We can see people in the classroom.
A:one hundred-five
B:one hundred and five
C:one-hundred-five
D:one hundred five
为得到函数y=cos(x+π3)的图象,只需将函数y=sinx的图象( )
一根阻值为100Ω的电阻丝,通过电流为2A,要想产生3.2×104J的热量,需要通电的时间为____ s。