A:原图形中平行于x轴的线段,其对应线段仍平行于x′轴,其长度不变
B:原图形中平行于y轴的线段,其对应线段仍平行于y′轴,其长度不变
C:画与坐标系xOy对应的坐标系x′O′y′时,∠x′O′y′可画成135°
D:作直观图时,由于选轴不同,所画直观图可能不同
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.
已知点M(2m+1,m-1)与点N关于原点对称,若点N在第二象限,则m的取值( )