试题详情
- 多项选择题以下关于符号的说法正确的是（）
A、符号是可重复使用的对象或对象群组
B、符号的定义以及关于实例的信息都存储在库中
C、在绘图中多次出现的对象上使用符号有助于减小文件大小
D、符号实例即为绘图中符号的一次出现
- A,B,C,D
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