旧笔记本电脑 联想B490，只能dos下刷bios，没有电池，修改bat文件中dosflash 参数行吗？怎样修改？
Usage: DosFlash [COMMAND]

cac                       Check AC power is on.
cbp      threshold        Check battery power in percentage.
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修改:alux FROM 183.228.90.*
FROM 183.228.90.*