我国安全环境面临的主要挑战有哪些?
参考答案:
(1)祖国统一面临严峻形势
(2)海洋权益存在复杂纠纷
(3)边界争端尚未全部解决
(4)少数分裂势力影响边疆安全稳定
被称为花中二绝的是牡丹和______。
What is the basic concept of GMDSS? ()
A.Search and rescue authorities ashore can be alerted to a distress situation
B.Shipping in the immediate vicinity of a ship in distress will be rapidly alerted
C.Shoreside authorities and vessels can assist in a coordinated SAR operation with minimum delay
D.All of the above