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放喷管线出口距井口的距离应不小于（）。含硫油气井放喷管线出口距井口的距离应不小于（），距各种设施应不小于50m。转弯处应用角度不小于120˚的预制铸（锻）钢弯头。
A . A、50m；25m
B . B、100m；75m
C . C、75m；100m
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