钓鱼岛自古就是我国固有领土.它的位置距温州市约356km.福州市约385 km.基隆市约190 km.若我国某海监船为维护我国对钓鱼岛主权.从温州出发去钓鱼岛巡航.到达钓鱼岛时航行了480 km.则下列说法中不正确的是( )A．该海监船位移的大小是480 km.路程356 kmB．该海监船位移的大小是356 km.路程480 kmC．该海监船在题目和参考答案——青夏教育精英家教网—

题目内容

钓鱼岛(The Diaoyu Islands)自古就是我国固有领土，它的位置距温州市约356km、福州市约385 km、基隆市约190 km。若我国某海监船为维护我国对钓鱼岛主权，从温州出发去钓鱼岛巡航，到达钓鱼岛时航行了480 km。则下列说法中不正确的是（）

A．该海监船位移的大小是480 km，路程356 km

B．该海监船位移的大小是356 km，路程480 km

C．该海监船在海上航行时，确定其位置时可以将该海监船看成质点

D．若知道此次航行时间可求出此次航行的近似平均速度

试题分析：根据位移和路程的概念可知，该海监船位移的大小是356 km，路程480 km；该海监船在海上航行时，确定其位置时可以将该海监船看成质点；若知道此次航行时间可根据

求出此次航行的近似平均速度，答案选A。

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