釣魚(yú)島（The Diaoyu Islands）自古就是我國(guó)固有領(lǐng)土，又稱釣魚(yú)臺(tái)、釣魚(yú)臺(tái)群島、釣魚(yú)臺(tái)列島，位置在距溫州市約356km、福州市約385km、基隆市約190km．若我國(guó)某海監(jiān)船為維護(hù)我國(guó)對(duì)釣魚(yú)島主權(quán)，從溫州出發(fā)去釣魚(yú)島巡航，到達(dá)釣魚(yú)島時(shí)航行了480km．則下列說(shuō)法中不正確的是（　�。�
分析：位移是矢量，有大小，有方向，可以用由初始位置指向末位置的有向線段表示；路程表示運(yùn)動(dòng)軌跡的長(zhǎng)度，在單向直線運(yùn)動(dòng)中，位移的大小等于路程．
能否看作質(zhì)點(diǎn)物體本身無(wú)關(guān)，要看所研究問(wèn)題的性質(zhì)，看物體的形狀和大小在所研究的問(wèn)題中是否可以忽略．平均速度等于總位移除以總時(shí)間．
解答：解：A、位移是矢初始位置指向末位置的有向線段的長(zhǎng)度，所以位移為356 km，路程表示運(yùn)動(dòng)軌跡的長(zhǎng)度，所以路程為480 km，故A錯(cuò)誤，B正確；
C、該海監(jiān)船在海上航行時(shí)，其大小和形狀對(duì)其位置沒(méi)有影響，所以可以看成質(zhì)點(diǎn)，故C正確；
D、平均速度等于總位移除以總時(shí)間，知道位移和時(shí)間即可求解平均速度，故D正確．
本題選錯(cuò)誤的
故選A
點(diǎn)評(píng)：解決本題的關(guān)鍵理解路程和位移的區(qū)別及聯(lián)系：位移是矢量，有大小，也有方向，可以用由初始位置指向末位置的有向線段表示；路程表示運(yùn)動(dòng)軌跡的長(zhǎng)度，只有大小，沒(méi)有方向．在單向直線運(yùn)動(dòng)中，位移的大小等于路程．
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