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
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当你面对航向天线,你的左方应该是()
A. 90Hz调制信号占优势
B. 150Hz调制信号占优势
C. 90Hz+150Hz调制信号占优势
D. 90Hz-150Hz调制信号占优势
()对象可以执行【拉长】命令中的【增量】选项。
A. 弧
B. 矩形
C. 圆
D. 圆柱
GSM规范(04.08)中规定了MS采取的接入算法,该算法中涉及下列参数:()
A. 扩展传输时隙数T
B. 最大重发次数
C. 与扩展传输时隙数及信道组合有关的参数S。