cad考试试题
<p>在cad认证考试试题中有这么一道题：</p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;"><span lang="EN-US" style="COLOR: blue; FONT-FAMILY: 宋体; mso-font-width: 104%; mso-font-kerning: 0pt;">3、<span lang="EN-US">AutoCAD具有自动保存功能，一文件自动保存的文件名为test_2_1_0005.<span style="mso-spacerun: yes;"> sv$</span>。其中2为？ （ ）<p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15.6pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none; mso-list: l0 level1 lfo1;"><span style="mso-list: Ignore;">A．</span>为在同一工作任务中打开同一图形实例的次数<span lang="EN-US"><p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15.6pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;">B．为在不同工作任务中打开同一图形实例的次数<span lang="EN-US">
<p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15.6pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;">C．随机数<span lang="EN-US"><p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;">D.<span style="mso-spacerun: yes;"> </span>以上选项都不正确</p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;"></p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;"><span lang="EN-US"><p></p></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm -5.75pt 0pt 0.2pt; TEXT-INDENT: 21.8pt; LINE-HEIGHT: 15pt; TEXT-ALIGN: left; mso-para-margin-top: 0cm; mso-para-margin-right: -.55gd; mso-para-margin-bottom: .0001pt; mso-para-margin-left: .02gd; mso-char-indent-count: 2.0; mso-line-height-rule: exactly; mso-pagination: widow-orphan; mso-layout-grid-align: none;"></p></span><p>谁知道答案啊，我是新手，没有币悬赏，你们有什么问题，我会尽自己最大努力帮忙的，谢谢！</p> <p class="section_title_h1"><a name="TOC_ENTRY__d0e14577"></a><a name="WS1a9193826455f5ff104f57f10e5a146a83-7ba4"></a>以指定时间间隔自动保存图形</p><p><a name="WSfacf1429558a55de8b299cffc1fb20d331d7"></a>如果启用了“自动保存”选项，将以指定的时间间隔保存图形。默认情况下，系统为自动保存的文件临时指定名称为 <em class="mild">filename_a_b_nnnn.sv$</em>。</p><a name="WS1a9193826455f5ffa23ce210c4a30acaf-7841"></a><ul><li><em class="mild">Filename</em> 为当前图形名。 </li><li><em class="mild">a</em> 为在同一工作任务中打开同一图形实例的次数。 </li><li><em class="mild">b</em> 为在不同工作任务中打开同一图形实例的次数。 </li><li><em class="mild">nnnn</em> 为随机数字。</li></ul><p><a name="WSfacf1429558a55de8b299cffc1fb20d331d8"></a>这些临时文件在图形正常关闭时自动删除。出现程序故障或电压故障时，不会删除这些文件。</p><p><a name="WSfacf1429558a55de8b299cffc1fb20d331d9"></a>要从自动保存的文件恢复图形的早期版本，请通过使用扩展名 <em class="mild">.dwg</em> 代替扩展名 <em class="mild">.sv$</em> 来重命名文件，然后再关闭程序。</p> 模具CAD中华模具论坛非常感谢！
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