利用因式分解计算:20112-2012×2010=______.
原式=20112-(2011+1)×=20112-(20112-1)=20112-20112+1=1.
故答案为:1
Our school has strict rules. Almost no one can ________ using cell-phones in class .
A.get away from
B.get away with
C.get out of
D.get down to
急诊剖腹探查,见胆总管直径为1.6cm,穿刺有脓性胆汁,应采用的术式是
A.胆总管空肠Roux-Y吻合术B.胆总管切开引流减压T管引流术C.胆囊切除、胆总管切开减压T管引流D.胆囊切除E.胆总管探查