A:(7,1)
B:(-7,-1)
C:(10,-5)
D:(-10,5)
In 1989, Audrey made her final ____ (出现) in films.
小雷想知道小灯的亮暗程度与什么因素有关,于是找来额定电流均小于0.6A、额定电压是2.5V的灯L1和额定电压是3.8V的灯L2,先后接在电源电压恒为6V的电路中,按照如图所示的电路开始探究.
–I am going to Hai'nan with my family for the winter vacation.–__________!