obeistern
发表于 2007-11-28 23:53:21
楼主是不是发错贴了？这种问题我觉得不适合放在家园，楼主觉得这样的一个题目放在家园，有什么用意？
烟波钓叟
发表于 2007-11-29 10:57:04
LZ怎么不出来发表下意见？
周昶
发表于 2007-12-1 15:17:33
<p>不好意思 最近很忙 一直没有时间来家园 </p><p>其实大家有没有想过?顺流的话应该是船速+水速,逆流的话应该是船速-水速,这一顺一逆,正好是把水的速度抵消了,难道这么多人都没有看出来吗?</p>
sdjyqyf
发表于 2007-12-12 19:30:02
呵呵，看来楼主的确是有点问题
timshawnq
发表于 2008-2-24 15:52:39
<p>看来楼主还是不明白啊。。。</p><p>单纯看速度似乎是楼主说的，可是两个速度行驶的距离相同，时间不同，怎么能用一样的时间算了。。。</p><p>所以，依然3楼正解~~~~~</p>
nagasaki
发表于 2008-3-28 13:51:44
<div class="msgheader">QUOTE:</div><div class="msgborder"><b>以下是引用<i>周昶</i>在2007-10-12 11:03:04的发言：</b><br/><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ''; mso-hansi-font-family: ''; mso-bidi-font-family: ''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">一轮船沿河航行与相距</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: ""; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">48</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ''; mso-hansi-font-family: ''; mso-bidi-font-family: ''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">千米的码头间。往返一次需要</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: ""; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">10</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ''; mso-hansi-font-family: ''; mso-bidi-font-family: ''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">个小时，如果轮船在静水中的速度是</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: ""; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">10</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ''; mso-hansi-font-family: ''; mso-bidi-font-family: ''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">千米每小时，求</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: ""; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"><br/> </span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ''; mso-hansi-font-family: ''; mso-bidi-font-family: ''; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">水流的速度</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: ""; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;"> .</span></p><p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: ""; mso-bidi-font-size: 12.0pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体;">大家都来看看这道题,这是一道初中的数学题,不知道有没有人看出什么毛病.</span></p></div><p>这个题的毛病：论坛在静水中的速度是10km/s，求水流速度。</p><p>都已经在静水中了，为什么还要求水流在速度。</p><p>但是按照算法来说，我同意三楼的</p>