Which of the following statements concerning DSC equipment is tr
2023-12-01201到400题
Which of the following statements concerning DSC equipment is true?
A.The GMDSS operator is responsible for proper selecting of HF DSC guard channels.
B.All equipment must be type accepted.
C.The vessel’s navigational position must be updated. either automatically or manually, no less often that every four (4) hours.
D.All of these.
正确答案是D
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