Every radio installation shall be clearly marked with the（）, the ship station identity and other codes as applicable for the use of the radio installation.<br>A:call sign<br>B:port of register<br>C:radio name<br>D:signal label

Every radio installation shall be clearly marked with the（）, the ship station identity and other codes as applicable for the use of the radio installation.
A:call sign
B:port of register
C:radio name
D:signal label

出自：海船船员证

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