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发表于 2022-7-23 20:23
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来自: 中国上海
The public address system shall be a loudspeaker installation enabling the broadcast or messages into all spaces where crew members or passengers, or both, are normally present, and to muster stations. It shall allow for the broadcast of messages from the navigation bridge and such other places on board the ship as the Administration deems necessary. It shall be installed with regard to acoustically marginal conditions and not require any action from the addressee. It shall be protected against unauthorized use. |
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