[转帖]双代号网络图的绘制
<p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;">一<span lang="EN-US">)</span>绘图规则<span lang="EN-US"> <br/> </span> <span lang="EN-US"> </span>在绘制双代号网络图时，一般应遵循以下基本规则：<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (1)</span>网络图必须按照<span style="COLOR: red;">已定的逻辑关系</span>绘制。由于网络图是<span style="COLOR: red;">有向、有序</span>网状图形，所以其必须严格按照<span lang="EN-US"><span lang="EN-US"><span lang="EN-US">工作</span></span></span>之间的逻辑关系绘制，这同时也是为保证工程<span lang="EN-US"><span lang="EN-US"><span lang="EN-US">质量</span></span></span>和资源优化配置及合理使用所必需的。例如，已知工作之间的逻辑关系如表<span lang="EN-US">3—1</span>所示，若绘出网络图<span lang="EN-US">3—4(a)</span>则是错误的，因为工作<span lang="EN-US">A</span>不是工作<span lang="EN-US">D</span>的紧前工作。此时，可用虚箭线将工作<span lang="EN-US">A</span>和工作<span lang="EN-US">D</span>的联系<span lang="EN-US"> </span>断开，如图<span lang="EN-US">3—4(b)</span>所示。<span lang="EN-US"> <br/><shapetype id="_x0000_t75" coordsize="21600,21600" ospt="75" opreferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"></shapetype><stroke joinstyle="miter"></stroke><stroke></stroke><formulas></formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f></f><f eqn="sum @0 1 0"></f><f></f><f eqn="sum 0 0 @1"></f><f></f><f eqn="prod @2 1 2"></f><f></f><f eqn="prod @3 21600 pixelWidth"></f><f></f><f eqn="prod @3 21600 pixelHeight"></f><f></f><f eqn="sum @0 0 1"></f><f></f><f eqn="prod @6 1 2"></f><f></f><f eqn="prod @7 21600 pixelWidth"></f><f></f><f eqn="sum @8 21600 0"></f><f></f><f eqn="prod @7 21600 pixelHeight"></f><f></f><f eqn="sum @10 21600 0"></f><f></f><formulas></formulas><path oextrusionok="f" gradientshapeok="t" oconnecttype="rect"></path><path></path><lock vext="edit" aspectratio="t"></lock><lock></lock><shapetype></shapetype><shape id="_x0000_i1025" type="#_x0000_t75" alt="" style="WIDTH: 490.5pt; HEIGHT: 280.5pt;"></shape><imagedata src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image001.jpg" ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_1.gif"></imagedata><imagedata></imagedata><shape></shape><br/> </span> <span lang="EN-US">(2)</span>网络图中严禁出现从一个节点出发，顺箭头方向又回到原出发点的循环回路。如果出现<span style="COLOR: red;">循环回路</span>，会造成逻辑关系混乱，使工作无法按顺序进行。当然，此时节点编号也发生错误。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (3)</span>网络图中的箭线<span lang="EN-US">(</span>包括虚箭线，以下同<span lang="EN-US">)</span>应保持<span style="COLOR: red;">自左向右的方向，不应出现箭头指向左方的水平箭线和箭头偏向左方的斜向箭线</span>。若遵循该规则绘制网络图，就不会出现循环回路。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (4)</span>网络图中严禁出现<span style="COLOR: red;">双向箭头和无箭头的连线</span>。因为工作进行的方向不明确，因而不能达到网络图有向的要求。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (5)</span>网络图中严禁出现<span style="COLOR: red;">没有箭尾节点的箭线和没有箭头节点的箭线</span>。图<span lang="EN-US">3—7</span>即为错误的画法。<span lang="EN-US"> <br/><shape id="_x0000_i1026" type="#_x0000_t75" alt="" style="WIDTH: 345pt; HEIGHT: 128.25pt;"></shape><imagedata src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image002.jpg" ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_2.gif"></imagedata><imagedata></imagedata><shape></shape><br/> </span> <span lang="EN-US">(6)</span>严禁<span style="COLOR: red;">在箭线上引入或引出箭线</span>，图<span lang="EN-US">3—8</span>即为错误的画法。