【单选题】下列各题去括号所得结果正确的是( )
A.
x 2 -(x-y+2z)=x 2 -x+y+2z
B.
x-(-2x+3y-1)=x+2x-3y+1
C.
3x-[5x-(x-1)]=3x-5x-x+1
D.
(x-1)-(x 2 -2)=x-1-x 2 -2
【多选题】在我国,中国共产党与民主党派的关系是( )
【单选题】正常成人腹部可触及部分包块,需除外( )
【简答题】When
I meet someone for the first time, one of the first questions I ask is: “What’s
your favorite hobby?” Most people just look at me and aren ’ t too sure if they even have a
hobby. Some people even...
【多选题】在产品形态设计中, 比如在办公家具的设计中,桌面的尺寸一般都是 多少?
【单选题】资本主义进入垄断后,发达国家的工业保护关税成为: