【单选题】正等测的轴间角是( );在斜二测轴侧投影图坐标系中OX、OY、OZ轴的轴向伸缩系数之比为( )。
A. 120°;1:1:1
B. 120°;1:0.5:1
C. 90°;0.9:1:0.6
D. 90°;1:1:0.5
查看答案
【单选题】正等轴测图与斜二等轴测图的轴间角完全相同。
A. 对
B. 错
【单选题】正等轴测投影图的轴间角均为120°,简化轴向伸缩系数均为1。
A. 对
B. 错
【填空题】坐标轴OX、OY、OZ在轴测投影面上的投影O1X1、O1Y1、O1Z1简称轴测轴;每两根轴测轴之间的夹角∠X1O1Y1、∠X1O1Z1、∠Y1O1Z1,称为____角。
From the sentence "And then, after 6 years, she saw him again. ", we can infer that the two characters had not seen each other for 6 years.
A. 对
B. 错