At the Spring Festival, you can see many lights _______ in the trees on _______ side of the square.
A:hanging; both
B:hung; other
C:hanging; every
D:hung; every
一次函数y=﹣x+1的图象不经过的象限是( )
我们常说的“圣诞节”、“公元纪年”与下列哪个宗教有关 ( )
如图是我国家用电冰箱的简化电路图,图中L是电冰箱内的照明灯,M是压缩机用的电动机,开关S1,S2都闭合时,L与M ____(串联/并联),S1,S2中属于温控开关的是 ____,你觉得图中电源电压应为 ____V.