给定图示正方形,则图形对形心轴y和y的惯性矩Iy1与Iy之间的关系为( )。[img=117x120]178698bf4479c0c.png[/img] A: Iy1 > Iy B: Iy1 = Iy C: Iy1 = 0.5Iy D: Iy1 < 0.5Iy
给定图示正方形,则图形对形心轴y和y的惯性矩Iy1与Iy之间的关系为( )。[img=117x120]178698bf4479c0c.png[/img] A: Iy1 > Iy B: Iy1 = Iy C: Iy1 = 0.5Iy D: Iy1 < 0.5Iy
给定图示正方形,则图形对形心轴y和y的惯性矩Iy1与Iy之间的关系为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/77cbf7a97695404aaa4569d26f5659d6.png
给定图示正方形,则图形对形心轴y和y的惯性矩Iy1与Iy之间的关系为( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201811/77cbf7a97695404aaa4569d26f5659d6.png
图示矩形截面对x、y,两形心轴的惯性矩分别为()。 A: I=(1/12)bh,Iy=(1/12)hb B: I=(1/12)bh,Iy=(1/12)hb C: I=(1/12)hb,Iy=(1/12)bh D: I=(1/12)hb,Iy=(1/12)bh
图示矩形截面对x、y,两形心轴的惯性矩分别为()。 A: I=(1/12)bh,Iy=(1/12)hb B: I=(1/12)bh,Iy=(1/12)hb C: I=(1/12)hb,Iy=(1/12)bh D: I=(1/12)hb,Iy=(1/12)bh
设iX=2,iY=3, ch='a',则表达式iZ = (iX || iY)&&(ch>'A')的值是1
设iX=2,iY=3, ch='a',则表达式iZ = (iX || iY)&&(ch>'A')的值是1
下面程序的运行结果是 iX=80,iY=25____。void main(){ int iX,iY;iX=80;iY=25;printf("iX=%d,iY=%d\n",iX,iY);printf("iX/iY=%d,iX%iY=%d\n",iX/iY,iX%iY);}
下面程序的运行结果是 iX=80,iY=25____。void main(){ int iX,iY;iX=80;iY=25;printf("iX=%d,iY=%d\n",iX,iY);printf("iX/iY=%d,iX%iY=%d\n",iX/iY,iX%iY);}
在电源电压相同时,三相对称负载做三角形连接时的线电流IΔ与做星形连接时的线电流[br][/br]IY之比为______,功率之比PΔ/PY=______。 A: IΔ/IY=1/3 ,PΔ/PY=1/3 B: IΔ/IY=3,PΔ/ PY =3 C: IΔ/IY=3,PΔ/ PY =1/3 D: IΔ=IY,PΔ= PY<br>B
在电源电压相同时,三相对称负载做三角形连接时的线电流IΔ与做星形连接时的线电流[br][/br]IY之比为______,功率之比PΔ/PY=______。 A: IΔ/IY=1/3 ,PΔ/PY=1/3 B: IΔ/IY=3,PΔ/ PY =3 C: IΔ/IY=3,PΔ/ PY =1/3 D: IΔ=IY,PΔ= PY<br>B
void main() { int iX,iY,iM,iN; iX=10;iY=20; iM=iX++;iN=++iY; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); iM=iX– –;iN=– –iY; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); }
void main() { int iX,iY,iM,iN; iX=10;iY=20; iM=iX++;iN=++iY; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); iM=iX– –;iN=– –iY; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); }
iX=2,iY=3,ch='a',表达式iZ=(iX||iY)&&(ch>'A')的值是。 A: true B: false C: 0 D: 1
iX=2,iY=3,ch='a',表达式iZ=(iX||iY)&&(ch>'A')的值是。 A: true B: false C: 0 D: 1
#include "stdio.h" void main() { int iX,iY,iM,iN; iX=10;iY=20; iM=iX++;iN=iY++; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); iM=iX--;iN=--iY; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); }
#include "stdio.h" void main() { int iX,iY,iM,iN; iX=10;iY=20; iM=iX++;iN=iY++; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); iM=iX--;iN=--iY; printf("iX=%d,iY=%d,iM=%d,iN=%d",iX,iY,iM,iN); }
iX=2,iY=3,ch='a',表达式iZ=(iX||iY)&&(ch>;'A')的值是 A: true B: false C: 0 D: 1
iX=2,iY=3,ch='a',表达式iZ=(iX||iY)&&(ch>;'A')的值是 A: true B: false C: 0 D: 1