A、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">保存图形</span>
B、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">会退出</span><span style="font-size:15px;font-family:'Tahoma','sans-serif'">Autocad</span>
C、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">定期地将信息保存在磁盘上</span>
D、<span style="font-size:15px;font-family:'微软雅黑','sans-serif'">以上都是</span>
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