Unverified80% confidenceDecision RuleTime unknown
报警器重量建议≤50g、可挂载在书包肩带外侧或伸手可及处：藏在书包内层的报警器紧急时来不及取出，等于失效
1
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80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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