arcdxf的问题

<P>请问各位，把coverage导成*.dxf的格式，结果在导出时，出现了下面的问题：</P>
<P>Arc: arcdxf d:\temp\he4.dxf d:\temp\hebei40 d:\temp\hebei40 # 3<BR>Creating DXF file d:\temp\he4.dxf from:<BR>   d:\temp\hebei40<BR>   d:\temp\hebei40<BR>No DXF attributes found, using defaults ...<BR>No DXF attributes found, using defaults ...<BR>No DXF attributes found, using defaults ...</P>
<P>最后生成的dxf文件没有属性</P>
<P>请问怎样才能生成有属性的dxf文件阿</P>