The hydrostatic release on the inflatable liferafts on a fishing vessel must be（）.<br>A:replaced annually<br>B:tested monthly<br>C:serviced annually<br>D:overhauled quarterly

The hydrostatic release on the inflatable liferafts on a fishing vessel must be（）.
A:replaced annually
B:tested monthly
C:serviced annually
D:overhauled quarterly

出自：海船船员证

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