出口保险单里的OPEN COVER

出口保险单里的OPEN COVER 打印机里的open the front cover,then replace the toner cartridge w 如何解释保险单里身价这个词 open policy cover note 传真机出现 cover open 我的联想3220一体机提示Back cover open close the back cover.如题 打印机上的 back cover open close the back cover 是什么意思呀 兄弟7010开机滴滴的响、出现Back cover open close the Back cover是怎么回事? Back cover open ciose the Back cover 保险单上的受益人怎么解释 open front cover replace toner 激光打印机显示 cover is open