【매일 주제】【토목판 20160617】
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참여 보상: 2재산.정답에 대한 보상: 9재산판단: 비계를 해체할 때는 “먼저 묶은 것부터 풀고, 나중에 묶은 것을 먼저 푼다”는 원칙에 따라, 위에서 아래로 순차적으로 해체해야 합니다.( )
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