*t)

    一阶常微分方程[img=152x26]1802e4d6075ee4f.png[/img]的通解为 A: sin(2*t)/5-cos(2*t)/10+C*exp(-4*t) B: sin(2*t)/7+cos(2*t)/5-C*exp(-3*t) C: sin(2*t)/7-C*cos(2*t)/10+C*exp(-2*t) D: sin(2*t)/7-cos(2*t)/7+C*exp(-5*t)

  • 2022-11-02 问题

    已知向量组\(\alpha_{1}=(1,1,2)^T,\alpha_{2}=(3,t,1)^T,\alpha_{3}=(0,2,-t)^T,\)线性相关\(,\)则\(t\)=\(( \quad )\)。 A: 、\(t=5\)或\(t=-2\) B: 、\(t=5\)或\(t=2\) C: 、\(t=-5\)或\(t=2\) D: 、\(t=1\)或\(t=-2\)

    已知向量组\(\alpha_{1}=(1,1,2)^T,\alpha_{2}=(3,t,1)^T,\alpha_{3}=(0,2,-t)^T,\)线性相关\(,\)则\(t\)=\(( \quad )\)。 A: 、\(t=5\)或\(t=-2\) B: 、\(t=5\)或\(t=2\) C: 、\(t=-5\)或\(t=2\) D: 、\(t=1\)或\(t=-2\)

  • 2022-06-19 问题

    求微分方程[img=269x55]17da6536a9fba07.png[/img]的通解; ( ) A: (C15*sin(2*t))/exp(3*t) + (C16*sin(2*t))/exp(3*t) B: (C15*cos(2*t))/exp(3*t) - (C16*sin(2*t))/exp(3*t) C: (C15*cos(2*t))/exp(3*t) + (C16*cos(2*t))/exp(3*t) D: (C15*cos(2*t))/exp(3*t) + (C16*sin(2*t))/exp(3*t)

    求微分方程[img=269x55]17da6536a9fba07.png[/img]的通解; ( ) A: (C15*sin(2*t))/exp(3*t) + (C16*sin(2*t))/exp(3*t) B: (C15*cos(2*t))/exp(3*t) - (C16*sin(2*t))/exp(3*t) C: (C15*cos(2*t))/exp(3*t) + (C16*cos(2*t))/exp(3*t) D: (C15*cos(2*t))/exp(3*t) + (C16*sin(2*t))/exp(3*t)

  • 2022-06-17 问题

    假设检验的拒绝域是()。 A: (-∞,-z<sub>α/2</sub>]∪[z<sub>α/2</sub>,+∞) B: (-∞,-t<sub>α/2</sub>]∪[t<sub>α/2</sub>,+∞),t<sub>α/2</sub>=t<sub>α/2</sub>(n) C: (-∞,-t<sub>α/2</sub>]∪[t<sub>α/2</sub>,+∞),t<sub>α/2</sub>=t<sub>α/2</sub>(n-1) D: (t<sub>α</sub>,+∞)

    假设检验的拒绝域是()。 A: (-∞,-z<sub>α/2</sub>]∪[z<sub>α/2</sub>,+∞) B: (-∞,-t<sub>α/2</sub>]∪[t<sub>α/2</sub>,+∞),t<sub>α/2</sub>=t<sub>α/2</sub>(n) C: (-∞,-t<sub>α/2</sub>]∪[t<sub>α/2</sub>,+∞),t<sub>α/2</sub>=t<sub>α/2</sub>(n-1) D: (t<sub>α</sub>,+∞)

  • 2022-06-04 问题

    设\(z = {e^{x - 2y}}\),而\(x = \sin t\),\(y = {t^3}\),则全导数\( { { dz} \over {dt}} = \) A: \({e^{\sin t - {t^3}}}(\cos t - 6{t^2})\) B: \({e^{\sin t - 2{t^3}}}(\sin t - 6{t^2})\) C: \({e^{\cos t - 2{t^3}}}(\cos t - 6{t^2})\) D: \({e^{\sin t - 2{t^3}}}(\cos t - 6{t^2})\)

    设\(z = {e^{x - 2y}}\),而\(x = \sin t\),\(y = {t^3}\),则全导数\( { { dz} \over {dt}} = \) A: \({e^{\sin t - {t^3}}}(\cos t - 6{t^2})\) B: \({e^{\sin t - 2{t^3}}}(\sin t - 6{t^2})\) C: \({e^{\cos t - 2{t^3}}}(\cos t - 6{t^2})\) D: \({e^{\sin t - 2{t^3}}}(\cos t - 6{t^2})\)

  • 2021-04-14 问题

    【多选题】若f 1 (t) = ɛ (-t) , f 2 (t) = e t ,则f 1 (t)* f 2 (t) = A. f 1 ꞌ (t)* f 2 (–1) (t) B. f 1 (–1) (t)* f 2 ꞌ (t) C. f 1 (t-3)* f 2 (t+3) D. f 1 (–3) (t)* f 2 ꞌꞌꞌ (t)

    【多选题】若f 1 (t) = ɛ (-t) , f 2 (t) = e t ,则f 1 (t)* f 2 (t) = A. f 1 ꞌ (t)* f 2 (–1) (t) B. f 1 (–1) (t)* f 2 ꞌ (t) C. f 1 (t-3)* f 2 (t+3) D. f 1 (–3) (t)* f 2 ꞌꞌꞌ (t)

  • 2022-05-26 问题

    ()为妊娠期糖尿病。 A: MODY B: GDM C: LADA D: ICA E: GAD

    ()为妊娠期糖尿病。 A: MODY B: GDM C: LADA D: ICA E: GAD

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