<span lang="EN-US"><br/> <br/><shape id="_x0000_i1027" type="#_x0000_t75" alt="" style="WIDTH: 319.5pt; HEIGHT: 129pt;"></shape><imagedata src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image003.jpg" ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_3.gif"></imagedata><imagedata></imagedata><shape></shape><p></p></span></span></p><p></p><p></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan;"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> 但当<span lang="EN-US"><span lang="EN-US"><span lang="EN-US">网络</span></span></span>图的起点节点有多条箭线引出<span lang="EN-US">(</span>外向箭线<span lang="EN-US">)</span>或终点节点有多条箭线引入<span lang="EN-US">(</span>内向箭线<span lang="EN-US">)</span>时，为使图形简洁，可用<span style="COLOR: red;">母线法<span lang="EN-US"><span lang="EN-US" style="COLOR: red;"><span lang="EN-US">绘图</span></span></span></span>。即：将多条箭线经一条共用的垂直线段从起点节点引出，或将多条箭线经一条共用的垂直线段引入终点节点，如图<span lang="EN-US">3—9</span>所示。对于特殊线型的箭线，如粗箭线、双箭线、虚箭线、<span lang="EN-US"><span lang="EN-US"><span lang="EN-US">彩色</span></span></span>箭线等，可在从母线上引出的支线上标出。<span lang="EN-US"><br/> <br/><shape id="_x0000_i1028" type="#_x0000_t75" alt="" style="WIDTH: 276pt; HEIGHT: 186.75pt;"></shape><imagedata src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image004.jpg" ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_4.gif"></imagedata><imagedata></imagedata><shape></shape><br/> </span> <span lang="EN-US"> (7)</span>应尽量<span style="COLOR: red;">避免网络图中<span lang="EN-US"><span lang="EN-US" style="COLOR: red;"><span lang="EN-US">工作</span></span></span>箭线的交叉</span>。当交叉不可避免时，可以采用<span style="COLOR: red;">过桥法或指向法</span>处理，如图<span lang="EN-US">3—10</span>所示。<span lang="EN-US"><br/> <br/><shape id="_x0000_i1029" type="#_x0000_t75" alt="" style="WIDTH: 318.75pt; HEIGHT: 215.25pt;"></shape><imagedata src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image005.jpg" ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_5.gif"></imagedata><imagedata></imagedata><shape></shape><br/> </span> <span lang="EN-US"> (8)</span>网络图中应<span style="COLOR: red;">只有一个起点节点和一个终点节点</span><span lang="EN-US">(</span>任务中部分工作需要分期完成的网络计划除外<span lang="EN-US">)</span>。<span style="COLOR: red;">除网络图的起点节点和终点节点外，不允许出现没有外向箭线的节点和没有内向箭线的节点。</span><span lang="EN-US"> <br/> </span> <span lang="EN-US">(</span>二<span lang="EN-US">)</span>绘图方法<span lang="EN-US"> <br/> </span> 当已知每一项工作的紧前工作时，可按下述步骤绘制双代号网络图：<span lang="EN-US"> <br/> </span> <span lang="EN-US"> 1</span>．绘制没有紧前工作的工作箭线，使它们具有相同的开始节点，以保证网络图只有一个起点节点。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> 2</span>．依次绘制其他工作箭线。这些工作箭线的绘制条件是其所有紧前工作箭线都已经绘制出来。在绘制这些工作箭线时，应按下列原则进行：<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (1)</span>当所要绘制的工作只有一项紧前工作时，则将该工作箭线直接画在其紧前工作箭线之后即可。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (2)</span>当所要绘制的工作有多项紧前工作时，应按以下四种情况分别予以考虑：<span lang="EN-US"> <br/> </span> <span lang="EN-US"> ①</span>对于所要绘制的工作<span lang="EN-US">(</span>本工作<span lang="EN-US">)</span>而言，如果在其紧前工作之中存在一项只作为本工作紧前工作的工作<span lang="EN-US">(</span>即在紧前工作栏目中，该紧前工作只出现一次<span lang="EN-US">)</span>，则应将本工作箭线直接画在该紧前工作箭线之后，然后用虚箭线将其他紧前工作箭线的箭头节点与本工作箭线的箭尾节点分别相连，以表达它们之间的逻辑关系。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> ②</span><span style="COLOR: red;">对于所要绘制的工作<span lang="EN-US">(</span>本工作<span lang="EN-US">)</span>而言，如果在其紧前工作之中存在多项只作为本工作紧前工作的工作，应先将这些紧前工作箭线的箭头节点合并，再从合并后的节点开始，画出本工作箭线，最后用虚箭线将其他紧前工作箭线的箭头节点与本工作箭线的箭尾节点分别相连，以表达它们之间的逻辑关系。<span lang="EN-US"> </span></span><span lang="EN-US"><br/> <br/> </span> <span lang="EN-US"> ③</span>对于所要绘制的工作<span lang="EN-US">(</span>本工作<span lang="EN-US">)</span>而言，如果不存在情况<span lang="EN-US">①</span>和情况<span lang="EN-US">②</span>时，应判断本工作的所有紧前工作是否都同时作为其他工作的紧前工作<span lang="EN-US">(</span>即在紧前工作栏目中，这几项紧前工作是否均同时出现若干次<span lang="EN-US">)</span>。