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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 我想用两个时间继电器A,B。控制两个电磁阀a,b。a打开b关闭,做交替的循环工作。最好有图。 - 88问答网