在如图1所示的电路中,电源电动势为3.0V,内阻不计,L1、L2、L3为3个相同规格的小灯泡,这种小灯泡的伏安特性曲线如图2所示.当开关闭合后,下列判断正确的是( )
A:灯泡L1的电阻为12Ω
B:通过灯泡L1的电流为灯泡L2电流的2倍
C:灯泡L1消耗的电功率为0.75W
D:灯泡L2消耗的电功率为0.30W
根据下表中二次函数y=ax2+bx+c(a≠0)的对应值:
x
3.23
3.24
3.25
3.26
y
﹣0.06
﹣0.02
0.03
0.09
判断方程ax2+bx+c=0(a≠0)的一个解x的范围是( )
1918年《新青年》刊登了剧作《玩偶之家》,其中的女主人公娜拉为摆脱痛苦的婚娴家庭而出走,成了当时许多男女青年效仿的榜样。娜拉式的出走一时成为风潮。这反映了进入20世纪的中国社会( )
She looked at his fingers with wonder as they turned each page and suddenly reached for his hand. She was amazed by his and the softness and warmth of his skin.
I ____ ____ ____ the weekend at home.