如果上述条件成立，应先将这些紧前工作箭线的箭头节点合并后，再从合并后的节点开始画出本工作箭线。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> ④</span>对于所要绘制的工作<span lang="EN-US">(</span>本工作<span lang="EN-US">)</span>而言，如果既不存在情况<span lang="EN-US">①</span>和情况<span lang="EN-US">②</span>，也不存在情况<span lang="EN-US">③</span>时，则应将本工作箭线单独画在其紧前工作箭线之后的中部，然后用虚箭线将其各紧前工作箭线的箭头节点与本工作箭线的箭尾节点分别相连，以表达它们之间的逻辑关系。<span lang="EN-US"> <p></p></span></span></p><p></p><p></p><p></p> <p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-pagination: widow-orphan; mso-char-indent-count: 2.0;"><group id="_x0000_s1026" coordsize="3890,249" coordorigin="5795,9240" style="MARGIN-TOP: 390pt; Z-INDEX: 1; LEFT: 0px; MARGIN-LEFT: 199.75pt; WIDTH: 194.5pt; POSITION: absolute; HEIGHT: 12.45pt; TEXT-ALIGN: left;"><group id="_x0000_s1027" coordsize="505,204" coordorigin="5795,9285" style="LEFT: 5795px; WIDTH: 505px; POSITION: absolute; TOP: 9285px; HEIGHT: 204px;"><line id="_x0000_s1028" strokeweight="2.25pt" strokecolor="white" to="6155,9285" from="5795,9285" style="POSITION: absolute;"></line><line id="_x0000_s1029" strokeweight="2.25pt" strokecolor="white" to="6300,9396" from="5940,9396" style="POSITION: absolute;"></line><line id="_x0000_s1030" strokeweight="2.25pt" strokecolor="white" to="6209,9489" from="5849,9489" style="POSITION: absolute;"></line></group><group id="_x0000_s1031" coordsize="505,204" coordorigin="5795,9285" style="LEFT: 9180px; WIDTH: 505px; POSITION: absolute; TOP: 9240px; HEIGHT: 204px;"><line id="_x0000_s1032" strokeweight="2.25pt" strokecolor="white" to="6155,9285" from="5795,9285" style="POSITION: absolute;"></line><line id="_x0000_s1033" strokeweight="2.25pt" strokecolor="white" to="6300,9396" from="5940,9396" style="POSITION: absolute;"></line><line id="_x0000_s1034" strokeweight="2.25pt" strokecolor="white" to="6209,9489" from="5849,9489" style="POSITION: absolute;"></line></group></group><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;"> 3</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体; mso-font-kerning: 0pt;">．当各项工作箭线都绘制出来之后，应合并那些没有紧后工作之工作箭线的箭头节点，以保证<span lang="EN-US"><a href="http://clk.qunsee.com/click/click.php?cpid=3253&ads_id=447&pid=99000759&cid=765&url=http%3A//www.dahongbao.com/search.php%3FsearchText%3D7%25CE%25BBqq%25F6%25A6%25BA%25C5%26source%3Dqunsee_cn_keyword_7%25CE%25BBqq%25F6%25A6%25BA%25C5&k=%u7F51%u7EDC&s=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_3.shtml&rn=615775&v=1&ref=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_2.shtml&province=%u6CB3%u5357&city=%u8BB8%u660C" target="_blank"><span lang="EN-US"><span lang="EN-US">网络</span></span></a></span>图只有一个终点节点<span lang="EN-US">(</span>多目标网络计划除外<span lang="EN-US">)</span>。<span lang="EN-US"> <br/> </span> <span lang="EN-US">4</span>．当确认所绘制的网络图正确后，即可进行节点编号。网络图的节点编号在满足前述要求的前提下，<span style="COLOR: red;">既可采用连续的编号方法，也可采用不连续的编号方法，如<span lang="EN-US">1</span>、<span lang="EN-US">3</span>、<span lang="EN-US">5</span>、<span lang="EN-US">……</span>或<span lang="EN-US">5</span>、<span lang="EN-US">10</span>、<span lang="EN-US">15</span>、<span lang="EN-US">……</span>等，以避免以后增<span lang="EN-US"><a href="http://clk.qunsee.com/click/click.php?cpid=3253&ads_id=462&pid=99000759&cid=765&url=http%3A//www.dahongbao.com/search.php%3FsearchText%3D%25C2%25C1%25BA%25B8%25CB%25BF%26source%3Dqunsee_cn_keyword_%25C2%25C1%25BA%25B8%25CB%25BF&k=%u52A0%u5DE5&s=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_3.shtml&rn=588546&v=1&ref=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_2.shtml&province=%u6CB3%u5357&city=%u8BB8%u660C" target="_blank"><span lang="EN-US" style="COLOR: red;"><span lang="EN-US">加工</span></span></a></span>作时而改动整个网络图的节点编号。