How many types of parallel line are there relative to projection plane？
A.2
B.1
C.3
D.4
正確答案：3
題目：How many types of parallel line are there relative to projection plane？
關鍵字：智慧樹
相關試題
1.How can you represent V projection of a point？
2.How many relationships between two lines？
3.If two projections of two lines are parallel， then the two lines are parallel in space。
4.The true length projection of a line appears in a projection plane that is parallel to the line。
5.Two lines are parallel in space provided that their respective projections on two projection planes are parallel.
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