1. 흙막이 굴착공사의 안전관리에 대한 설명으로 옳지 않은 것은?
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[]
[707800,707801,707802,707803,707804,707805,707806,707807,707808,707809]
{"707800":[1,2,3,4],"707801":[1,2,3,4],"707802":[1,2,3,4],"707803":[1,2,3,4],"707804":[1,2,3,4],"707805":[1,2,3,4],"707806":[1,2,3,4],"707807":[1,2,3,4],"707808":[1,2,3,4],"707809":[1,2,3,4]}
exam
127397021