<span lang="EN-US"> <br/></span></span><span lang="EN-US"> </span> 以上所述是已知每一项工作的紧前工作时的<span lang="EN-US"><a href="http://clk.qunsee.com/click/click.php?cpid=3253&ads_id=551&pid=99000759&cid=765&url=http%3A//www.smarter.com.cn/search.php%3Fq%3D%25CA%25E9%25B7%25A8%25D7%25F7%25C6%25B7%26source%3Dqunsee_cn_keyword_%25CA%25E9%25B7%25A8%25D7%25F7%25C6%25B7&k=%u7ED8%u56FE&s=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_3.shtml&rn=557750&v=1&ref=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_2.shtml&province=%u6CB3%u5357&city=%u8BB8%u660C" target="_blank"><span lang="EN-US"><span lang="EN-US">绘图</span></span></a></span>方法，当已知每一项工作的紧后工作时，也可按类似的方法进行网络图的绘制，只是其绘图顺序由前述的从左向右改为从右向左。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> (</span>三<span lang="EN-US">)</span>绘图示例<span lang="EN-US"> <br/> </span> 现举例说明前述双代号网络图的绘制方法。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> [</span>例<span lang="EN-US">3-1] </span>已知各工作之间的逻辑关系如表<span lang="EN-US">3-2</span>所示，则可按下述步骤绘制其双代号网络图。<span lang="EN-US"> <br/><shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" opreferrelative="t" ospt="75" coordsize="21600,21600"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path oconnecttype="rect" gradientshapeok="t" oextrusionok="f"></path><lock aspectratio="t" vext="edit"></lock></shapetype><shape id="_x0000_i1026" alt="" type="#_x0000_t75" style="WIDTH: 484.5pt; HEIGHT: 39pt;"><imagedata ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_6.gif" src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image002.gif"></imagedata></shape><br/> </span> <span lang="EN-US">1</span>．绘制工作箭线<span lang="EN-US">A</span>和工作箭线<span lang="EN-US">B</span>，如图<span lang="EN-US">3—13(a)</span>所示。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> 2</span>．按前述原则<span lang="EN-US">(2)</span>中的情况<span lang="EN-US">①</span>绘制工作箭线<span lang="EN-US">C</span>，如图<span lang="EN-US">3—13(b)</span>所示。<span lang="EN-US"> <br/> </span> <span lang="EN-US"> 3</span>．按前述原则<span lang="EN-US">(1)</span>绘制工作箭线<span lang="EN-US">D</span>后，将工作箭线<span lang="EN-US">C</span>和<span lang="EN-US">D</span>的箭头节点合并，以保证网络图只有一个终点节点。<span style="COLOR: red;">当确认给定的逻辑关系表达正确后，再进行节点编号。</span>表<span lang="EN-US">3—2</span>给定逻辑关系所对应的双代号网络图如图<span lang="EN-US">3—13(c)</span>所示。<span lang="EN-US"><br/><shape id="_x0000_i1027" alt="" type="#_x0000_t75" style="WIDTH: 456pt; HEIGHT: 150.75pt;"><imagedata ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_7.gif" src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image003.jpg"></imagedata></shape> <br/>[</span>例<span lang="EN-US">3-2] </span>已知各工作之间的逻辑关系如表<span lang="EN-US">3-3</span>所示，则可按下述步骤绘制其双代号网络图。<span lang="EN-US"> <br/> </span>工作逻辑关系表<span lang="EN-US"> </span>表<span lang="EN-US">3-3 <br/><shape id="_x0000_i1028" alt="" type="#_x0000_t75" style="WIDTH: 498.75pt; HEIGHT: 70.5pt;"><imagedata ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_8.gif" src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image004.jpg"></imagedata></shape><br/> </span> <span lang="EN-US">1</span>．