x:y=5:3x:z=7:32x-y-z=34和x+y/3=2y-z/4=x+z/2=1
x:y=5:3x:z=7:32x-y-z=34和x+y/3=2y-z/4=x+z/2=1
若x=[1 2 3 4 5];y=[2 -1 4 3 -2];则z=x.*y=()
若x=[1 2 3 4 5];y=[2 -1 4 3 -2];则z=x.*y=()
执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}
执行以下语句的结果:dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项,结果有误! D: {"x":4,"y":2,"z":3,"a":5}
int x=3,y,z;<br/>y=-x++;<br/>z=y+8/++x;<br/>Console.WriteLine{{0},{1},{2}",x,y,z);<br/>此程序的输出结果是____。 A: 5,-3,-2 B: 4,-3,-1 C: 4,-4,-2 D: 5,-4,-2
int x=3,y,z;<br/>y=-x++;<br/>z=y+8/++x;<br/>Console.WriteLine{{0},{1},{2}",x,y,z);<br/>此程序的输出结果是____。 A: 5,-3,-2 B: 4,-3,-1 C: 4,-4,-2 D: 5,-4,-2
以下程序的输出结果是()。#includevoidmain(){intx=1,y=2,z=3;structaa{inta;int*p;}s[]={4,&x,5,&y,6,&z};structaa*q=s+1;printf("%d\n",*(q–>p)++);} A: 1 B: 2 C: 3 D: 4
以下程序的输出结果是()。#includevoidmain(){intx=1,y=2,z=3;structaa{inta;int*p;}s[]={4,&x,5,&y,6,&z};structaa*q=s+1;printf("%d\n",*(q–>p)++);} A: 1 B: 2 C: 3 D: 4
(4)、若X与Y独立,Z与Y的相关系数为 A: -4/5 B: -1 C: -1/2 D: -2/5
(4)、若X与Y独立,Z与Y的相关系数为 A: -4/5 B: -1 C: -1/2 D: -2/5
下列哪条语句是正确的( ) A: A=[1 2;3 4];B=[3;7];A.*B; B: A=cell(2,3);A(1,2)=[4;5]; C: A=[2 3 5 7;9 4 6 1;7 3 2 5];B=[1 7;0 5];A(2:end,2:2:end) D: x=-5:5;y=-5:5;z=x.*x-y.*y;surf(x,y,z);
下列哪条语句是正确的( ) A: A=[1 2;3 4];B=[3;7];A.*B; B: A=cell(2,3);A(1,2)=[4;5]; C: A=[2 3 5 7;9 4 6 1;7 3 2 5];B=[1 7;0 5];A(2:end,2:2:end) D: x=-5:5;y=-5:5;z=x.*x-y.*y;surf(x,y,z);
若2x+y=z,4x=7y+5z,则x:y:z=( ). A: 2:1:3 B: 2:1:1 C: 2:(-1):3 D: 4:7:5
若2x+y=z,4x=7y+5z,则x:y:z=( ). A: 2:1:3 B: 2:1:1 C: 2:(-1):3 D: 4:7:5
x=2,y=5,z=3 (x>y)+z*4=?
x=2,y=5,z=3 (x>y)+z*4=?
已知g= lambda x, y=3, z=5: x*y*z, 则语句print(g(1, z=2))的输出结果为 ( ) A: 5 B: 6 C: 3 D: 1
已知g= lambda x, y=3, z=5: x*y*z, 则语句print(g(1, z=2))的输出结果为 ( ) A: 5 B: 6 C: 3 D: 1