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A.異常發(fā)熱 B.畫面抖動(dòng) C.異常噪聲 D.散發(fā)異味
A.定期對(duì)視頻線纜進(jìn)行連通性測(cè)試 B.定期對(duì)視頻鏡頭灰塵.蜘蛛絲進(jìn)行清掃 C.定期分析監(jiān)視畫面場(chǎng)景覆蓋情況,及時(shí)調(diào)整視頻點(diǎn)監(jiān)控區(qū)域 D.定期用刷子對(duì)主板.接插件.機(jī)箱及機(jī)箱風(fēng)扇等進(jìn)行除塵