∵1＜x＜2，
∴x-1＞0，x-2＜0，
∴原式=x-1-（x-2）=x-1-x+2=1．
故答案是：1．
Picasso''s________ability was apparent in his early youth when he started drawing sketches.
A．writing
B．artistic
C．reasoning
D．literary
电压互感器的开口三角侧为什么只反应零序电压？
