• 2021-04-14
    图示二级调压回路系统负载无穷大,先导式溢流阀1的调整压力为5MPa,远程调压阀5的调整压力为2MPa。当电磁换向阀4的电磁铁通电时,系统的压力为:http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/592bf6088e2a4b8eaae67ef4acd42214.png