【单选题】Which type of projection does not have the projection rays parallel to each other?
A.
axonometric projection
C.
orthographic projection
D.
perspective projection
【多选题】What are the projection properties of horizontal line?
A.
The horizontal projection gives the true length.
B.
The fronal projection is parallel to axis OX.
C.
The profile projection is parallel to axis OZ.
【单选题】标准橡胶有4个级别的代号,分别是SCR5、SCR10、SCR20和 ( )。
【单选题】关于测绘成果汇交,以下说法错误的为( )。
A.
测绘成果汇交的接受主体为国务院测绘行政主管部门
B.
测绘成果汇交的特征有:法定性、无偿性、完整性、时效性
D.
测绘单位应当自测绘项目验收完成之日起三个月内,向测绘行政主管部门汇交成果副本或者目录
【单选题】标准橡胶有4个级别的代号,分别是SCR5、SCR10 、( )和SCR50。
【单选题】The distance between horizontal projection a and projection axis OX is equal to the distance from the point A to the projection plane: (Single option:10 points)