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1·Q: When and where will the negotiations between China and the US on the question of a US surveillance plane ramming into and destroying a Chinese military aircraft take place?

问：中美双方关于美军侦察机撞毁我军用飞机事件的谈判将于何时、何地举行？

2·A great deal of cheap sensors may be deployed thickly by plane or shell to collect useful data in surveillance regions where cannot be arrived convenience, such as enemy position.

通过飞机撒播、特种炮弹发射等手段，可以将大量便宜的传感器密集地部署于己方人员不便于到达的观察区域，如敌方阵地内，以收集到有价值的数据；