判断题

立体中相互平行的直线在投影图中的投影不平行。（）

答案：错误

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多项选择题

Which is the correct description of sharp and flat?
A、Both sharp and flat are to raise the real note by half note.
B、Sharp and flat are used to raise the real note by a semibreve
C、The sharp is to raise the note by a half note.
D、Flat is to reduce the note by a half note.

单项选择题

春秋时期各国公布成文法，晋文公作“被庐之法”。（）

A.正确
B.错误