Search results for: 'IEC62053-23 (1)'
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- (1) 年滿六十五歲者，每年檢查一次 (2) 四十歲以上未滿六十五歲者，每三年檢查一次 (3) 未滿三十歲者，每七年檢查一次 (4) 未滿四十歲者，每五年檢查一次
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