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Warning: fclose() expects parameter 1 to be resource, bool given in /www/wwwroot/www.wendadaohang.com/inc/function.php on line 2475 自来水公司装水表用的是一种黑色管,水表处能用白PPR管热熔相接吗,听说黑色管不能相接会被冲脱,烦请教 - 77问答网