The great _______ of my plan is that it’s so cheap compared to the others.

A．power

B．strength

C．energy

D．force

下列程序的执行结果为 。
#include＜iostream.h＞
void main( )

cout.fill(’*’) ;
cout.width(10) ;
cout ＜ ＜ "hello" ＜ ＜ endl;