如图甲所示,为一种调光台灯电路示意图,它通过双向可控硅电子器件来实现了无级调节亮度.给该台灯接220V的正弦交流电后加在灯管两端的电压如图乙所示,则此时交流电压表的示数为( )
A:220V
B:110V
C:2202
D:1102
树——树木——木排——排球
悦——____——____——____
召——____——____——____
A.Here you are.
B.Yes, I want a bird.
C.That's right.
D.I'm six.
E.How nice!
(____)1.Two and three is five.
(____)2.This doll is for you.
(____)3.I want a pencil.
(____)4.How old are you?
(____)5.Please make a wish, Mike.