汽车罐车油罐固定铅封如需打开铅封或重新铅封的,需()人员在场,现场启封或重封,并更改固定铅封登记表。 ["数质量管理部门","物流部门","承运方","零售中心"]
下列哪种不是直流供电设备()。 ["UPS","整流器","直流变换器","蓄电池"]
汽车罐车油罐施打铅封的部位有()。 ["计量口盖","卸油口盖","卸油阀门","油罐人孔盖"]
汽车罐车油罐施打固定铅封的部位是()。 ["计量口盖","卸油口盖","卸油阀门","油罐人孔盖"]
市电恢复后,发电机延时,冷却停机时间一般设定为:() ["60S","180S~300S","10S","600S"]
用母联断路器并列应如何操作?