绘制工作箭线<span lang="EN-US">A</span>、工作箭线<span lang="EN-US">B</span>和工作箭线<span lang="EN-US">C</span>，如图<span lang="EN-US">3—14(a)</span>所示。<span lang="EN-US"> <br/> </span> <span lang="EN-US">2</span>．按前述原则<span lang="EN-US">(2)</span>中的情况<span lang="EN-US">③</span>绘制工作箭线<span lang="EN-US">D</span>，如图<span lang="EN-US">3—14(b)</span>所示。<span lang="EN-US"> <br/> </span> <span lang="EN-US">3</span>．按前述原则<span lang="EN-US">(2)</span>中的情况<span lang="EN-US">①</span>绘制工作箭线<span lang="EN-US">E</span>，如图<span lang="EN-US">3—14(c)</span>所示。<span lang="EN-US"> <br/> </span> <span lang="EN-US">4</span>．按前述原则<span lang="EN-US">(2)</span>中的情况<span lang="EN-US">②</span>绘制工作箭线<span lang="EN-US">G</span>。当确认给定的逻辑关系表达正确后，再进行节点编号。表<span lang="EN-US">3-3</span>给定逻辑关系所对应的双代号网络图如图<span lang="EN-US">3—14(d)</span>所示<span lang="EN-US"> <br/><shape id="_x0000_i1029" alt="" type="#_x0000_t75" style="WIDTH: 480.75pt; HEIGHT: 183pt;"><imagedata ohref="http://www.eduhot.com/upimg/allimg/071117/234_20071117114728_9.gif" src="file:///C:\DOCUME~1\lkk0909\LOCALS~1\Temp\msohtml1\01\clip_image005.jpg"></imagedata></shape><span style="mso-spacerun: yes;"> </span></span></span><span lang="EN-US"><font face="">[</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">例</span><span lang="EN-US"><font face="">3-3] </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">已知各</span><span lang="EN-US"><a href="http://clk.qunsee.com/click/click.php?cpid=1021&ads_id=371&pid=99000759&cid=765&url=http%3A//click.lianmark.com/%3FgId%3DG000000462%26linkId%3DL000000790%26linkType%3D002%26mId%3DM000004751%26cId%3D&k=%u5DE5%u4F5C&s=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_4.shtml&rn=249109&v=1&ref=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_3.shtml&province=%u6CB3%u5357&city=%u8BB8%u660C" target="_blank"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';"><span lang="EN-US">工作</span></span></a></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">之间的逻辑关系如表</span><span lang="EN-US"><font face="">3-4</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">所示，则可按下述步骤绘制其双代号</span><span lang="EN-US"><a href="http://clk.qunsee.com/click/click.php?cpid=3253&ads_id=447&pid=99000759&cid=765&url=http%3A//www.dahongbao.com/search.php%3FsearchText%3D7%25CE%25BBqq%25F6%25A6%25BA%25C5%26source%3Dqunsee_cn_keyword_7%25CE%25BBqq%25F6%25A6%25BA%25C5&k=%u7F51%u7EDC&s=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_4.shtml&rn=252126&v=1&ref=http%3A//www.eduhot.com/jianli/qipc/fudao/20071117/21621/index_3.shtml&province=%u6CB3%u5357&city=%u8BB8%u660C" target="_blank"><span lang="EN-US" style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';"><span lang="EN-US">网络</span></span></a></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">图。</span><span lang="EN-US"><font face=""> <br/> </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">工作逻辑关系表</span><span lang="EN-US"><font face=""> </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: ''; mso-hansi-font-family: '';">表</span><span lang="EN-US"><font face="">3-4 <br/></font></span><span lang="EN-US"><font face=""><br/></font></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"></p> 网络图的绘制.rar ：down10_1013.asp?ID=116646<br/>
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