第二章测试1.
Which coordinates are related to H projection of a point?
A:x,y B:y,z C:x,y,z D:x,z
答案:A
2.
How can you represent V projection of a point?
A:A B:a'' C:a' D:a 3.
Which projection accumulates as a point for a H perpendicular line?
A:V B:no projection accumulates as a point C:W D:H 4.
Which projection is the true length for a frontal line?
A:W projection B:H projection C:no projection D:V projection 5.
How many types of parallel line are there relative to projection plane?
A:2 B:4 C:1 D:3 6.
How many relationships between two lines?
A:3 B:4 C:2 D:1 7.
If two projections of two lines are parallel, then the two lines are parallel in space
A:错 B:对 8.
The true length projection of a line appears in a projection plane that is parallel to the line
A:错 B:对 9.
Two lines are parallel in space provided that their respective projections on two projection planes are parallel.
A:错 B:对 10.
If a line is parallel to any line in a plane, the line is parallel to the plane.
A:对 B:错
