简述雷电冲击试验时波前时间和半峰值时间和哪些参数有关?
多雷达跟踪处理中“马赛克”方法,就是把各种控制空域分成许多(),对落入其区域的目标点迹进行跟踪,这有利于简化点迹-航迹互联过程。
A. 分类空间
B. 分类网络
C. 分类圆圈
D. 分类高度层
Unless otherwise agreed,()must take the goods from alongside,though this obligation may be varied by a custom of the port which is not inconsistent with the express terms of the contract.
A. the consignee
B. the consignor
C. the owner
D. the Charterer