• 2022-06-09 问题

    下面程序输出结果是​x, y, z = 10, 0, 0​​def f(x):​ y = 0​ global z​ for i in range(x):​ y += i​ z += i​ return y, z​​x = f(x)​print(x, y, z)​ A: (45, 45) 45 45 B: (0, 45) 0 45 C: (45, 45) 0 45 D: 10 0 45

    下面程序输出结果是​x, y, z = 10, 0, 0​​def f(x):​ y = 0​ global z​ for i in range(x):​ y += i​ z += i​ return y, z​​x = f(x)​print(x, y, z)​ A: (45, 45) 45 45 B: (0, 45) 0 45 C: (45, 45) 0 45 D: 10 0 45

  • 2022-06-01 问题

    (z)45÷z5×z4(7)5z7÷(z÷t4)(t)(z7-t8)×8.

    (z)45÷z5×z4(7)5z7÷(z÷t4)(t)(z7-t8)×8.

  • 2022-06-06 问题

    现有:classTest4{publicstaticvoidmain(String[]args){booleanx=true;booleany=false;shortz=42;if((z++==42)&&(y=true))z++;if((x=false)||(++z==45))z++;System.out.println(¨z=”+z);}}结果为: A: z=42 B: z=44 C: z=45 D: z=46

    现有:classTest4{publicstaticvoidmain(String[]args){booleanx=true;booleany=false;shortz=42;if((z++==42)&&(y=true))z++;if((x=false)||(++z==45))z++;System.out.println(¨z=”+z);}}结果为: A: z=42 B: z=44 C: z=45 D: z=46

  • 2022-06-06 问题

    class Test4 {   public static void main(String [] args) {   boolean x = true;   boolean y = false;   short z = 42;   if((z++ = = 42) && (y = true)) z++;   if((x = false) || (++z = = 45)) z++;   System.out.println("z = " + z);   }   }   结果为:() A: z = 42 B: z = 44 C: z = 45 D: z = 46

    class Test4 {   public static void main(String [] args) {   boolean x = true;   boolean y = false;   short z = 42;   if((z++ = = 42) && (y = true)) z++;   if((x = false) || (++z = = 45)) z++;   System.out.println("z = " + z);   }   }   结果为:() A: z = 42 B: z = 44 C: z = 45 D: z = 46

  • 2022-06-06 问题

    9. 已知函数$z=z(x,y)$由${{z}^{3}}-3xyz={{a}^{3}}$确定,则$\frac{{{\partial }^{2}}z}{\partial x\partial y}=$( ) A: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ B: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-xy)}{{{({{z}^{2}}-xy)}^{2}}}$ C: $\frac{z({{z}^{3}}-2xyz-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ D: $\frac{z({{z}^{3}}-2xy{{z}^{2}}-{{x}^{2}}y)}{{{({{z}^{2}}-xy)}^{3}}}$

    9. 已知函数$z=z(x,y)$由${{z}^{3}}-3xyz={{a}^{3}}$确定,则$\frac{{{\partial }^{2}}z}{\partial x\partial y}=$( ) A: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ B: $\frac{z({{z}^{4}}-2xy{{z}^{2}}-xy)}{{{({{z}^{2}}-xy)}^{2}}}$ C: $\frac{z({{z}^{3}}-2xyz-{{x}^{2}}{{y}^{2}})}{{{({{z}^{2}}-xy)}^{3}}}$ D: $\frac{z({{z}^{3}}-2xy{{z}^{2}}-{{x}^{2}}y)}{{{({{z}^{2}}-xy)}^{3}}}$

  • 2021-04-14 问题

    智慧职教: 已知 x=45, y=’a’, z=0; 则表达式(x>=z && y

    智慧职教: 已知 x=45, y=’a’, z=0; 则表达式(x>=z && y

  • 2022-06-29 问题

    绘制函数 z=(x+y)^2 的曲面图 A: x=-3:0.1:3; y=-3:0.1:3; z=(x+y)^2; surf(x,y,z) B: x=-3:0.1:3; y=-3:0.1:3; z=(x+y).^2; surf(x,y,z) C: x=-3:0.1:3; y=-3:0.1:3; z=(x+y).^2; meshgrid(x,y,z); surf(x,y,z) D: x=-3:0.1:3; y=-3:0.1:3; [X,Y]=meshgrid(x,y); Z=(X+Y).^2; surf(X,Y,Z)

    绘制函数 z=(x+y)^2 的曲面图 A: x=-3:0.1:3; y=-3:0.1:3; z=(x+y)^2; surf(x,y,z) B: x=-3:0.1:3; y=-3:0.1:3; z=(x+y).^2; surf(x,y,z) C: x=-3:0.1:3; y=-3:0.1:3; z=(x+y).^2; meshgrid(x,y,z); surf(x,y,z) D: x=-3:0.1:3; y=-3:0.1:3; [X,Y]=meshgrid(x,y); Z=(X+Y).^2; surf(X,Y,Z)

  • 2021-04-14 问题

    指出下列3组坐标的区别 (1) 10,5,-3 @10,5,-3 (2) 4<45 @4<45 (3) 3<30<45 3<30

    指出下列3组坐标的区别 (1) 10,5,-3 @10,5,-3 (2) 4<45 @4<45 (3) 3<30<45 3<30

  • 2022-06-19 问题

    已知int x=1,y=2,z=3;执行if(x&gt;y) z=x;x=y;y=z;后x,y,z的值为( ) A: x=1,y=2,z=3 B: x=2,y=3,z=3 C: x=2,y=3,z=1 D: x=2,y=3,z=2

    已知int x=1,y=2,z=3;执行if(x&gt;y) z=x;x=y;y=z;后x,y,z的值为( ) A: x=1,y=2,z=3 B: x=2,y=3,z=3 C: x=2,y=3,z=1 D: x=2,y=3,z=2

  • 2022-06-09 问题

    已知 x = '654' 和 y = '321',那么表达式 x + y 的值为 ( ) A: '321' B: '654' C: '654321' D: 654321

    已知 x = '654' 和 y = '321',那么表达式 x + y 的值为 ( ) A: '321' B: '654' C: '654321' D: 654321

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