【单选题】Which projection is the true length for a frontal line?
【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】按照来源的不同,可将酒店调研资料分成原始资料(或称第一手资料)和第二手资料。原始资料是工作人员通过现场调研或实验得来的资料,第二手资料是指由他人收集并整理过的资料,下列属于第二手资料的 外部资料的 是( )
【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
【多选题】What are the projection properties of frontal line?
A.
The frontal projection gives the true size.
B.
The horizontal projection is parallel to axis OX.
C.
The profile projection is parallel to axis OZ.
D.
The angle between the frontal projection and axis OX equals the angle of the spacial line and the horizontal plane of projection.
【单选题】标准橡胶有4个级别的代号,分别是SCR5、SCR10 、( )和SCR50。
【多选题】Which of the following are the projection rules of the projections of points?
A.
The frontal projection and the horizontal projection of the same point should be aligned vertically.
B.
The frontal projection and the profile projection of the same point should be aligned horizontally.
C.
The horizontal projection and the profile projection of the same point have the same width coordinate.