不锈钢是指含铬量在（）以上的铁基合金钢。 ["8%","10%","12%","15%"]
What is a benefit of implementing a Cisco End-to-End Solution?（） [" It maximizes the network security"," It increase the cost of the equipment"," It enables the network to work as a unified whole"," It reduces the Cost of equipment"]
电流阴极保护系统是直流电源向被保护体输送（）极电流，使之极极化并达到一定的保护电位，从而达到阴极保护目的。 ["阴","阳","都有可能"]
应急响应的第一步是（）。 ["接警与通知","指挥与控制","警报和紧急公告"]
支付结算业务是由业商银行贷款业务派生出来的。
电压型漏电保护装置的继电器接地与被保护设备的重复接地或与保护接地为什么要分开？
