单选题Layer命令用于（）A创建新图层B指定颜色与线型C列出以前所建图层D以上都是
单选题
Layer命令用于（）
A
创建新图层
B
指定颜色与线型
C
列出以前所建图层
D
以上都是
参考解析
解析：
暂无解析
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