Unverified80% confidenceDecision RuleTime unknown
门用防盗安全链条(限位链)安装高度应设在成人视线偏上约1.5-1.6m处,既能开门缝观察来访者,又超出儿童单独操作范围,防止儿童独自开门
1
Sources
80%
Confidence
Long-term
Relevance
-
First Seen
Sources
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