釣魚島（The Diaoyu Islands）自古就是我國固有領(lǐng)土，它到溫州市直線距離為356km，若某天我國海監(jiān)船為維護(hù)我國對(duì)釣魚島主權(quán)，早上8：00從溫州出發(fā)去釣魚島巡航，航行了480km，歷時(shí)8時(shí)20分到達(dá)釣魚島，下列說法中正確的是（　�。�
A．8：00是指時(shí)間間隔
B．8時(shí)20分是指時(shí)刻
C．改海監(jiān)船位移大小為356km，路程為480km
D．由于海監(jiān)船比較大，所以不可能將它看成質(zhì)點(diǎn)

A、8：00出發(fā)，指的是一個(gè)時(shí)間點(diǎn)，因此為時(shí)刻，故A錯(cuò)誤；
B、歷時(shí)8時(shí)20分，用了一段時(shí)間，為時(shí)間間隔，故B錯(cuò)誤；
C、位移是從初位置到末位置的有向線段，為356km；路程為軌跡的實(shí)際長度，為480km，故C正確；
D、該海監(jiān)船在海上航行時(shí)，確定位置時(shí)其大小可以忽略不計(jì)，故可以將該海監(jiān)船看成質(zhì)點(diǎn)，故D錯(cuò)誤．
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