• 2022-06-06 问题

    Fillineachoftheblanksinthefollowingsentenceswithawordfromthebox.Changetheformwherenecessary. recollect remember remind memorize recall 1.Henderson__________thathefirstmetPollardduringabusinesstriptoWashington.2.Ican’t__________theexactwords.3.Sheresolvedthat,ifMimiforgotthispromise,shewould__________her.4.__________,happinessdoesn’tdependuponwhoyouareorwhatyouhave;itdependssolelyuponwhatyouthink.5.Anactormustbeableto__________hislines.

    Fillineachoftheblanksinthefollowingsentenceswithawordfromthebox.Changetheformwherenecessary. recollect remember remind memorize recall 1.Henderson__________thathefirstmetPollardduringabusinesstriptoWashington.2.Ican’t__________theexactwords.3.Sheresolvedthat,ifMimiforgotthispromise,shewould__________her.4.__________,happinessdoesn’tdependuponwhoyouareorwhatyouhave;itdependssolelyuponwhatyouthink.5.Anactormustbeableto__________hislines.

  • 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)

  • 2022-06-15 问题

    ‏var t = 10; ‌‏function test(test){ ‌‏ t = t + test; ‌‏ console.log(t);‌‏ var t = 3; ‌‏} ‌‏test(t); ‌‏console.log(t); ‌‏运行结果是( )?‌‏‌ A: 3 3 B: 3 10 C: NaN 10 D: NaN 3

    ‏var t = 10; ‌‏function test(test){ ‌‏ t = t + test; ‌‏ console.log(t);‌‏ var t = 3; ‌‏} ‌‏test(t); ‌‏console.log(t); ‌‏运行结果是( )?‌‏‌ A: 3 3 B: 3 10 C: NaN 10 D: NaN 3

  • 2022-06-09 问题

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

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

  • 2022-06-14 问题

    逻辑判断式中错误的是_____。 A: t>20 B: t>=1 & t<=3 C: t>=1 and t<=3 D: t<=1 || t>=3

    逻辑判断式中错误的是_____。 A: t>20 B: t>=1 & t<=3 C: t>=1 and t<=3 D: t<=1 || t>=3

  • 2021-04-14 问题

    一空间曲线由参数方程x=ty=sin(2t) , -3&lt;t&lt;3z=cos(3t*t)表示,绘制这段曲线可以由下列哪组语句完成。? t=-3:0.1:3;x=t;y=sin (2*t);z=cos (3*t.*t);plot3(x, y, z)|t=-3:0.1:3;x=t;y=sin (2*t);z=cos (3*t*t);plot3(x, y, z)|t=-3:0.1:3;y=sin (2*t);z=cos (3*t.*t);plot3 (x, y, z)|t=-3:0.1:3;x=t;y=sin (2*t);z=cos (3*t.*t);plot3(x, y, z, t)

    一空间曲线由参数方程x=ty=sin(2t) , -3&lt;t&lt;3z=cos(3t*t)表示,绘制这段曲线可以由下列哪组语句完成。? t=-3:0.1:3;x=t;y=sin (2*t);z=cos (3*t.*t);plot3(x, y, z)|t=-3:0.1:3;x=t;y=sin (2*t);z=cos (3*t*t);plot3(x, y, z)|t=-3:0.1:3;y=sin (2*t);z=cos (3*t.*t);plot3 (x, y, z)|t=-3:0.1:3;x=t;y=sin (2*t);z=cos (3*t.*t);plot3(x, y, z, t)

  • 2022-06-05 问题

    一空间曲线由参数方程x=t y=sin(2t) , -3<t<3z=cos(3t*t)表示,绘制这段曲线可以由下列哪组语句完成。 A: t=-3:0.1:3;x=t;y=sin(2*t);z=cos(3*t.*t);plot3(x, y, z, t) B: t=-3:0.1:3;x=t;y=sin(2*t);z=cos(3*t*t);plot3(x, y, z) C: t=-3:0.1:3;y=sin(2*t);z=cos(3*t.*t);plot3(x, y, z) D: t=-3:0.1:3;x=t;y=sin(2*t);z=cos(3*t.*t);plot3(x, y, z) E: x=-3:0.1:3;y=sin(2*x);z=cos(3*x.*x);plot3(x, y, z)

    一空间曲线由参数方程x=t y=sin(2t) , -3<t<3z=cos(3t*t)表示,绘制这段曲线可以由下列哪组语句完成。 A: t=-3:0.1:3;x=t;y=sin(2*t);z=cos(3*t.*t);plot3(x, y, z, t) B: t=-3:0.1:3;x=t;y=sin(2*t);z=cos(3*t*t);plot3(x, y, z) C: t=-3:0.1:3;y=sin(2*t);z=cos(3*t.*t);plot3(x, y, z) D: t=-3:0.1:3;x=t;y=sin(2*t);z=cos(3*t.*t);plot3(x, y, z) E: x=-3:0.1:3;y=sin(2*x);z=cos(3*x.*x);plot3(x, y, z)

  • 2022-06-15 问题

    t=(1,2,3,4,5),下列方法不能获取到元素3的是()。 A: t[-3] B: t[2:3] C: t[2] D: t[2:3][0]

    t=(1,2,3,4,5),下列方法不能获取到元素3的是()。 A: t[-3] B: t[2:3] C: t[2] D: t[2:3][0]

  • 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: \({e^{\sin t - 2{t^3}}}(\cos t - 6{t^2})\)

  • 2022-06-15 问题

    vart=10;functiontest(test){t=t+test;console.log(t);vart=3;}test(t);console.log(t);运行结果是()? A: 3  3 B: NaN 10 C: NaN  3 D: 3  10

    vart=10;functiontest(test){t=t+test;console.log(t);vart=3;}test(t);console.log(t);运行结果是()? A: 3  3 B: NaN 10 C: NaN  3 D: 3  10

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