ZXCTN产品紧急故障处理中，以第一时间恢复业务为原则，如果有备用光缆或者路由，先将业务调到备用光缆或者路由上。During ZXCTN product emergency fault handling, make sure to follow the rule of "restore services in the first place". If there is a spare optical cable or route, switch the services to it.
（A）对
（B）错
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