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The true length projection of a line appears in a projection plane that is parallel to the line。
The true length projection of a line appears in a projection plane that is parallel to the line。
A.正确
B.错误
正确答案：正确
上一条：
If two projections of two lines are parallel， then the two lines are parallel in space。
下一条：
Two lines are parallel in space provided that their respective projections on two projection planes are parallel.