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【多选题】
在绘制用几个平行的剖切平面剖切的全剖视图时应注意（ ）A.
不应出现不完整的结构要素
B.
转折处如因位置有限，且不致引起误解时，可以不注写字母
C.
剖视图上不允许画出剖切平面转折处的分界线
D.
剖切符号的转折处不允许与图上的轮廓线重合
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A.
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