{ "originalText": "美国空军24日在华盛顿州成功完成波音KC-46A加油机(工程与制造第2阶段)首次空中加油试验,开启了空中加油演示验证的里程碑C阶段?作为开发的一部分,试验小组完成了一系列试验,然后在波音机场为时5小时45分钟的出行架次中向1架飞行高度为6千米的F-16战斗机输送了726千克燃油?此外,加油机还部署了吊杆,伸缩管向外探出,伸向配备插孔的受油机?", "entities": [ { "label_type": "试验要素", "overlap": 0, "start_pos": 17, "end_pos": 27 }, { "label_type": "试验要素", "overlap": 0, "start_pos": 41, "end_pos": 46 }, { "label_type": "试验要素", "overlap": 0, "start_pos": 123, "end_pos": 129 }, { "label_type": "试验要素", "overlap": 0, "start_pos": 138, "end_pos": 139 }, { "label_type": "试验要素", "overlap": 0, "start_pos": 169, "end_pos": 171 }, { "label_type": "性能指标", "overlap": 0, "start_pos": 114, "end_pos": 117 }, { "label_type": "系统组成", "overlap": 0, "start_pos": 151, "end_pos": 152 }, { "label_type": "系统组成", "overlap": 0, "start_pos": 154, "end_pos": 156 }, { "label_type": "系统组成", "overlap": 0, "start_pos": 166, "end_pos": 167 } ] }