急.一道题目,急急
题目<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">煤炭装卸场的操作方案</span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span lang="EN-US"><p><font face="Times New Roman"></font></p></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">某煤矿公司经营一个大型的煤炭装卸场。每天运煤的火车将装卸场上的煤运往外地。每列标准煤车有三节车厢组成，一个装卸队装满一列煤车要用</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">小时，装卸场的容量相当于</span><span lang="EN-US"><font face="Times New Roman"> 1.5 </font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">列标准煤车的装载量。每天，铁路部门向这个装煤场发送</span><span lang="EN-US"><font face="Times New Roman">3</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">列空煤车。这些煤车可在上午</span><span lang="EN-US"><font face="Times New Roman">5</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">时到下午</span><span lang="EN-US"><font face="Times New Roman">8</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">时的任何时间内到达装卸场。当煤车到达装卸场时，若不能立即装煤，那么煤炭公司需向铁路部门交纳滞留费，每小时每节车厢</span><span lang="EN-US"><font face="Times New Roman">5000</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">美金。此外铁路部门每周四发一列有</span><span lang="EN-US"><font face="Times New Roman">5 </font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">节车厢的高容量煤车，于上午</span><span lang="EN-US"><font face="Times New Roman">11</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">时到下午一时之间到达装卸场，它能装两列标准煤车的煤。从矿井开采的煤被运到装卸场，若场地是完全空的，那么一个装卸队用</span><span lang="EN-US"><font face="Times New Roman">6</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">个小时可以卸满整个装卸场。使用一个装卸队及其相应当装卸设备，每小时得</span><span lang="EN-US"><font face="Times New Roman">9000</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">美金。如果要提高装卸速度，可调用第</span><span lang="EN-US"><font face="Times New Roman">2</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">个装卸队，其费用为每小时</span><span lang="EN-US"><font face="Times New Roman">12000</font></span><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";">美元。在向煤场卸煤时，不能同时往煤车上装煤，由此而中断装煤，延误装车时间也需付滞留费。现在，请你为煤炭公司确定煤场装卸操作的年预算，并考虑如何降低年操作费用。如果煤车可以准时到达，什么样的煤车时刻表最合适。</span></p><span style="FONT-FAMILY: 宋体; mso-hansi-font-family: "Times New Roman"; mso-ascii-font-family: "Times New Roman";"><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><b><span style="FONT-SIZE: 22pt; FONT-FAMILY: 隶书;">煤炭装卸场操作方案</span></b><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 22pt; FONT-FAMILY: 隶书;">的优化设计模型</span></b></p><p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center;"><b style="mso-bidi-font-weight: normal;"><span style="FONT-SIZE: 22pt; FONT-FAMILY: 隶书;">高手帮帮忙忙<span lang="EN-US"><p></p></span></span></b></p></span> 谢谢分享。。。
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