搜题请搜索小程序“爱下问搜题”
问题 填空题

把一电量为q=10-10C的检验电荷放入某一电场中A点，具有电势能为10-8J，则该点电势为______V.若在该点放入另一电荷q=-10-10C，则该点电势为______V。

答案

100   100

单项选择题

We should let more young parents and their children can enjoy scientific early education .

A．provide more young parents and their children to enjoy early education

B．provide more young parents and their children to enjoy early education and scientific

C．provide young parents and their children enjoy more scientific early education

D．provide young parents and their children with more early education services
查看答案
单项选择题

以下程序的输出结果是______。
struct HAR
int x,y;struct HAR *p; h[2];
main()
h[0]x=1;h[0]y=2；
h[1]x=3;h[1]y=4；
h[0].P=&h[1];h[1].p=h;
printf("%d%d\n",(h[0].p)-＞x,(h[1].p)-＞y);

A．12

B．23

C．14

D．32
查看答案