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Each life jacket light that has a non-replaceable ...
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Each life jacket light that has a non-replaceable power source must be replaced（）.

发布日期：2021-03-22

A.every 6 months after initial installation

B.every 12 months after initial installation

C.every 24 months after initial installation

D.on or before the expiration date of the power source

标签： life jacket light non-replaceable power
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