The first communication satellite was used for the purpose of（）. -题库考试答案搜索网

The first communication satellite was used for the purpose of（）.

单选题

2022-01-10 08:32

A、taking the place of the radio system
B、introducing a new life-saving system
C、saving the vessels in distress
D、improving the communication on land

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正确答案

D

试题解析

标签： GMDSS

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