若有int x,y,z;,则执行以下程序段后的输出结果为:x=1;y=3;z=5;if(x>;y)x=y;y=z;printf("x=%d,y=%d,z=%d",x,y,z); A: x=1,y=5,z=5 B: x=1,y=3,z=3 C: x=5,y=3,z=5 D: x=5,y=3,z=3
若有int x,y,z;,则执行以下程序段后的输出结果为:x=1;y=3;z=5;if(x>;y)x=y;y=z;printf("x=%d,y=%d,z=%d",x,y,z); A: x=1,y=5,z=5 B: x=1,y=3,z=3 C: x=5,y=3,z=5 D: x=5,y=3,z=3
intx=5,y=8,z=7;表达式z=!(x>y)||(x=1,y=3)计算后的结果 A: x=1,y=3,z=1 B: x=1,y=3,z=0 C: x=5,y=8,z=0 D: x=5,y=8,z=1
intx=5,y=8,z=7;表达式z=!(x>y)||(x=1,y=3)计算后的结果 A: x=1,y=3,z=1 B: x=1,y=3,z=0 C: x=5,y=8,z=0 D: x=5,y=8,z=1
若向量a=(x-2,3)与向量b=(1,y+2)相等,则 ( ) A: .x=1,y=3 B: .x=3,y=1 C: .x=1,y=-5 D: x=5,y=-1
若向量a=(x-2,3)与向量b=(1,y+2)相等,则 ( ) A: .x=1,y=3 B: .x=3,y=1 C: .x=1,y=-5 D: x=5,y=-1
x=-1,y=1x=1,y=0x=3,y=2x=1,y=1x=5,y=3A=2x-y-32417B=4x2-4xy+y294__________________
x=-1,y=1x=1,y=0x=3,y=2x=1,y=1x=5,y=3A=2x-y-32417B=4x2-4xy+y294__________________
设y=5x-3,则y"=______. A: 5 B: 3 C: 1 D: -3
设y=5x-3,则y"=______. A: 5 B: 3 C: 1 D: -3
解差分方程y(n)-7y(n-1)+16y(n-2)-12y(n-3)=0y(1)=-1,y(2)=-3,y(3)=-5
解差分方程y(n)-7y(n-1)+16y(n-2)-12y(n-3)=0y(1)=-1,y(2)=-3,y(3)=-5
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}
若│x│= 3,│y│= 2,且x>y,则x+y的值为( ) A: 1 B: -5 C: -5或-1 D: 5或1
若│x│= 3,│y│= 2,且x>y,则x+y的值为( ) A: 1 B: -5 C: -5或-1 D: 5或1
5(2x-7y)-3(4x-10y),其中x=1,y=-。
5(2x-7y)-3(4x-10y),其中x=1,y=-。