2007年电工大学生数学建模竞赛程序答疑处 - 第6页 - 全国大学生电工数模竞赛(EMCM) - 数学建模社区-数学中国

ssddee 发表于 2007-11-23 18:22

B题是求一月份总供水量，还是一月份每天的供水量？数据中的温度显示0是否意味着温度数据未知?

赵军发表于 2007-11-23 18:22

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用赵军在2007-11-23 18:13:11的发言： 各位参赛同学应该认真读题，审题，对题目中不明白的问题要举一反三，没有说题中给的数据都是正确的，也没有说题中所给数据都是有用的，也没有说只能用题中所给的数据……</div><div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用88635645在2007-11-23 18:17:11的发言： <div align="center"><table class="MsoNormalTable" cellspacing="0" cellpadding="0" border="1" style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insidev: .5pt solid windowtext;"><tbody><tr style="mso-yfti-irow: 0; mso-yfti-firstrow: yes;"><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">机组
</td><td valign="top" style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt;">启动成本(￥) </td><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">空载成本(￥) </td><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">增量发电量(MWh) </td><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">增量成本(￥/MWh) </td></tr><tr style="mso-yfti-irow: 1;"><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">G1 </td><td valign="top" style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt;">350 </td><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">100 </td><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">100,100 </td><td valign="top" style="PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; BORDER-BOTTOM-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; PADDING-TOP: 0cm; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-top-alt: solid windowtext .5pt;">10,14 </td></tr><tr style="mso-yfti-irow: 2; mso-yfti-lastrow: yes;"><td valign="top" style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; BORDER-TOP-COLOR: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-bottom-alt: solid windowtext .5pt;">G2 </td><td valign="top" style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; BORDER-TOP-COLOR: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-bottom-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt;">100 </td><td valign="top" style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; BORDER-TOP-COLOR: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-bottom-alt: solid windowtext .5pt;">200 </td><td valign="top" style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; BORDER-TOP-COLOR: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-bottom-alt: solid windowtext .5pt;">60,40 </td><td valign="top" style="PADDING-RIGHT: 5.4pt; PADDING-LEFT: 5.4pt; BORDER-LEFT-COLOR: #ece9d8; PADDING-BOTTOM: 0cm; BORDER-TOP-COLOR: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; BORDER-RIGHT-COLOR: #ece9d8; mso-border-bottom-alt: solid windowtext .5pt;">12,15 </td></tr></tbody></table></div>表中增量发电量中100,100对应的增量成本10,14有没有错误啊<img title="dvubb" alt="图片点击可在新窗口打开查看" src="http://www.madio.net/bbs/Skins/Default/emot/em06.gif" align="middle" border="0"/></div>请仔细阅读本题 《附录一背景知识介绍及专业术语介绍》

ssddee 发表于 2007-11-23 18:22

B题是求一月份总供水量，还是一月份每天的供水量？数据中的温度显示0是否意味着温度数据未知?

ssddee 发表于 2007-11-23 18:22

B题是求一月份总供水量，还是一月份每天的供水量？数据中的温度显示0是否意味着温度数据未知?

06280227 发表于 2007-11-23 19:42

请问这个表格是什么意思?
 机组初始状态<div align="center"><table cellspacing="0" cellpadding="0" border="1" style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt;"><tbody><tr style="HEIGHT: 11.65pt;"><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 11.65pt; BACKGROUND-COLOR: transparent;">机组</td><td valign="top" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 11.65pt; BACKGROUND-COLOR: transparent;">状态小时数</td><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; HEIGHT: 11.65pt; BACKGROUND-COLOR: transparent;">兆瓦(MW)</td></tr><tr><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">G1</td><td valign="top" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">运行2小时</td><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: #d4d0c8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">100</td></tr><tr><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent;">G2</td><td valign="top" style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent;">关机3小时</td><td valign="top" style="BORDER-RIGHT: #d4d0c8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #d4d0c8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #d4d0c8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent;">0</td></tr></tbody></table></div>

xuminghuiaicww 发表于 2007-11-23 22:06

老师好，我想问你B题中的第三问，水价是不是可以调低啊，如果那样的话不就是鼓励多用水吗？那与问题就又矛盾了啊，为了节约水资源不是吗？

chloe 发表于 2007-11-23 22:54

a题的数据库打不开啊~~ 用excel<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">或者文本编辑器都打不开啊~~

chloe 发表于 2007-11-23 23:02

<?xml version="1.0" encoding="UTF-8"?> <root> <generator name="U1" busIdx="0" Pmin="50.0" Pmax="200.0" rampUp="30.0" rampDown="50.0" initialStatusP="100.0" initialStatusHours="2" MinON="2" MinOFF="1" startupCost="350.0"> <curve timeIdx="0-3" noloadCost="100.0" incrementalQuantity="100,100" incrementalCost="10,14" /> </generator> <generator name="U2" busIdx="1" Pmin="20.0" Pmax="100.0" rampUp="40.0" rampDown="60.0" initialStatusP="0.0" initialStatusHours="-3" MinON="2" MinOFF="1" startupCost="100.0"> <curve timeIdx="0-3" noloadCost="200.0" incrementalQuantity="60,40" incrementalCost="12,15" /> </generator> </root>打开是这样的效果吗？？？是什么意思呀？

88635645 发表于 2007-11-23 23:25

<div align="center"><table class="MsoNormalTable" cellspacing="0" cellpadding="0" border="1" style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-border-top-alt: solid windowtext .5pt; mso-border-bottom-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insidev: .5pt solid windowtext;"><tbody><tr style="mso-yfti-irow: 0; mso-yfti-firstrow: yes;"><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">机组</td><td valign="top" style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt;">启动成本(￥)</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">空载成本(￥)</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">增量发电量(MWh)</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">增量成本(￥/MWh)</td></tr><tr style="mso-yfti-irow: 1;"><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">G1</td><td valign="top" style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt;">350</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">100</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">100,100</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: #ece9d8; BACKGROUND-COLOR: transparent; mso-border-top-alt: solid windowtext .5pt;">10,14</td></tr><tr style="mso-yfti-irow: 2; mso-yfti-lastrow: yes;"><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-bottom-alt: solid windowtext .5pt;">G2</td><td valign="top" style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-bottom-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-right-alt: solid windowtext .5pt;">100</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-bottom-alt: solid windowtext .5pt;">200</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-bottom-alt: solid windowtext .5pt;">60,40</td><td valign="top" style="BORDER-RIGHT: #ece9d8; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-bottom-alt: solid windowtext .5pt;">12,15</td></tr></tbody></table></div>中的60,40对应的12,15不合理啊,这样就没法找到60与40间的界值了啊,数据有误

madio 发表于 2007-11-23 23:50

<div class="msgheader">QUOTE:</div><div class="msgborder">以下是引用ssddee在2007-11-23 18:22:54的发言： B题是求一月份总供水量，还是一月份每天的供水量？数据中的温度显示0是否意味着温度数据未知?</div>要给出计划供水的方案，应该是按天的预测！因为数据就是按天给的！温度的0出题人也不给解释，自己考虑！

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