证明:如果(x^2+x+1)lf1(x^3)+xf2(x^3),那么(x-1)lf1(x),(x-1)lf2(x)
证明:如果(x^2+x+1)lf1(x^3)+xf2(x^3),那么(x-1)lf1(x),(x-1)lf2(x)
离子选择电极法测定范围为() A: A10<sup>-1</sup>~10<sup>-6</sup>mol/LF<sup>-</sup> B: B10<sup>-2</sup>~10<sup>-5</sup>mol/LF<sup>-</sup> C: C10<sup>-3</sup>~10<sup>-4</sup>mol/LF<sup>-</sup> D: D10<sup>-1</sup>~10<sup>-5</sup>mol/LF<sup>-</sup> E: E10<sup>-1</sup>~10<sup>-4</sup>mol/LF<sup>-</sup>
离子选择电极法测定范围为() A: A10<sup>-1</sup>~10<sup>-6</sup>mol/LF<sup>-</sup> B: B10<sup>-2</sup>~10<sup>-5</sup>mol/LF<sup>-</sup> C: C10<sup>-3</sup>~10<sup>-4</sup>mol/LF<sup>-</sup> D: D10<sup>-1</sup>~10<sup>-5</sup>mol/LF<sup>-</sup> E: E10<sup>-1</sup>~10<sup>-4</sup>mol/LF<sup>-</sup>
若有定义:double a, b, c;能正确给a,b,c输入数据的语句是( ) A: scanf(" %lf %lf %lf",&a, &b, &c ); B: scanf(" %f %f %f",&a, &b, &c ); C: scanf(" %lf %lf %lf",a, b, c ); D: scanf(" %lf %lf %lf" &a, &b, &c );
若有定义:double a, b, c;能正确给a,b,c输入数据的语句是( ) A: scanf(" %lf %lf %lf",&a, &b, &c ); B: scanf(" %f %f %f",&a, &b, &c ); C: scanf(" %lf %lf %lf",a, b, c ); D: scanf(" %lf %lf %lf" &a, &b, &c );
离子选择电极法测定范围为() A: 10~10mol/LF B: 10~10mol/LF C: 10~10mol/LF D: 10~10mol/LF E: 10~10mol/LF
离子选择电极法测定范围为() A: 10~10mol/LF B: 10~10mol/LF C: 10~10mol/LF D: 10~10mol/LF E: 10~10mol/LF
) void main() { double x,y; scanf('%lf%lf',
) void main() { double x,y; scanf('%lf%lf',
设有定义: double a,b,c;若要求通过输入分别给a、b、c输入1、2、3,输入形式如下(注:此处□代表一个空格) □□1.0□□2.0□□3.0<;回车>;则能进行正确输入的语句是 A: scanf("%lf%lf%lf",a,b,c); B: scanf("%lf%lf%lf",&a,&b,&c); C: scanf("%f%f%f",&a,&b,&c); D: scanf("%5.1lf%5.1lf%5.1lf",&a,&b,&c);
设有定义: double a,b,c;若要求通过输入分别给a、b、c输入1、2、3,输入形式如下(注:此处□代表一个空格) □□1.0□□2.0□□3.0<;回车>;则能进行正确输入的语句是 A: scanf("%lf%lf%lf",a,b,c); B: scanf("%lf%lf%lf",&a,&b,&c); C: scanf("%f%f%f",&a,&b,&c); D: scanf("%5.1lf%5.1lf%5.1lf",&a,&b,&c);
能把值3输入给变量a,4输入给变量b,5输入给变量c的语句是( )。[br][/br](2.0) A: scanf("%d%f%lf", &a,&b,&c); B: scanf("%d%lf%lf", &a,&b,&c); C: scanf("%d%f%f", &a,&b,&c); D: scanf("%lf%lf%lf", &a,&b,&c);
能把值3输入给变量a,4输入给变量b,5输入给变量c的语句是( )。[br][/br](2.0) A: scanf("%d%f%lf", &a,&b,&c); B: scanf("%d%lf%lf", &a,&b,&c); C: scanf("%d%f%f", &a,&b,&c); D: scanf("%lf%lf%lf", &a,&b,&c);
一个逻辑文件LF最多可连()个I/O或LF。
一个逻辑文件LF最多可连()个I/O或LF。
__________________(double,double);main(){doublex,y;scanf("%lf%lf",&x,&y);printf("%lf",max(x,y));}doublemax(doublea,doubleb){return(a>b?a:b);}
__________________(double,double);main(){doublex,y;scanf("%lf%lf",&x,&y);printf("%lf",max(x,y));}doublemax(doublea,doubleb){return(a>b?a:b);}
若有定义: double a,b,c;能正确给a,b,c输入数据的语句是( )。 A: scanf("%lf %lf %lf" &a,&b,&c); B: scanf("%f%f%f",&a,&b,&c); C: scanf("%lf %lf %lf",a,b,c); D: scanf("%lf %lf %lf",&a,&b,&c);
若有定义: double a,b,c;能正确给a,b,c输入数据的语句是( )。 A: scanf("%lf %lf %lf" &a,&b,&c); B: scanf("%f%f%f",&a,&b,&c); C: scanf("%lf %lf %lf",a,b,c); D: scanf("%lf %lf %lf",&a,&b,&c);